How can I mark a field "unique" in a custom model?

Question

When I create a custom model in the web GUI, how can I mark a field as "unique", so that the database will never create a second row with the same field value?

Ray Carnes · Accepted Answer

You can only do this when you create your field via Python.

See https://accounts.openerp.com/forum/Help-1/question/16386 [1]

_sql_constraints = [
('field_unique',
'unique(field)',
'Choose another value - it has to be unique!')
]

Note that if there are existing records for the model in the database, then any field values have to be unique, or this will fail and OpenERP will do nothing to enforce the constraint for new records.

[1] https://accounts.openerp.com/forum/Help-1/question/16386

Thierry Godin · Answer

Hi,
add a sql constraint to your model :
_sql_constraints = [
('uniq_name', 'unique(stuff_name)', "A stuff already exists with this name . Stuff's name must be unique!"),
]
Best regards

Prakash Bhadiyatar · Answer

_sql_constraints = [
('uniq_name', 'unique(your_field_name)', "You Entered data is already exists with this name. Please give data must be unique!"),
]

İlgili Gönderiler	Cevaplar	Görünümler
add an existing field to a model field custom state model	1 Mar 15	8885
How to add a "product" field to a project issue? field custom model issue	2 Mar 15	8383
Custom model - avoid deleting values when in use Çözüldü custom model	2 Mar 22	4839
what's the field '_date_name' means in a model field model	0 Mar 24	5791
Field referring to the same model? field custom related model same	3 Haz 17	9056

Bu soru işaretlendi

Tartışma hoşunuza mı gidiyor? Sadece okumakla kalmayın, katılın!