API: status code 403 returned if new project would exceed limit

When the project limit is reached the user is not allowed to create new ones.
Instead of error code 404 the status code 403 (Forbidden) is returned with error
message via API.

app/models/project.rb

@@ -155,7 +155,7 @@ class Project < ActiveRecord::Base
 
   def check_limit
     unless creator.can_create_project?
-      errors[:base] << ("Your own projects limit is #{creator.projects_limit}! Please contact administrator to increase it")
+      errors[:limit_reached] << ("Your own projects limit is #{creator.projects_limit}! Please contact administrator to increase it")
     end
   rescue
     errors[:base] << ("Can't check your ability to create project")

lib/api/projects.rb

@@ -58,6 +58,9 @@ module Gitlab
         if @project.saved?
           present @project, with: Entities::Project
         else
+          if @project.errors[:limit_reached].present?
+            error!(@project.errors[:limit_reached], 403)
+          end
           not_found!
         end
       end

spec/requests/api/projects_spec.rb

@@ -41,6 +41,11 @@ describe Gitlab::API do
       expect { post api("/projects", user) }.to_not change {Project.count}
     end
 
+    it "should return a 400 error if name not given" do
+      post api("/projects", user)
+      response.status.should == 400
+    end
+
     it "should respond with 201 on success" do
       post api("/projects", user), name: 'foo'
       response.status.should == 201
@@ -51,6 +56,14 @@ describe Gitlab::API do
       response.status.should == 400
     end
 
+    it "should return a 403 error if project limit reached" do
+      (1..user.projects_limit).each do |p|
+        post api("/projects", user), name: "foo#{p}"
+      end
+      post api("/projects", user), name: 'bar'
+      response.status.should == 403
+    end
+
     it "should assign attributes to project" do
       project = attributes_for(:project, {
         description: Faker::Lorem.sentence,