{"id":41,"date":"2023-01-03T12:47:00","date_gmt":"2023-01-03T12:47:00","guid":{"rendered":"https:\/\/pythonpower.in\/index.php\/2023\/01\/03\/create-first-web-application-in-django-atom-installation\/"},"modified":"2023-01-03T12:47:00","modified_gmt":"2023-01-03T12:47:00","slug":"create-first-web-application-in-django-atom-installation","status":"publish","type":"post","link":"https:\/\/pythonpower.in\/index.php\/2023\/01\/03\/create-first-web-application-in-django-atom-installation\/","title":{"rendered":"Create First Web Application In Django & Atom Installation"},"content":{"rendered":"
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<\/div>\n

<\/a><\/div>\n<\/p>\n<\/blockquote>\n

<\/div>\n

 <\/p>\n

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How to install django:<\/u>
\n<\/span>1. Make sure Python is already installed in our system
\n<\/span><\/span><\/p>\n

    python –version<\/span><\/span><\/p>\n


\n2. Install django by using pip
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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   pip install django<\/span><\/span><\/p>\n

   pip install django == 1.11.9<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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  C:>pip install django
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  Collecting django
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  Downloading
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  https:\/\/files.pythonhosted.org\/packages\/51\/1a\/6153103322\/Django-2.1-py3-none-
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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 any.whl (7.3MB) 100% || 7.3MB 47kB\/s
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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 Collecting pytz (from django)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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 Downloading https:\/\/files.pythonhosted.org\/packages\/30\/4e\/
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 53b898779a\/pytz-2018.5-py2.py3-none-any.whl (510kB)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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 100% || 512kB 596kB\/s
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 Installing collected packages: pytz, django
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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 Successfully installed django-2.1 pytz-2018.5
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 You are using pip version 9.0.3, however version 18.0 is ava
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 You should consider upgrading via the ‘python -m pip install
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3. To check django version: <\/span><\/span><\/p>\n

   py -m django –version
\n<\/span><\/span><\/p>\n


<\/span><\/p>\n

  etc
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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ATOM IDE\/Editor:
\n<\/span><\/u><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Install ATOM IDE from the following link <\/span>\uf0e0 <\/span>https:\/\/atom.io\/
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Speciality of ATOM IDE:
\n<\/span><\/u><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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.<\/b> It is freeware.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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.<\/b> <\/span>It is open source.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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.<\/b> <\/span>It supports cross platform.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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.<\/b> <\/span>It provides several auto completion short-cuts for easy development etc<\/span><\/span><\/p>\n

<\/p>\n

How To Configure Atom For Python<\/span><\/b><\/p>\n

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1) Terminal Installation:<\/span><\/u><\/span><\/p>\n<\/div>\n<\/div>\n

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File<\/span>\uf0e0<\/span>Settings<\/span>\uf0e0<\/span>Install<\/span>\uf0e0<\/span>In the searchbox just type terminal<\/span>\uf0e0<\/span>platform-ide-
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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terminal
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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2) Python AutoCompletion:
\n<\/span><\/u><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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File<\/span>\uf0e0<\/span>Settings<\/span>\uf0e0<\/span>Install<\/span>\uf0e0<\/span>In the searchbox just type python<\/span>\uf0e0<\/span>autocomplete-python
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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3) django:
\n<\/span><\/u><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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File<\/span>\uf0e0<\/span>Settings<\/span>\uf0e0<\/span>Install<\/span>\uf0e0<\/span>In the searchbox just type django<\/span>\uf0e0<\/span>atom-django
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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4) <\/b>How to Change Terminal from Powershell to Normal Command Prompt:
\n<\/span><\/u><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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File<\/span>\uf0e0<\/span>Settings<\/span>\uf0e0<\/span>Install<\/span>\uf0e0<\/span>In the searchbox just type terminal<\/span>\uf0e0<\/span>platform-ide-
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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terminal<\/span>\uf0e0<\/span>settings<\/span>\uf0e0<\/span>Shell Override<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n

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Django Project Vs Django Application<\/span><\/b><\/p>\n<\/div>\n<\/div>\n

