1461: Этап №5: Фильтрация событий

events/forms.py

@@ -27,8 +27,36 @@ from events.common import MEMBERS, VISITORS, PRICE
 from events.common import members_mapping, visitors_mapping, price_mapping
 
 
+class FilterCheckboxSelectMultiple(forms.CheckboxSelectMultiple):
+    def render(self, name, value, attrs=None, choices=()):
+        if value is None: value = []
+        has_id = attrs and 'id' in attrs
+        final_attrs = self.build_attrs(attrs, name=name)
+        output = ['<ul>']
+        # Normalize to strings
+        str_values = set([force_text(v) for v in value])
+        for i, (option_value, option_label) in enumerate(chain(self.choices, choices)):
+            # If an ID attribute was given, add a numeric index as a suffix,
+            # so that the checkboxes don't all have the same ID attribute.
+            if has_id:
+                final_attrs = dict(final_attrs, id='%s_%s' % (attrs['id'], i))
+                label_for = format_html(u' for="{0}"', final_attrs['id'])
+            else:
+                label_for = ''
+
+            cb = forms.CheckboxInput(final_attrs, check_test=lambda value: value in str_values)
+            option_value = force_text(option_value)
+            rendered_cb = cb.render(name, option_value)
+            option_label = force_text(option_label)
+            output.append(format_html(u'<li>{1}<label{0}>{2}</label></li>',
+                                      label_for, rendered_cb, option_label))
+        output.append(u'</ul>')
+        return mark_safe('\n'.join(output))
+
+
 class CountModelMultipleChoiceField(forms.ModelMultipleChoiceField):
-    widget = forms.CheckboxSelectMultiple
+    # widget = forms.CheckboxSelectMultiple
+    widget = FilterCheckboxSelectMultiple
     def label_from_instance(self, obj):
         if obj.get('count', None) is None:
             return smart_text(obj.get('name'))
@@ -62,6 +90,14 @@ class CountModelMultipleChoiceField(forms.ModelMultipleChoiceField):
         self.run_validators(value)
         return pks
 
+    def widget_attrs(self, widget):
+        """
+        Given a Widget instance (*not* a Widget class), returns a dictionary of
+        any HTML attributes that should be added to the Widget, based on this
+        Field.
+        """
+        return {'class': 'default'}
+
 
 fields_mapping = {
     'members': 'members_choice',
@@ -87,7 +123,7 @@ class FilterForm(forms.Form):
     # PRICE = PRICE
     model = forms.TypedMultipleChoiceField(
         label=_(u'Тип события'), coerce=int,
-        choices=TYPES, required=False, widget=forms.CheckboxSelectMultiple())
+        choices=TYPES, required=False, widget=FilterCheckboxSelectMultiple())
     theme = CountModelMultipleChoiceField(
         label=_(u'Тематики'), required=False,
         queryset=Theme.objects.language().values('pk', 'name'))
@@ -103,16 +139,16 @@ class FilterForm(forms.Form):
     price = forms.TypedMultipleChoiceField(
         label=_(u'Стоимость'), coerce=int,
         choices=PRICE,
-        required=False, widget=forms.CheckboxSelectMultiple(),
+        required=False, widget=FilterCheckboxSelectMultiple(),
         help_text=_(u'За 1 м<sub>2</sub> необорудованной площади'))
     members = forms.TypedMultipleChoiceField(
         label=_(u'Участники'), coerce=int,
         choices=MEMBERS,
-        required=False, widget=forms.CheckboxSelectMultiple())
+        required=False, widget=FilterCheckboxSelectMultiple())
     visitors = forms.TypedMultipleChoiceField(
         label=_(u'Посетители'), coerce=int,
         choices=VISITORS,
-        required=False, widget=forms.CheckboxSelectMultiple())
+        required=False, widget=FilterCheckboxSelectMultiple())
 
     def __init__(self, *args, **kwargs):
         super(FilterForm, self).__init__(*args, **kwargs)

templates/client/includes/events/filter_form.html

@@ -6,9 +6,9 @@
     {% for field in form %}
       {% if field.errors %}error{% endif %}
         <label for="{{ field.auto_id }}">{{ field.label }}</label>
+        {{ field.help_text|safe }}
         {{ field }}
-        {{  field.errors }}
-        {{  field.help_text }}
+        {{ field.errors }}
     {% endfor %}
   
   <button type="submit">{% trans "Применить" %}</button>