Skip to Content
This question has been flagged
1 Reply
9606 Views
Avatar
Nissan Pagotaisidro

Hello! Help me on how to constraint a number of characters in a fields.Char? 

and number must be minimum of 12 and maximum of 15 characters

here's my models.py

bir_id = fields.Char(size=15)

def _check_length(self, cr, uid, ids, context=None): 
     for record in self.browse(cr, uid, ids):
         if record.bir_id < 12: 
         return False 
     return True 
_constraints = [(_check_length, 'Error', ['bir_id'])]


when i enter less than 12 characters, there's no error. What do you think is the problem? 

Thank you! 

Avatar
Discard
Avatar
Serpent Consulting Services Pvt. Ltd.
Best Answer

Hi Nissan,

To check the length (number of characters in your string), you should use len(your_string).

Ex:

if len(record.bir_id) < 12 or len(record.bir_id) > 15:
    # raise exception or return False
    return False

Hope this will help you.

Avatar
Discard
Nissan Pagotaisidro
Author

Thank you for fast reply!