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how to define null many2one field ?

Ajeng Shilvie
on 12/20/14, 8:08 AM 1,474 views

i want to put null many2one field in my condition , how should i write ?


def wtc_approval(self, cr, uid, ids,vals, context=None):
        user = self.pool.get("res.users").browse(cr, uid, uid)['groups_id']
        line = self.browse(cr, uid, ids, context=context)
        for x in line.app_line :
            for y in user:
                    if y == x.group_id and x.pelaksana is None :
        return True


so the condition will TRUE if x.pelaksana is null , but i still have a problem , do i have to use x.pelaksana == Null or x.pelaksana is None , or what ??

please help me ...

Ajeng Shilvie
On 12/20/14, 8:19 AM

to Emipro ,

x.pelaksana has a value from res.partner .

what i mean is if i am not yet select any value from x.pelaksana ..

how should i write ?

please help me ....

Ajeng Shilvie
on 12/20/14, 8:23 AM

@ajeng yes that is what I have suggested, if you don't have any value in the "x.pelaksana" then the way I have shown, it will work.. Let me know if I got it right. else we can work it out.

Emipro Technologies Pvt. Ltd.
on 12/20/14, 8:40 AM

@ajeng A suggestion to you, instead of writing as answer, try to go for writing the comment thank you

Emipro Technologies Pvt. Ltd.
on 12/20/14, 8:40 AM

@emipro i don't have enough karma for writing the comment .. then is that nessessary if i use x.pelaksana is not Selected ?

Ajeng Shilvie
on 12/20/14, 10:10 AM

@ajeng did you tried what I suggested? if yes, what is the result?

Emipro Technologies Pvt. Ltd.
on 12/22/14, 5:36 AM

Emipro Technologies Pvt. Ltd.

--Emipro Technologies Pvt. Ltd.--
| 6 7 8
Rajkot, India
--Emipro Technologies Pvt. Ltd.--

Being an emerging leader in IT market since 2011, Emipro Technologies Pvt. Ltd. has been providing a wide range of business solutions in Odoo & Magento. We are pleased to have a large pool of contented customers with our meticulous work in the domain of ERP & e-Commerce. A ray of relief & satisfaction to  our customers heart by our successful deployment in their organization, purely represents our success in Odoo platform. Hence, we take pride for being an Odoo partner with a vision of expanding our strategic alliances with our customers to offer them high value-added, trustworthy & cost effective solutions.


Since establishment, our business has span across 11 countries of the world. Our customers are companies of all sizes ranging from start-ups to large enterprises, who realize that they need a professional business solutions to generate revenue streams, establish proper communication channels or streamline business operations. Standing with strong determination of customer satisfaction, observing each minute detail of their business processes, providing proper guidance and moving forth to develop product accordingly adds our value and reliability among our customers. 


We are blessed with efficient, passionate & eclectic young developers who have come across almost all kinds of business profiles, working with full dedication, applying creativity & new features in existing modules and completing customer's projects successfully on predefined target. Our in-depth knowledge while giving business solutions in Odoo allows us to offer following services to our customers :


  • Consulting
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Emipro Technologies Pvt. Ltd.
On 12/20/14, 8:15 AM


you can just write as

if y == x.group_id and not x.pelaksana:

    <<your code>>

If there will not be any value in "pelaksana" then according to this, your code will be executed.


Hope this helps!!

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Asked: 12/20/14, 8:08 AM
Seen: 1474 times
Last updated: 3/16/15, 8:10 AM