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I've been doing things like this in the clean method:
if self.cleaned_data['type'].organized_by != self.cleaned_data['organized_by']:
raise forms.ValidationError('The type and organization do not match.')
if self.cleaned_data['start'] > self.cleaned_data['end']:
raise forms.ValidationError('The start date cannot be later than the end date.')
But then that means that the form can only raise one of these errors at a time. Is there a way for the form to raise both of these errors?
EDIT #1: Any solutions for the above are great, but would love something that would also work in a scenario like:
if self.cleaned_data['type'].organized_by != self.cleaned_data['organized_by']:
raise forms.ValidationError('The type and organization do not match.')
if self.cleaned_data['start'] > self.cleaned_data['end']:
raise forms.ValidationError('The start date cannot be later than the end date.')
super(FooAddForm, self).clean()
Where FooAddForm is a ModelForm and has unique constraints that might also cause errors. If anyone knows of something like that, that would be great...
602
The clean() method on a Field subclass is responsible for running to_python() , validate() , and run_validators() in the correct order and propagating their errors. If, at any time, any of the methods raise ValidationError , the validation stops and that error is raised.
If yes try to disable this behavior, set the novalidate attribute on the form tag As <form action="{% url 'new_page' %}", method="POST" novalidate> in your html file. At you model, the setting title/content = CharField(null=True, blank=True) doesn´t work? At your model-form have you tried setting title/content = forms.
The is_valid() method is used to perform validation for each field of the form, it is defined in Django Form class. It returns True if data is valid and place all data into a cleaned_data attribute. Let's see an example that takes user input and validate input as well.
clean_fields() method documentation: This method will validate all fields on your model. The optional exclude argument lets you provide a list of field names to exclude from validation. It will raise a ValidationError if any fields fail validation.
From the docs:
https://docs.djangoproject.com/en/1.7/ref/forms/validation/#cleaning-and-validating-fields-that-depend-on-each-other
from django.forms.util import ErrorList
def clean(self):
if self.cleaned_data['type'].organized_by != self.cleaned_data['organized_by']:
msg = 'The type and organization do not match.'
self._errors['type'] = ErrorList([msg])
del self.cleaned_data['type']
if self.cleaned_data['start'] > self.cleaned_data['end']:
msg = 'The start date cannot be later than the end date.'
self._errors['start'] = ErrorList([msg])
del self.cleaned_data['start']
return self.cleaned_data
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