forked from dcramer/django-paypal
/
widgets.py
31 lines (28 loc) · 1020 Bytes
/
widgets.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from django import forms
from django.forms.util import flatatt
from django.utils.safestring import mark_safe
from django.utils.encoding import force_unicode
class ValueHiddenInput(forms.HiddenInput):
"""
Widget that renders only if it has a value.
Used to remove unused fields from PayPal buttons.
"""
def render(self, name, value, attrs=None):
if value is None:
return u''
else:
return super(ValueHiddenInput, self).render(name, value, attrs)
class ReservedValueHiddenInput(ValueHiddenInput):
"""
Overrides the default name attribute of the form.
Used for the PayPal `return` field.
"""
def render(self, name, value, attrs=None):
if value is None:
value = ''
final_attrs = self.build_attrs(attrs, type=self.input_type)
if value != '':
final_attrs['value'] = force_unicode(value)
return mark_safe(u'<input%s />' % flatatt(final_attrs))