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31 lines
1,020 B
Python
31 lines
1,020 B
Python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from django import forms
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from django.forms.util import flatatt
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from django.utils.safestring import mark_safe
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from django.utils.encoding import force_unicode
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class ValueHiddenInput(forms.HiddenInput):
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"""
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Widget that renders only if it has a value.
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Used to remove unused fields from PayPal buttons.
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"""
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def render(self, name, value, attrs=None):
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if value is None:
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return u''
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else:
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return super(ValueHiddenInput, self).render(name, value, attrs)
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class ReservedValueHiddenInput(ValueHiddenInput):
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"""
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Overrides the default name attribute of the form.
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Used for the PayPal `return` field.
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"""
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def render(self, name, value, attrs=None):
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if value is None:
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value = ''
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final_attrs = self.build_attrs(attrs, type=self.input_type)
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if value != '':
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final_attrs['value'] = force_unicode(value)
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return mark_safe(u'<input%s />' % flatatt(final_attrs))
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