feat: pluggable profile tabs

Added ProfileTab class to represent a profile tab and made the profile
page render the tabs specified in the hook `profile_tabs`. This allows
plugging in new tabs in the profile page without makeing any changes to
the community module.

community/community/profile_tab.py

@@ -0,0 +1,38 @@
+"""
+The profile_tab module provides a pluggable way to add tabs to user
+profiles.
+
+This is achieved by specifying the profile_tabs in the hooks.
+
+    profile_tabs = [
+        'myapp.myapp.profile_tabs.SketchesTab'
+    ]
+
+When a profile page is rendered, these classes specified in the
+profile_hooks are instanciated with the user as argument and used to
+render the tabs.
+"""
+
+class ProfileTab:
+    """Base class for profile tabs.
+
+    Every subclass of ProfileTab must implement two methods:
+        - get_title()
+        - render()
+    """
+    def __init__(self, user):
+        self.user = user
+
+    def get_title(self):
+        """Returns the title of the tab.
+
+        Every subclass must implement this.
+        """
+        raise NotImplementedError()
+
+    def render(self):
+        """Renders the contents of the tab as HTML.
+
+        Every subclass must implement this.
+        """
+        raise NotImplementedError()

community/www/profiles/profile.html

@@ -72,29 +72,26 @@
     </div>
     <div>
       <ul class="nav nav-tabs mt-4" id="myTab" role="tablist">
-        <li class="nav-item">
-          <a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home"
-            aria-selected="true">Sketches</a>
-        </li>
+        {% for tab in profile_tabs %}
+          <li class="nav-item">
+            {% set slug = title.lower().replace(" ", "-") %}
+            {% set selected = loop.index == 1 %}
+            {% set active = 'active' if loop.index == 1 else '' %}
+            <a class="nav-link {{ active }}" id="{{ slug }}-tab" data-toggle="tab" href="#{{ slug }}" role="tab" aria-controls="{{ slug }}"
+              aria-selected="{{ selected }}">Sketches</a>
+          </li>
+        {% endfor %}
       </ul>
     </div>
     <div>
-      <div class="tab-content">
-        <div class="tab-pane fade py-4 show active" role="tabpanel" id="home">
-          <div class="row">
-            {% if sketches %}
-            {% for sketch in sketches %}
-            <div class="col-md-4 col-sm-6">
-              {{ widgets.SketchTeaser(sketch=sketch) }}
-            </div>
-            {% endfor %}
-            {% endif %}
+      {% for tab in profile_tabs %}
+        {% set slug = title.lower().replace(" ", "-") %}
+        <div class="tab-content">
+          <div class="tab-pane fade py-4 show active" role="tabpanel" id="slug">
+            {{ tab.render() }}
           </div>
-          {% if not sketches %}
-          <p class="text-center">{{member.full_name}} has not created any skecth yet.</p>
-          {% endif %}
         </div>
-      </div>
+      {% endfor %}
     </div>
   </div>
 </div>

community/www/profiles/profile.py

@@ -3,9 +3,20 @@ from community.lms.models import Sketch
 
 def get_context(context):
     context.no_cache = 1
+
     try:
         context.member = frappe.get_doc("User", {"username": frappe.form_dict["username"]})
     except:
         context.template = "www/404.html"
-    else:
-        context.sketches = Sketch.get_recent_sketches(owner=context.member.email)
+        return
+
+    context.profile_tabs = get_profile_tabs(context.member)
+
+def get_profile_tabs(user):
+    """Returns the enabled ProfileTab objects.
+
+    Each ProfileTab is rendered as a tab on the profile page and the
+    they are specified as profile_tabs hook.
+    """
+    tabs = frappe.get_hooks("profile_tabs") or []
+    return [frappe.get_attr(tab)(user) for tab in tabs]