Merge branch 'make-namespaces-api-available-to-all-users' into 'master'

Make namespace API available to all users

### What does this MR do?

This MR makes it possible for a user to query namespaces to which he/she has access. Also, it adds documentation for the existing API.

### Why was this MR needed?

Even though the `groups` API exists, it might still be useful to have an endpoint that tells the namespace type (e.g. `user` vs. `group`), especially if a user has access to a number of different projects.

### What are the relevant issue numbers?

Closes https://github.com/gitlabhq/gitlabhq/issues/9328

See merge request !708

1 files changed, 6 insertions, 5 deletions

diff --git a/lib/api/namespaces.rb b/lib/api/namespaces.rb
index b90ed6af5fb..50d3729449e 100644
--- a/lib/api/namespaces.rb
+++ b/lib/api/namespaces.rb
@@ -1,10 +1,7 @@
 module API
   # namespaces API
   class Namespaces < Grape::API
-    before do
-      authenticate!
-      authenticated_as_admin!
-    end
+    before { authenticate! }
 
     resource :namespaces do
       # Get a namespaces list
@@ -12,7 +9,11 @@ module API
       # Example Request:
       #  GET /namespaces
       get do
-        @namespaces = Namespace.all
+        @namespaces = if current_user.admin
+                        Namespace.all
+                      else
+                        current_user.namespaces
+                      end
         @namespaces = @namespaces.search(params[:search]) if params[:search].present?
         @namespaces = paginate @namespaces