refactor(apis_entities): this commit refactors the entity list menu

The `entities_list_links` templatetag was replaced by a
`entities_content_types` templatetag which simply returns a list of
ContentType objects for existing entities (everything that inherits from
AbstractEntity). The template then uses this list and the `model_meta`
filter to create the menu items.

apis_core/apis_entities/templatetags/apis_templatetags.py

@@ -1,7 +1,8 @@
 from operator import itemgetter
 from django import template
-from apis_core.utils import caching
 from apis_core.utils.helpers import triple_sidebar
+from django.contrib.contenttypes.models import ContentType
+from apis_core.apis_entities.models import AbstractEntity
 
 register = template.Library()
 
@@ -14,19 +15,24 @@ def url_replace(request, field, value):
     return dict_.urlencode()
 
 
+def is_entity(content_type: ContentType):
+    model_class = content_type.model_class()
+    return model_class is not None and issubclass(model_class, AbstractEntity)
+
+
 @register.simple_tag
-def entities_list_links():
+def entities_content_types():
     """
     Retrieve all models which inherit from AbstractEntity class
     and return their class name and verbose name.
     """
-    entities_classes = caching.get_all_entity_classes() or []
-    entities_links = [
-        (e.__name__.lower(), e._meta.verbose_name.title()) for e in entities_classes
-    ]
-    entities_links.sort(key=itemgetter(1))
-
-    return entities_links
+    entities = list(
+        filter(
+            lambda content_type: is_entity(content_type),
+            ContentType.objects.all(),
+        )
+    )
+    return entities
 
 
 @register.simple_tag(takes_context=True)

apis_core/core/templates/base.html

@@ -101,10 +101,9 @@
                     <div class="dropdown-menu" aria-labelledby="navbarDropdown">
 
                       {% block entities-menu-items %}
-                        {% entities_list_links as entities_links %}
-                        {% for ent in entities_links %}
-                          <a class="dropdown-item"
-                             href="{% url 'apis:apis_entities:generic_entities_list' ent.0 %}">{{ ent.1 }}</a>
+                        {% entities_content_types as entities %}
+                        {% for content_type in entities %}
+                          <a class="dropdown-item" href="{% url 'apis:generic:list' content_type %}">{{ content_type|model_meta:"verbose_name_plural" }}</a>
                         {% endfor %}
                       {% endblock entities-menu-items %}