Check that a field not changes after edition

Question

Hello, I have Odoo 8. I am developing a module and I want to override "write" method to check that a special field (for instance: "field_a") not changes after edition. How can I check this?
In the creation the field can assume any value.
Thanks!

Anil Kesariya · Accepted Answer

José,
Here you go!
def write(cr, uid, ids, vals, context=None):
if not vals.has_key(''field_a):
print "Your Field A is not updated..."
res =  super(class_name, self).write(cr, uid, ids, vals, context=context)
return res
This might helps you!

Regards,
Anil.

Ajeng Shilvie · Answer

try this ;
def write(self,cr,uid,ids,vals,context=None):
*     if vals.get('field_a',False):*
*               ##### if pass the condition means that 'field_a' has been updated
*
return super(your_class_name, self).write(cr, uid, ids, vals, context=context)

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