Don't allow more members than on the plan.

teams/templates/teams/team-members.html

@@ -30,6 +30,12 @@
         </ul>
       </aside>
       <section class="content">
+        {% if 'limit-reached' in request.GET %}
+          <p class="alert alert-error group">
+            You have no seats available to add this member.
+            To upgrade your plan, contact <a href="mailto:support@snipt.net">support@snipt.net</a>.
+          </p>
+        {% endif %}
         <div class="def" data-title="Owner">
           {{ team.owner }}
         </div>

teams/views.py

@@ -50,9 +50,12 @@ def add_team_member(request, username, member):
     if (team.owner != request.user):
         raise Http404
 
-    team.members.add(user)
-
-    return HttpResponseRedirect('/' + team.slug + '/members/')
+    if ((team.members.all().count() + 1) > team.member_limit):
+        return HttpResponseRedirect('/' + team.slug +
+                                    '/members/?limit-reached')
+    else:
+        team.members.add(user)
+        return HttpResponseRedirect('/' + team.slug + '/members/')
 
 
 @login_required