Merge branch 'case_insensitive_user_search' into 'master'

Case insensitive user search

As per implementation by Christopher Arnold.

CHANGELOG

 v 6.8.0
   - Ability to at mention users that are participating in issue and merge req. discussion
   - Enabled GZip Compression for assets in example Nginx, make sure that Nginx is compiled with --with-http_gzip_static_module flag (this is default in Ubuntu)
+  - Make user search case-insensitive (Christopher Arnold)
 
 v 6.7.2
   - Fix upgrader script

app/models/user.rb

@@ -204,7 +204,7 @@ class User < ActiveRecord::Base
     end
 
     def search query
-      where("name LIKE :query OR email LIKE :query OR username LIKE :query", query: "%#{query}%")
+      where("lower(name) LIKE :query OR lower(email) LIKE :query OR lower(username) LIKE :query", query: "%#{query.downcase}%")
     end
 
     def by_username_or_id(name_or_id)

spec/models/user_spec.rb

@@ -292,6 +292,20 @@ describe User do
     end
   end
 
+  describe 'search' do
+    let(:user1) { create(:user, username: 'James', email: 'james@testing.com') }
+    let(:user2) { create(:user, username: 'jameson', email: 'jameson@example.com') }
+
+    it "should be case insensitive" do
+      User.search(user1.username.upcase).to_a.should == [user1]
+      User.search(user1.username.downcase).to_a.should == [user1]
+      User.search(user2.username.upcase).to_a.should == [user2]
+      User.search(user2.username.downcase).to_a.should == [user2]
+      User.search(user1.username.downcase).to_a.count.should == 2
+      User.search(user2.username.downcase).to_a.count.should == 1
+    end
+  end
+
   describe 'by_username_or_id' do
     let(:user1) { create(:user, username: 'foo') }