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A Django project is a collection of applications and configurations which forms a full web
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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application.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Eg: Bank Project
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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A Dango Application is responsible to perform a particular task in our entire web
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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application.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Eg: loan app
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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registration app
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

polling app etc<\/span> <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n

                                        <\/span><\/span><\/p>\n

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                                            <\/span><\/p>\n

<\/span><\/a><\/div>\n<\/p>\n
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Project = Several Applications + Configuration Information<\/span><\/span><\/p>\n

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Note:
\n<\/span><\/u><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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1) The Django applications can be plugged into other projects.ie these are reusable.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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(Pluggable Django Applications)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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2) Without existing Django project there is no chance of existing Django Application.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

Before creating any application first we required to <\/span>creating any application first we required to create project.<\/span> <\/span><\/span><\/p>\n<\/p>\n

\n
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<\/p>\n

How To Create Django Project<\/span><\/b><\/p>\n

Once we installed django in our system, we will get ‘django-admin’ command line tool,<\/span><\/p>\n

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which can be used to create our Django project.<\/span><\/span><\/p>\n

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django-admin startproject firstProject<\/span><\/span><\/p>\n


\nD:>mkdir djangoprojects<\/span><\/span><\/p>\n


\nD:>cd djangoprojects
<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

D:djangoprojects>django-admin start-project firstProject <\/span><\/span><\/p>\n

The following project structure will be created<\/span> <\/span><\/span><\/p>\n

D:djangoprojects> <\/span><\/span><\/u><\/b><\/p>\n

| <\/span><\/span><\/p>\n

+—firstProject <\/span><\/b><\/span><\/p>\n

   <\/span>\u00a6 <\/span><\/span><\/p>\n

   <\/span>\u00a6—manage.py <\/span><\/b><\/span><\/p>\n

   <\/span>\u00a6 <\/span><\/span><\/p>\n

  <\/span>+—firstProject <\/span><\/b><\/span><\/p>\n

     <\/span>\u00a6—settings.py <\/span><\/b><\/span><\/p>\n

     <\/span>\u00a6—urls.py <\/span><\/b><\/span><\/p>\n

     <\/span>\u00a6–wsgi.py <\/span><\/b><\/span><\/p>\n

     <\/span>\u00a6– __nit__.py <\/span><\/b><\/span><\/p>\n


<\/span><\/span><\/b><\/p>\n


<\/span><\/span><\/b><\/p>\n

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__init__.py:
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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It is a blank python script.Because of this special file name, Django treated this folder as
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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python package.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Note:<\/b> <\/span>If any folder contains __init__.py <\/b>file then only that folder is treated as Python
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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package.But this rule is applicable until Python 3.9 Version.<\/span><\/span><\/p>\n

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settings.py:
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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 <\/b><\/span>In this file we have to specify all our project settings and and configurations like<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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installed applications, middileware configurations, database configurations etc
\n<\/span><\/span><\/p>\n<\/p>\n

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urls.py: <\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p>\n

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. <\/b>Here we have to store all our url-patterns of our project.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/b>For every view (web page), we have to define separate url-pattern. End user can use
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  url-patterns to access our webpages. <\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p>\n

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wsgi.py:
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/b>wsgi<\/span>\uf0e0<\/span>Web Server Gateway Interface.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/b>We can use this file while deploying our application in production on online server.<\/span><\/span><\/p>\n

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manage.py:
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/b>The most commonly used python script is manage.py
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/b>It is a command line utility to interact with Django project in various ways like to run
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

  development server, run tests, create migrations etc.<\/span> <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

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How To Run Django Development Server<\/span><\/b><\/p>\n<\/p>\n

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We have to move to the manage.py file location and we have to execute the following <\/span>command.<\/span><\/span><\/p>\n

py manage.py runserver<\/span> <\/span><\/span><\/b><\/p>\n<\/div>\n<\/div><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p>\n

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D:djangoprojectsfirstProject>py manage.py startserver<\/span><\/span><\/p>\n

Performing system checks…
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System check identified no issues (0 silenced) <\/span><\/span><\/p>\n<\/p>\n

