Add nested groups support on data level

* add parent_id field to namespaces table to store relation with nested groups
* create routes table to keep information about full path of every group and project
* project/group lookup by full path from routes table

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

2 files changed, 2 insertions, 2 deletions

diff --git a/lib/api/helpers.rb b/lib/api/helpers.rb
index 7f94ede7940..96ccde760db 100644
--- a/lib/api/helpers.rb
+++ b/lib/api/helpers.rb
@@ -108,7 +108,7 @@ module API
       if id =~ /^\d+$/
         Group.find_by(id: id)
       else
-        Group.find_by(path: id)
+        Group.find_by_full_path(id)
       end
     end
 
diff --git a/lib/constraints/group_url_constrainer.rb b/lib/constraints/group_url_constrainer.rb
index 5711d96a586..bae4db1ca4d 100644
--- a/lib/constraints/group_url_constrainer.rb
+++ b/lib/constraints/group_url_constrainer.rb
@@ -4,7 +4,7 @@ class GroupUrlConstrainer
 
     return false unless valid?(id)
 
-    Group.find_by(path: id).present?
+    Group.find_by_full_path(id).present?
   end
 
   private