Add DateRangeQuickSelectListFilter, which is a mix of admin.DateField…

…ListFilter and DateRangeFilter

rangefilter/filters.py

@@ -403,3 +403,39 @@ def NumericRangeFilterBuilder(title=None, default_start=None, default_end=None):
     )
 
     return filter_cls
+
+
+class DateRangeQuickSelectListFilter(admin.DateFieldListFilter, DateRangeFilter):
+    template = 'rangefilter/date_range_quick_select_list_filter.html'
+
+    def expected_parameters(self):
+        params = [self.lookup_kwarg_gte, self.lookup_kwarg_lte]
+        if self.field.null:
+            params.append(self.lookup_kwarg_isnull)
+        return params
+
+    def _make_query_filter(self, request, validated_data):
+        query_params = super()._make_query_filter(request, validated_data)
+        date_value_gte = validated_data.get(self.lookup_kwarg_gte, None)
+        date_value_lte = validated_data.get(self.lookup_kwarg_lte, None)
+        date_value_isnull = validated_data.get(self.lookup_kwarg_isnull, None)
+
+        if date_value_isnull is not None and not any([date_value_lte, date_value_gte]):
+            query_params[self.lookup_kwarg_isnull] = date_value_isnull
+
+        return query_params
+
+    def _get_form_fields(self):
+        fields = super()._get_form_fields()
+        if self.field.null:
+            fields.update(OrderedDict(
+                (
+                    (self.lookup_kwarg_isnull, forms.BooleanField(
+                        label='',
+                        localize=True,
+                        required=False,
+                        widget=forms.HiddenInput,
+                    )),
+                )
+            ))
+        return fields

rangefilter/templates/rangefilter/date_filter.html

@@ -128,6 +128,7 @@ <h3>{{ title }}</h3>
         }
     });
 </script>
+{% block quick-select-choices %}{% endblock %}
 <div class="admindatefilter">
     <form method="GET" action="." id="{{ choices.0.system_name }}-form">
         {{ spec.form.as_p }}

rangefilter/templates/rangefilter/date_range_quick_select_list_filter.html

@@ -0,0 +1,16 @@
+{% extends 'rangefilter/date_filter.html' %}
+
+{% block quick-select-choices %}
+    {% comment %}
+    The following code under the <ul> tag belongs to admin/filter.html:
+    https://github.com/django/django/blob/stable/2.2.x/django/contrib/admin/templates/admin/filter.html#L3-L8
+    {% endcomment %}
+    <ul>
+        {% for choice in choices %}
+            <li{% if choice.selected %} class="selected"{% endif %}>
+                <a href="{{ choice.query_string|iriencode }}"
+                   title="{{ choice.display }}">{{ choice.display }}</a>
+            </li>
+        {% endfor %}
+    </ul>
+{% endblock %}