Refactor go live tags into service model

Since this function only takes one argument, a service, it might as well
be a method of the service.

app/main/views/service_settings.py

@@ -244,7 +244,7 @@ def submit_request_to_go_live(service_id):
         ticket_type=zendesk_client.TYPE_QUESTION,
         user_email=current_user.email_address,
         user_name=current_user.name,
-        tags=get_request_to_go_live_tags(current_service),
+        tags=current_service.request_to_go_live_tags,
     )
 
     flash('Thanks for your request to go live. We’ll get back to you within one working day.', 'default')
@@ -1072,34 +1072,6 @@ def check_contact_details_type(contact_details):
         return 'phone_number'
 
 
-def get_request_to_go_live_tags(service):
-    return list(_get_request_to_go_live_tags(service))
-
-
-def _get_request_to_go_live_tags(service):
-
-    BASE = 'notify_request_to_go_live'
-
-    yield BASE
-
-    if service.go_live_checklist_completed and service.organisation.agreement_signed:
-        yield BASE + '_complete'
-        return
-
-    for test, tag in (
-        (True, ''),
-        (not service.volumes, '_volumes'),
-        (not service.go_live_checklist_completed, '_checklist'),
-        (not service.organisation.agreement_signed, '_mou'),
-        (service.needs_to_add_email_reply_to_address, '_email_reply_to'),
-        (not service.has_team_members, '_team_member'),
-        (not service.has_templates, '_template_content'),
-        (service.needs_to_change_sms_sender, '_sms_sender'),
-    ):
-        if test:
-            yield BASE + '_incomplete' + tag
-
-
 def print_if_number(value):
     return value if isinstance(value, int) else ''
 

app/models/service.py

@@ -543,3 +543,30 @@ class Service(JSONModel):
 
     def get_api_key(self, id):
         return self._get_by_id(self.api_keys, id)
+
+    @property
+    def request_to_go_live_tags(self):
+        return list(self._get_request_to_go_live_tags())
+
+    def _get_request_to_go_live_tags(self):
+
+        BASE = 'notify_request_to_go_live'
+
+        yield BASE
+
+        if self.go_live_checklist_completed and self.organisation.agreement_signed:
+            yield BASE + '_complete'
+            return
+
+        for test, tag in (
+            (True, ''),
+            (not self.volumes, '_volumes'),
+            (not self.go_live_checklist_completed, '_checklist'),
+            (not self.organisation.agreement_signed, '_mou'),
+            (self.needs_to_add_email_reply_to_address, '_email_reply_to'),
+            (not self.has_team_members, '_team_member'),
+            (not self.has_templates, '_template_content'),
+            (self.needs_to_change_sms_sender, '_sms_sender'),
+        ):
+            if test:
+                yield BASE + '_incomplete' + tag

tests/app/main/views/test_service_settings.py

@@ -1555,9 +1555,9 @@ def test_ready_to_go_live(
         'id': SERVICE_ONE_ID
     }).go_live_checklist_completed_as_yes_no == expected_readyness
 
-    assert list(app.main.views.service_settings._get_request_to_go_live_tags(
+    assert app.models.service.Service(
-        app.models.service.Service({'id': SERVICE_ONE_ID})
+        {'id': SERVICE_ONE_ID}
-    )) == expected_tags
+    ).request_to_go_live_tags == expected_tags
 
 
 @pytest.mark.parametrize('route', [