django-orchestra-test/orchestra/forms/fields.py

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from django import forms
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from .widgets import SpanWidget
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class MultiSelectFormField(forms.MultipleChoiceField):
""" http://djangosnippets.org/snippets/1200/ """
widget = forms.CheckboxSelectMultiple
def __init__(self, *args, **kwargs):
self.max_choices = kwargs.pop('max_choices', 0)
super(MultiSelectFormField, self).__init__(*args, **kwargs)
def clean(self, value):
if not value and self.required:
raise forms.ValidationError(self.error_messages['required'])
return value
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class SpanField(forms.Field):
"""
A field which renders a value wrapped in a <span> tag.
Requires use of specific form support. (see ReadonlyForm or ReadonlyModelForm)
"""
def __init__(self, *args, **kwargs):
kwargs['widget'] = kwargs.get('widget', SpanWidget)
super(SpanField, self).__init__(*args, **kwargs)