apps/search/fields.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from django import forms
   6 from django.forms.widgets import flatatt
   7 from django.utils.encoding import smart_unicode
   8 from django.utils.safestring import mark_safe
   9 from json import dumps
  10
  11
  12 class JQueryAutoCompleteWidget(forms.TextInput):
  13     def __init__(self, options, *args, **kwargs):
  14         self.options = dumps(options)
  15         super(JQueryAutoCompleteWidget, self).__init__(*args, **kwargs)
  16
  17     def render_js(self, field_id, options):
  18         return u'$(\'#%s\').autocomplete(%s).result(autocomplete_result_handler);' % (field_id, options)
  19
  20     def render(self, name, value=None, attrs=None):
  21         final_attrs = self.build_attrs(attrs, name=name)
  22         if value:
  23             final_attrs['value'] = smart_unicode(value)
  24
  25         if not self.attrs.has_key('id'):
  26             final_attrs['id'] = 'id_%s' % name
  27
  28         html = u'''<input type="text" %(attrs)s/>
  29             <script type="text/javascript">//<!--
  30             %(js)s//--></script>
  31             ''' % {
  32                 'attrs': flatatt(final_attrs),
  33                 'js' : self.render_js(final_attrs['id'], self.options),
  34             }
  35
  36         return mark_safe(html)
  37
  38
  39 class JQueryAutoCompleteSearchWidget(JQueryAutoCompleteWidget):
  40     def __init__(self, *args, **kwargs):
  41         super(JQueryAutoCompleteSearchWidget, self).__init__(*args, **kwargs)
  42
  43     def render_js(self, field_id, options):
  44         return u""
  45
  46
  47 class JQueryAutoCompleteField(forms.CharField):
  48     def __init__(self, source, options={}, *args, **kwargs):
  49         if 'widget' not in kwargs:
  50             options['source'] = source
  51             kwargs['widget'] = JQueryAutoCompleteWidget(options)
  52
  53         super(JQueryAutoCompleteField, self).__init__(*args, **kwargs)
  54
  55
  56 class JQueryAutoCompleteSearchField(forms.CharField):
  57     def __init__(self, options={}, *args, **kwargs):
  58         if 'widget' not in kwargs:
  59             kwargs['widget'] = JQueryAutoCompleteSearchWidget(options)
  60
  61         super(JQueryAutoCompleteSearchField, self).__init__(*args, **kwargs)