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You have 13 unapplied migration(s). Your project may not work properly until you apply
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the migrations for app(s): admin, auth, contenttypes, sessions.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Run ‘python manage.py migrate’ to apply them.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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August 03, 2018 – 15:38:59
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Django version 1.11, using settings ‘firstProject.settings’
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Starting development server at http:\/\/127.0.0.1:8000\/
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Quit the server with CTRL-BREAK.<\/span><\/span><\/p>\n

Now the server started.<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

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How to Send First Request:<\/span><\/span><\/p>\n<\/p>\n

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Open browser and send request:
\nhttp:\/\/127.0.0.1:8000\/
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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The following should be response if everything goes fine.
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——————————————————————————
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It worked!
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Congratulations on your first Django-powered page.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Next, start your first app by running python manage.py startapp [app_label].
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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You’re seeing this message because you have DEBUG = True in your Django settings file
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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and you haven’t configured any URLs. Get to work!<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n

Role of Web Server:<\/span> <\/span><\/span><\/p>\n<\/p>\n

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.<\/b> Web Server provides environment to run our web applications.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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.<\/b> <\/span>Web Server is responsible to receive the request and forward request to the
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  corresponding web component based on url-pattern and to provide response to the
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  end user.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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.<\/b>  <\/span>Django framework is responsible to provide development server. Even Django
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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   framework provides one inbuilt database sqlite. Special Thanks to Django.
\n<\/span><\/span><\/p>\n<\/p>\n

\n
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Note:<\/b> <\/span>Once we started Server a special database related file will be generated in our
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
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project folder structure.<\/span><\/span><\/p>\n

db.sqlite3<\/span> <\/span><\/span><\/b><\/p>\n


<\/span><\/span><\/b><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

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Create Of First Web Application<\/span><\/span><\/p>\n

Once we creates Django project, we can create any number of applications in that project.<\/span><\/p>\n

\n
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The following is the command to create application.<\/span><\/span><\/p>\n


\npython manage.py startapp firstApp <\/span><\/span><\/p>\n

D:djangoprojectsfirstProject>python manage.py startapp firstApp <\/span><\/span><\/p>\n

The following is the folder structure got created. <\/span><\/span><\/p>\n

D:djangoprojects> <\/span><\/span><\/b><\/p>\n

\u2514\u2500\u2500\u2500firstProject <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502 db.sqlite3 <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502 manage.py <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502 <\/span><\/span><\/b><\/p>\n

     <\/span>\u251c\u2500\u2500\u2500firstApp <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502    <\/span>\u2502 admin.py <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502    <\/span>\u2502 apps.py <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502    <\/span>\u2502 models.py <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502    <\/span>\u2502 tests.py <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502    <\/span>\u2502 views.py <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502    <\/span>\u2502 __init__.py <\/span><\/span><\/b><\/p>\n

      <\/span>\u2502   <\/span>\u2502 <\/span><\/span><\/b><\/p>\n

     <\/span>\u2502   <\/span>\u2514\u2500\u2500\u2500migrations <\/span><\/span><\/b><\/p>\n

     <\/span>\u2502              <\/span>__init__.py <\/span><\/span><\/b><\/p>\n

     <\/span>\u2502 <\/span><\/span><\/b><\/p>\n

     <\/span>\u2502 <\/span><\/span><\/b><\/p>\n

    <\/span>\u2514\u2500\u2500\u2500firstProject <\/span><\/span><\/b><\/p>\n

         <\/span>\u2502 settings.py <\/span><\/span><\/b><\/p>\n

         <\/span>\u2502 urls.py <\/span><\/span><\/b><\/p>\n

         <\/span>\u2502 wsgi.py <\/span><\/span><\/b><\/p>\n

         <\/span>\u2502 __init__.py <\/span><\/span><\/b><\/p>\n


<\/span><\/span><\/b><\/p>\n

\n

\n
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Note:<\/b> <\/span>Observe that Application contains 6 files and project contains 4 files+ one special
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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            file: manage.py <\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

1) <\/b>__init__.py: <\/span><\/span><\/p>\n

    <\/b><\/span>It is a blank Python script. Because of this special name,Python treated this folder as a  <\/span>package. <\/span><\/span><\/p>\n<\/p>\n

