feat: changelist before after templates (#776)

Author: lukasvinclav

src/unfold/admin.py

@@ -235,6 +235,8 @@ class ModelAdmin(ModelAdminMixin, BaseModelAdmin):
     list_filter_submit = False
     list_fullwidth = False
     list_disable_select_all = False
+    list_before_template = None
+    list_after_template = None
     change_form_before_template = None
     change_form_after_template = None
     compressed_fields = False

src/unfold/templates/admin/change_list.html

@@ -69,6 +69,10 @@
                     {% endif %}
                 {% endblock %}
 
+                {% if cl.model_admin.list_before_template %}
+                    {% include cl.model_admin.list_before_template %}
+                {% endif %}
+
                 <form id="changelist-form" method="post"{% if cl.formset and cl.formset.is_multipart %} enctype="multipart/form-data"{% endif %} novalidate>
                     {% csrf_token %}
 
@@ -109,6 +113,10 @@
                     {% endblock %}
                 </form>
 
+                {% if cl.model_admin.list_after_template %}
+                    {% include cl.model_admin.list_after_template %}
+                {% endif %}
+
                 {% if cl.has_filters %}
                     {% include "unfold/change_list_filter.html" %}
                 {% endif %}