Creating a new user with an existing user name

Change error message when we create a new user
with an existing user name.

Change-Id: I795c04672a3c625be074c8af78eb169436ac3895
Closes-Bug: #1404432

openstack_dashboard/api/keystone.py

@@ -300,12 +300,16 @@ def user_list(request, project=None, domain=None, group=None):
 def user_create(request, name=None, email=None, password=None, project=None,
                 enabled=None, domain=None):
     manager = keystoneclient(request, admin=True).users
-    if VERSIONS.active < 3:
-        user = manager.create(name, password, email, project, enabled)
-        return VERSIONS.upgrade_v2_user(user)
-    else:
-        return manager.create(name, password=password, email=email,
-                              project=project, enabled=enabled, domain=domain)
+    try:
+        if VERSIONS.active < 3:
+            user = manager.create(name, password, email, project, enabled)
+            return VERSIONS.upgrade_v2_user(user)
+        else:
+            return manager.create(name, password=password, email=email,
+                                  project=project, enabled=enabled,
+                                  domain=domain)
+    except keystone_exceptions.Conflict:
+        raise exceptions.Conflict()
 
 
 def user_delete(request, user_id):

openstack_dashboard/dashboards/identity/users/forms.py

@@ -145,6 +145,9 @@ class CreateUserForm(BaseUserForm):
                                           _('Unable to add user '
                                             'to primary project.'))
             return new_user
+        except exceptions.Conflict:
+            msg = _('User name "%s" is already used.') % data['name']
+            messages.error(request, msg)
         except Exception:
             exceptions.handle(request, _('Unable to create user.'))