\n
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2) <\/b>admin.py: <\/span><\/span><\/p>\n<\/p>\n

\n
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     We can register our models in this file. Django will use these models with Django’s
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
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      admin interface. <\/span><\/span><\/p>\n<\/p>\n

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3) <\/b>apps.py: <\/span><\/span><\/p>\n<\/p>\n

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     In this file we have to specify application’s specific configurations. <\/span><\/span><\/p>\n<\/p>\n

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4) <\/b>models.py: <\/span><\/span><\/p>\n<\/p>\n

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      In this file we have to store application’s data models. <\/span><\/span><\/p>\n<\/p>\n

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\n

5) <\/b>tests.py: <\/b><\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

     <\/span>In this file we have to specify test functions to test our code. <\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

 6) <\/span>views.py:<\/span><\/span><\/p>\n<\/p>\n

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  In this file we have to save functions that handles requests and return required
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  responses. <\/span><\/span><\/p>\n<\/p>\n

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7) <\/b>Migrations Folder: <\/span><\/span><\/p>\n<\/p>\n

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     This directory stores database specific information related to models. <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

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Activities required for Application: <\/span><\/span><\/p>\n


<\/span><\/u><\/span><\/p>\n

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Activity-1<\/b>: <\/span>Add our application in settings.py,so that Django aware about our <\/span>application.<\/span><\/span><\/p>\n

In <\/span>settings.py:<\/span><\/span><\/b><\/p>\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n\n
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1) <\/span>INSTALLED_APPS=[
\n<\/b><\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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2) <\/span>‘django.contrib.admin’<\/span>,
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3) <\/span>‘django.contrib.auth’<\/span>,
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4) <\/span>‘django.contrib.contenttypes’<\/span>,
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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5) <\/span>‘django.contrib.sessions’<\/span>,
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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6) <\/span>‘django.contrib.messages’<\/span>,
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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7) <\/span>‘django.contrib.staticfiles’<\/span>,
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8) <\/span>‘firstApp’
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9) <\/span>]
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Activity-2:<\/b> <\/span>Create a view for our application in views.py.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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.<\/b> View is responsible to prepare required response to the end user. i.e view contains<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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  business logic.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/span>There are 2 types of views.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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     1). Function Based Views<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

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      2) . Class Based Views
\n<\/span><\/span><\/p>\n

.<\/b> <\/span>In this application we are using Function based views. <\/span><\/span><\/p>\n

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views.py: <\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/div><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n
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1) <\/span>from <\/span>django .shortcuts <\/span>import <\/span>render
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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2) <\/span>from <\/span>django .http<\/span>i mport <\/span>HttpResponse
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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3) <\/span>#Create your view shere.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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4) <\/span>def <\/span>display(request):
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5) <\/span>s = <\/span>‘<h1>Hello Students welcome to PythonPower Django classes!!!<\/h1>’
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6) <\/span>return <\/span>HttpResponse(s)
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Note:
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1) Each view will be specified as one function in views.py.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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2) In the above example display is the name of function which is nothing but one view.
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3) Each view should take atleast one argument (request)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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4) Each view should return HttpResponse object with our required response.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

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<\/span><\/p>\n

                                                       <\/span><\/p>\n

<\/span><\/a><\/div>\n


<\/span><\/p>\n<\/p><\/div>\n

\n


<\/span><\/p>\n<\/div>\n

\n\t\t\t\t<\/div>\n<\/p><\/div>\n
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View can accept request as input and perform required operations and provide proper
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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response to the end user.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Activity-3<\/b>: Define url-pattern for our view in urls.py file.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/b>This url-pattern will be used by end-user to send request for our views.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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. <\/b>The ‘urlpatterns’ list routes URLs to views.
\n<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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For functional views we have to do the following 2 activities<\/b>:
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Add an import: from firstApp import views
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Add a URL to urlpatterns: url(r’^greeting\/’, views.display)
\n<\/span><\/span><\/p>\n<\/p>\n

