Form.has_changed()
Use the has_changed() method on your Form when you need to check if the form data has been changed from the initial data.
1 2 3 4 5 6 7 | >>> data = {'subject': 'hello',... 'message': 'Hi there',... 'sender': 'foo@example.com',... 'cc_myself': True}>>> f = ContactForm(data, initial=data)>>> f.has_changed()False |
When the form is submitted, we reconstruct it and provide the original data so that the comparison can be done:
1 2 | >>> f = ContactForm(request.POST, initial=data)>>> f.has_changed() |
has_changed() will be True if the data from request.POST differs from what was provided in initial or False otherwise. The result is computed by calling Field.has_changed() for each field in the form.
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