Learn: Overriding Write Method in Odoo 8

Greetings everyone, in this blog-post, you will learn how to override write method in Odoo 8.

The write method for a particular model can be called by clicking the ‘Edit’ & followed by ‘Save’ button in the view of that model.

Here i have overridden the write method of res.users model. You can override the write method of any model in similar way in Odoo 8.

You can overrride the write method for a particular model by,

class res_users(models.Model):
    _inherit ='res.users'

    @api.multi
    def write(self,vals):
        print 'Fields and the values to be updated/written--',vals
        #Write your logic here
        res = super(res_users, self).write(vals)
        #Write your logic here
        return res

class res_users(models.Model):

_inherit ='res.users'

@api.multi

def write(self,vals):

print 'Fields and the values to be updated/written--',vals

#Write your logic here

res = super(res_users, self).write(vals)

#Write your logic here

return res

You need to give the class name in the super method. For eg here:- res_users

Use of Write Method in Odoo:

Write method executes an SQL update query on the records.
The values of the field that are going to be wrriten can be found in the vals dictionary, which is the parameter to the method.
The values can be extracted form the dictionary and can be checked against a criteria and a Warning can be raised if its fails to do so.
The vals dictionary can be modified as per the requirement before calling the super method.
The vals will be a blank dictionary if no field is changed.
If you need to call write method again inside the write method, you need to call super method twice.

Here is a snapshot form eclipse IDE:-

Hope you got an insight and understanding of the ORM write method in Odoo 8 and the way of overriding it.

Please Comment below if you have any doubts,

Thank you.

Burhan Vakharia

Myself, Burhan Vakharia, am an Odoo developer, CS Lover living in Gandhinagar, Gujarat, India. I have a degree in Computer Science and Engineering from Babaria Institute of Technology. I am currently working as Odoo Developer. Apart from Odoo Framework, I have worked on C# .Net and Android Platforms. You can contact me via my social profiles shown below.

Post Author: Burhan Vakharia

4 thoughts on “Learn: Overriding Write Method in Odoo 8”

parth06007

(November 27, 2015 - 1:27 pm)

nice tutorial…good start

pav19892

(December 3, 2015 - 6:32 pm)

Thanks for guide me it is awesome work I wish you could go further and please share with us more information

abdessamed

(March 17, 2016 - 1:21 pm)

Hi,
Why you used : @api.multi
Thanx

Burhan Vakharia

(April 8, 2016 - 9:40 am)

@api.multi is for multiple records, where you can loop through it. In Odoo v7 the write method has a parameter called ‘ids’, where a list is passed. In odoo v8, this parameter is decorated with the decorator @api.multi. So now you don’t need to pass ids. You can get the list of ids in v8 by printing ‘self._ids’.