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urls.py: <\/span><\/u><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n
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1) <\/span>from <\/span>django .conf .urls <\/span>import <\/span>url
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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2) <\/span>from <\/span>django .contrib <\/span>import <\/span>admin
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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3) <\/span>from <\/span>firstApp <\/span>import <\/span>views
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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4)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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5) <\/span>urlpatterns=[
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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6)     <\/span>url(r<\/span>‘^admin\/’<\/span>, admin.site.urls),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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7)     <\/span>url(r<\/span>‘^greetings\/’<\/span>, views.display),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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8) <\/span>]
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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\n

Whenever end user sending the request with urlpattern: greeting then disply() function
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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will be executed and provide required response.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Activity-4:<\/b> <\/span>Start Server and Send the request<\/span><\/span><\/p>\n

                       python manage.py runserver <\/span><\/span><\/p>\n

                        http:\/\/127.0.0.1:8000\/greetings <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

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Http Request flow in Django Application: <\/span><\/span><\/p>\n

<\/p>\n

<\/span><\/a><\/div>\n

<\/span><\/div>\n<\/p>\n
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\n

1. Whenever end user sending the request first Django development server will get that
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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   request.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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2. From the Request django will identify urlpattern and by using urls.py, the
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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    corresponding view will be identified.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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3. The request will be forwared to the view. The corresponding function will be executed
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

    and provide required response to the end user. <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

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\n
\n

Summary of Sequence of Activities related to
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\n

Django Project: <\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

1) <\/span>Creation of Django project<\/span><\/span><\/p>\n

\n
\n

   django-admin startproject firstProject<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

2) <\/span>Creation of Application in that project<\/span><\/span><\/p>\n

\n
\n

    py manage.py startapp firstApp<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

\n
<\/div>\n<\/div>\n

3) <\/span>Add application to the Project<\/span><\/span><\/p>\n

\n
\n

   (inside settings.py)<\/span><\/span><\/p>\n<\/div>\n<\/div>\n

4) <\/span>Define view function inside views.py<\/span><\/span><\/p>\n

5) <\/span>Define url-pattern for our view inside urls.py<\/span><\/span><\/p>\n

6) <\/span>Start Server<\/span><\/span><\/p>\n

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    py manage.py runserver <\/span><\/span><\/p>\n

7) <\/span>Send the request<\/span><\/span><\/div>\n

<\/span><\/span><\/div>\n
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\n

How to change  Django Server Port: <\/span><\/span><\/p>\n

 <\/span><\/span><\/p>\n

\n
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By default Django develoment server will run on port number: 8000. But we can change
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\n

port number based on our requirement as follows.
\n<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
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Now Server running on port number: 7777
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\n

We have to send the request with this port number only
\n<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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http:\/\/127.0.0.1:7777\/greetings\/
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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http:\/\/127.0.0.1:8000\/time\/ <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

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Various Practice Applications:
\n<\/span><\/u><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\n

1. Write Django Application just to send Helloworld message as response.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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2. Write Django application to send server time as response
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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3. Single application with multiple views <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

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views.py:
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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1) <\/span>from <\/span>django. shortcuts <\/span>import <\/span>render
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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2) <\/span>from <\/span>django. http<\/span>import <\/span>Http Response
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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3) <\/span>#Createyourviewshere.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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4) <\/span>def <\/span>good_morning_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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5)       <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Hello Friend Good Morning!!!<\/h1>’<\/span>)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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6) <\/span>def <\/span>good_evening_view(request):
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7)        <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Hello Friend Good Evening !!!<\/h1>’<\/span>)
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<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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8) <\/span>def <\/span>good_afternoon_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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9)        <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Hello Friend Good Afternoon!!!<\/h1>’<\/span>)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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urls.py
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n
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1) <\/span>from <\/span>django .conf .urls <\/span>import <\/span>url
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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2) <\/span>from <\/span>django .contrib <\/span>import <\/span>admin
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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3) <\/span>from <\/span>test app <\/span>import <\/span>views
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<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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4) <\/span>urlpatterns=[
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5) <\/span>url(r<\/span>‘^admin\/’<\/span>, admin.site.urls),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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6) <\/span>url(r<\/span>‘^morning\/’<\/span>, views.good_morning_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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7) <\/span>url(r<\/span>‘^afternoon\/’<\/span>, views.good_afternoon_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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8) <\/span>url(r<\/span>‘^evening\/’<\/span>, views.good_evening_view),<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n

