mirror of https://github.com/zulip/zulip.git
52 lines
1.8 KiB
Python
52 lines
1.8 KiB
Python
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# Hack to allow longer-than-72-characters inputs into "username" forms
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#
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# This is needed because we're using the email address as the "username".
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#
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# This code can go away once we switch to Django 1.5 with pluggable
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# user models
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#
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# Adapted from https://gist.github.com/1143957
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from django.conf import settings
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import sys
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USERNAME_MAXLENGTH = getattr(settings, 'USERNAME_MAXLENGTH', 72)
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def hack_forms(length=USERNAME_MAXLENGTH, forms=[
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'django.contrib.auth.forms.UserCreationForm',
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'django.contrib.auth.forms.UserChangeForm',
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'django.contrib.auth.forms.AuthenticationForm',
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]):
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"""
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Hacks username length in django forms.
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"""
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for form in forms:
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modulename, sep, classname = form.rpartition('.')
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if not modulename in sys.modules:
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__import__(modulename)
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module = sys.modules[modulename]
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klass = getattr(module, classname)
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hack_single_form(klass, length)
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def hack_single_form(form_class, length=USERNAME_MAXLENGTH):
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if hasattr(form_class, 'declared_fields'):
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fields = form_class.declared_fields
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elif hasattr(form_class, 'base_fields'):
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fields = form_class.base_fields
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else:
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raise TypeError('Provided object: %s doesnt seem to be a valid Form or '
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'ModelForm class.' % form_class)
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username = fields['username']
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hack_validators(username.validators)
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username.max_length = length
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username.widget.attrs['maxlength'] = length
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def hack_validators(validators, length=USERNAME_MAXLENGTH):
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from django.core.validators import MaxLengthValidator
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for key, validator in enumerate(validators):
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if isinstance(validator, MaxLengthValidator):
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validators.pop(key)
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validators.insert(0, MaxLengthValidator(length))
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hack_forms()
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