Type Of model Inheritance in odoo:
Inheritance by extension:
from odoo import models, fields, api
class ParentModel(models.Model):
_name = ‘parent.model’
name = fields.Char()
age = fields.Integer()
@api.multi
def do_something(self):
# some functionality
pass
class ChildModel(models.Model):
_name = ‘child.model’
_inherit = ‘parent.model’
email = fields.Char()
@api.multi
def do_something(self):
# overriding parent method
pass
In this example, the ChildModel inherits from the ParentModel using the _inherit attribute. The child model also adds a new field email and overrides the do_something method of the parent model.
Inheritance by delegation:
from odoo import models, fields, api
class ParentModel(models.Model):
_name = ‘parent.model’
name = fields.Char()
age = fields.Integer()
@api.multi
def do_something(self):
# some functionality
pass
class ChildModel(models.Model):
_name = ‘child.model’
parent_id = fields.Many2one(‘parent.model’)
email = fields.Char()
@api.multi
def do_something(self):
# some functionality delegated to parent model
self.parent_id.do_something()
pass
In this example, the ChildModel does not inherit from the ParentModel. Instead, it creates a Many2one field parent_id to delegate some of its functionality to the ParentModel. The child model also adds a new field email and overrides the do_something method to delegate some functionality to the parent model.
Inheritance by prototype:
from odoo import models, fields, api
class ParentModel(models.Model):
_name = ‘parent.model’
name = fields.Char()
age = fields.Integer()
@api.multi
def do_something(self):
# some functionality
pass
class ChildModel(models.Model):
_name = ‘child.model’
_inherits = {‘parent.model’: ‘parent_id’}
parent_id = fields.Many2one(‘parent.model’)
email = fields.Char()
@api.multi
def do_something(self):
# overriding parent method
pass
In this example, the ChildModel inherits from the ParentModel using the _inherits attribute to create a copy of the ParentModel. The child model also adds a new field email and overrides the do_something method of the parent model.
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