Add property to get number of users in an application

atst/models/application.py

@@ -17,6 +17,14 @@ class Application(Base, mixins.TimestampsMixin, mixins.AuditableMixin):
     portfolio = relationship("Portfolio")
     environments = relationship("Environment", back_populates="application")
 
+    @property
+    def users(self):
+        return set([user for env in self.environments for user in env.users])
+
+    @property
+    def num_users(self):
+        return len(self.users)
+
     @property
     def displayname(self):
         return self.name

templates/portfolios/applications/index.html

@@ -48,7 +48,7 @@
                 {% endif %}
                 <a class='icon-link' href='{{ url_for("portfolios.edit_application", portfolio_id=portfolio.id, application_id=application.id) }}'>
                   <span>Team</span>
-                  <span class='counter'>11</span>
+                  <span class='counter'>{{ application.num_users }}</span>
                 </a>
               </div>
             </div>

tests/models/test_application.py

@@ -0,0 +1,22 @@
+from atst.domain.environments import Environments
+from tests.factories import ApplicationFactory, UserFactory
+
+
+def test_application_num_users():
+    application = ApplicationFactory.create(
+        environments=[{"name": "dev"}, {"name": "staging"}, {"name": "prod"}]
+    )
+    assert application.num_users == 0
+
+    first_env = application.environments[0]
+    user1 = UserFactory()
+    Environments.add_member(first_env, user1, "developer")
+    assert application.num_users == 1
+
+    second_env = application.environments[-1]
+    Environments.add_member(second_env, user1, "developer")
+    assert application.num_users == 1
+
+    user2 = UserFactory()
+    Environments.add_member(second_env, user2, "developer")
+    assert application.num_users == 2