display warning message when a float value is negative

Question

how to display a warning message when the value of a float field is less than zero?

René Schuster · Accepted Answer

In your Case use an on_change method:

And in your .py file:

def your_onchange_method(cr, uid, ids, float_value, context=None):
res = {}
if float_value < 0:
res['warning'] = {'title': 'Warning Title', 'message': '''Warning Message'''}
res['value'] = {'your_float_field': abs(float_value)}
return res
_columns = {
'your_float_field': field.float('Field Name'),
}

This will display a warning message and set the flo

Jagdish Panchal · Answer

Hi,

Add   _constraints in py file, try below code

def _check_qty(self, cr, uid, ids, context=None):
for order in self.browse(cr, uid, ids, context=context):
if order.your_field < 0:
return False
return True
_constraints = [
(_check_qty, ' your_field cannot be negative !', ['your_field']),
]

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