 <\/span>. <\/span>Single project with multiple applications:<\/span><\/span><\/u><\/b><\/p>\n<\/p>\n

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greetingapp: views.py
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n
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1) <\/span>from <\/span>django .shortcuts <\/span>import <\/span>render
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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2) <\/span>from <\/span>django .http <\/span>import <\/span>HttpResponse
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

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3) <\/span>#Create your viewshere.
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4) <\/span>def <\/span>greetings_view(request):
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5) <\/span>#total html code 1000 lines of code
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\n

6)      <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Hello Friends Good Morning…Have a Nice Day<\/h1’<\/span>)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n
\n

timeapp:views.py
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n\n
\n
\n
\n

1) <\/span>from <\/span>django .shortcuts <\/span>import <\/span>render
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>from <\/span>django .http<\/span>i mport <\/span>HttpResponse
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

3) <\/span>import <\/span>datetime
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

4) <\/span>#Create yourv iewshere.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

5) <\/span>def <\/span>time_info_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

6)     <\/span>time= datetime.datetime.now()
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

7)     <\/span>s=<\/span>‘<h1>Hello Current Date and Time is :’<\/span>+str(time)+<\/span>‘<\/h1>’
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

8)     <\/span>return <\/span>HttpResponse(s)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n
\n

Issue with urls.py
\n<\/span><\/b><\/span><\/p>\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n
\n
\n
\n

1) <\/span>from <\/span>greeting app <\/span>import <\/span>views
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>from <\/span>timeapp <\/span>import <\/span>views
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n
\n

Take special care while defining url patterns.we will get error b’z only one views.py is
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

available. But we can solve this problem with any of the following 2 ways
\n<\/span><\/span><\/p>\n

First Approach<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n
\n
\n
\n

1) <\/span>from <\/span>greetingapp .views <\/span>import <\/span>greetings_view
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>from <\/span>timeapp .views <\/span>import <\/span>time_info_view
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

3) <\/span>urlpatterns=[
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

4) <\/span>url(r<\/span>‘^admin\/’<\/span>, admin.site.urls),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

5) <\/span>url(r<\/span>‘^greetings\/’<\/span>,greetings_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

6) <\/span>url(r<\/span>‘^time\/’<\/span>,time_info_view),
\n<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

Second Approach
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n
\n
\n
\n

1) <\/span>from. <\/span>greetingapp <\/span>import <\/span>viewsasv1
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>from <\/span>timeapp <\/span>import <\/span>viewsasv2
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

3) <\/span>urlpatterns=[
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

4) <\/span>url(r<\/span>‘^admin\/’<\/span>, admin.site.urls),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

5) <\/span>url(r<\/span>‘^greetings\/’<\/span>,v1.greetings_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

6) <\/span>url(r<\/span>‘^time\/’<\/span>,v2.time_info_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

 <\/span>]
\n<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

Q. Is it possible to define mutlitple url patterns for the same view function?
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

Answer: Yes, by using the following approach
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n
\n
\n
\n

1) <\/span>urlpatterns=[
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>url(r<\/span>‘^admin\/’<\/span>, admin.site.urls),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

3) <\/span>url(r<\/span>‘^$’<\/span>, views.wish),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

4) <\/span>url(r<\/span>‘^test\/’<\/span>, views.wish)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

 <\/span>]
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n
\n

http:\/\/127.0.0.1:8000\/
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

http:\/\/127.0.0.1:8000\/test <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

Demo Application: <\/span><\/u><\/b><\/span><\/p>\n<\/p>\n

\n
\n
\n

1. Creation of Project
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

    django-admin startproject urlProject <\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

2. Creation of Application
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

   py manage.py startapp testapp <\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

