how to Validate the length of integer value given in a field ?

Question

i would like to create an integer field which gets the contact number of the customer (Example : 10 digit).. the value enterned in that integer field must be a 10 digit number not more or less than 10digits else it should shown an error message.

Anand · Answer

def _check_length(self, cr, uid, ids, context=None):
for record in self.browse(cr, uid, ids, context=context):
if len(record.contact)=10:
return True
return False

_constraints = [
(_check_length, 'Length must be equal to 10 digit, ['contact']),
]

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