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Closes #575: Allow all valid URL schemes in custom fields
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@ -4,6 +4,7 @@ import re
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from django import forms
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from django.core.urlresolvers import reverse_lazy
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from django.core.validators import URLValidator
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from django.utils.encoding import force_text
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from django.utils.html import format_html
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from django.utils.safestring import mark_safe
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@ -253,6 +254,21 @@ class FilterChoiceField(forms.ModelMultipleChoiceField):
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choices = property(_get_choices, forms.ChoiceField._set_choices)
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class LaxURLField(forms.URLField):
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"""
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Custom URLField which allows any valid URL scheme
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"""
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class AnyURLScheme(object):
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# A fake URL list which "contains" all scheme names abiding by the syntax defined in RFC 3986 section 3.1
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def __contains__(self, item):
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if not item or not re.match('^[a-z][0-9a-z+\-.]*$', item.lower()):
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return False
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return True
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default_validators = [URLValidator(schemes=AnyURLScheme())]
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#
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# Forms
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#
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