3. Add our application to the Project inside settings.py file<\/span><\/span><\/p>\n

     <\/b><\/span>INSTALLED_APPS=[<\/b><\/span><\/span><\/p>\n

\n
\n
\n

                  ………
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

                ‘testapp’
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

                 ]<\/span> <\/span><\/span><\/b><\/p>\n<\/p>\n

\n
\n
\n

4. Define View Function in views.py <\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n
\n


<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\n
\n
\n
\n
\n

views.py <\/span><\/b><\/span><\/p>\n<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n
\n
\n

1) <\/span>from <\/span>django .shortcuts <\/span>import <\/span>render
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>from <\/span>django .http <\/span>import <\/span>HttpResponse
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

3) <\/span>#Create your views here.
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

4) <\/span>def <\/span>first_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

5) <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Response from First View<\/h1>’<\/span>)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

6) <\/span>def <\/span>second_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

7) <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Response from Second View<\/h1>’<\/span>)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

8) <\/span>def <\/span>third_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

9) <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Response from third View<\/h1>’<\/span>)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

10) <\/span>def <\/span>fourth_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

11) <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Response from Fourth View<\/h1>’<\/span>)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

12) <\/span>def <\/span>fifth_view(request):
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

13) <\/span>return <\/span>HttpResponse(<\/span>‘<h1>Response from Fifth View<\/h1>’<\/span>)
\n<\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

5. Create a seperate urls.py file inside application <\/b><\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\n
\n\t\t\t\t<\/div>\n<\/p><\/div>\n
\n
\n
\n
\n
\n

testapp\/urls.py<\/span><\/b><\/span><\/p>\n

\n\n\n\n\n
\n
\n
\n

1) <\/span>from <\/span>django .conf .urls <\/span>import <\/span>url
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>from <\/span>testapp <\/span>import <\/span>views
\n<\/span><\/span><\/p>\n<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

3) <\/span>urlpatterns=[
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

4) <\/span>url(r<\/span>‘^first\/’<\/span>, views.first_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

5) <\/span>url(r<\/span>‘^second\/’<\/span>, views.second_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

6) <\/span>url(r<\/span>‘^third\/’<\/span>, views.third_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

7) <\/span>url(r<\/span>‘^fourth\/’<\/span>, views.fourth_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

8) <\/span>url(r<\/span>‘^fifth\/’<\/span>, views.fifth_view),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

 <\/span>]
\n<\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

. Include this application level urls.py inside project level urls.py file.
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

. from django.conf.urls. import include <\/span><\/b><\/span><\/p>\n<\/p>\n

\n
\n
\n

project level:urls.py
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n
\n
\n
\n

1) <\/span>from <\/span>django .conf .urls <\/span>import <\/span>url ,include
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

2) <\/span>from <\/span>django .contrib <\/span>import <\/span>admin
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

3) <\/span>urlpatterns=[
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

4) <\/span>url(r<\/span>‘^admin\/’<\/span>, admin.site.urls),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

5) <\/span>url(r<\/span>‘^testapp\/’<\/span>, include(<\/span>‘testapp.urls’<\/span>)),
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n

\n
\n
\n

 <\/span>]
\n<\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

. Run Server
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

py manage.py runserver
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

. Send Request
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

http:\/\/127.0.0.1:8000\/urlApp\/test
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

Note: <\/span>We can see reusability of application in other project just with only 2 lines addition
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

1. settings.py –>add application name
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

2. urls.py —>just add: url(r’^urlApp\/’,include(‘urlApp.urls’), <\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n<\/p>\n

\n
\n
\n

Advantages:
\n<\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

The main advantages of defining urlpatterns at application level instead of project level
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

are
\n1)
\n2)
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

It promotes reusability of Django Applications across multiple projects
\n<\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n

Project level urls.py file will be clean and more readable <\/span><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

 <\/span><\/b><\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<\/div>\n

\n
\n\t\t\t\t<\/div>\n<\/p><\/div>\n
\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

\n
\n


<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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  How to install django: 1. Make sure Python is already installed in our system…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":"","_joinchat":[]},"categories":[7],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/posts\/41"}],"collection":[{"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/comments?post=41"}],"version-history":[{"count":0,"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/posts\/41\/revisions"}],"wp:attachment":[{"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/media?parent=41"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/categories?post=41"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pythonpower.in\/index.php\/wp-json\/wp\/v2\/tags?post=41"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}