Odoo Help


[Odoo 8]How to use ref on domain xml

on 7/9/15, 12:08 AM 2,896 views


I want to use ref on domain field

<field name="domain">[('carrier_id','=',%(fbv_vexpress.carrier_vexpress)d)</field>

but it don't work

Uncaught Error: % undefined as prefix 

How to fix it?


Hi Tazan,

Reason : In your code you have not written your domain inside "double quote". Thats why you got an error " % undefined as prefix " 

Solution :

You can use %(xxx)d inside domain. But you need to use as like below.

1) If you are giving domain inside any field definition then you need to define domain as like below.

<field name="M2O_field" domain="[('carrier_id','=',%(fbv_vexpress.carrier_vexpress)d )]" />

2) If you inherit any view and add just domain attribute then you need to define domain as like below.

<field name "M2O_field" position="attributes">
    <attribute name="domain">"[('carrier_id','=',%(fbv_vexpress.carrier_vexpress)d )]"</attribute>

I hope you are getting what exactly I want to explain. So, in your case (2) is applicable.


Nice 1, I have one question when we use attribute than need to double quote?

Solanki Shamji
on 7/9/15, 7:51 AM

Thanks for this. I had this problem.

To people having this problem, make sure you don't quote the groupname (fbv_vexpress.carrier_vexpress in this example).

Cats&Dogs bvba, SonnyV
on 10/19/17, 5:18 AM
On 7/9/15, 2:59 AM


I don't think it work! Because '%(fbv_vexpress.carrier_vexpress)d' is string, not a ref

I want to get id record carrier_vexpress on module fbv_vexpress



You may go by an option called search within the field!

<field name="NAME' search="[('model','=','model'),('name','=','your name')]"/>

Its understood that its a DATA, so you may proceed with this check. Also try by ref(XML) too.


Haven't tried the search function, but can confirm that ref(XML) does not work (in python file ref throws an error saying it is not defined.) (in xml it throws an error when oyu try to access the field with the message ref is not defined)

Cats&Dogs bvba, SonnyV
on 10/19/17, 5:19 AM
Axel Mendoza
On 7/10/15, 2:14 AM

Also you could define a function field in your target model that search for the needed id and then use it like this:


<field name="carrier_vexpress" invisible="1"/>

<field name="target_field_id" domain="[('carrier_id','=', carrier_vexpress)]" />


Solanki Shamji
On 7/9/15, 2:53 AM

Please try this




About This Community

This platform is for beginners and experts willing to share their Odoo knowledge. It's not a forum to discuss ideas, but a knowledge base of questions and their answers.


Odoo Training Center

Access to our E-learning platform and experience all Odoo Apps through learning videos, exercises and Quizz.

Test it now

Question tools

2 follower(s)


Asked: 7/9/15, 12:08 AM
Seen: 2896 times
Last updated: 7/10/15, 2:14 AM