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"""hooks/on_validation
on_validation is triggered any time you save. Here you can implement a read
only table...
try changing something and then saving.
"""
from sqlkit.exc import ValidationError
from sqlkit.db.utils import get_differences
class Validation(object):
def on_validation(self, mask):
changed = False
for field_name, old, new in get_differences(mask.current):
print field_name, old, new
changed = True
if changed:
raise ValidationError("I don't want you to change anything!!!")
t = SqlMask(model.Movie, dbproxy=db, hooks=Validation())
t.gui_fields.description.blank = True #don't try to change '' in None
t.reload()
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