Refactoring: Resolved vendor/lib/* path by moving OmniAuth custom authentication backends to lib/omniauth/.

config/initializers/omniauth.rb

@@ -1,3 +1,9 @@
+Dir[ Rails.root.join('lib', 'omniauth', '*') ].each do |file|
+  if File.file?(file)
+    require file
+  end
+end
+
 Rails.application.config.middleware.use OmniAuth::Builder do
 
   # twitter database connect

config/initializers/vendor_lib.rb

@@ -1,6 +0,0 @@
-# load all vendor/lib extentions
-Dir[ Rails.root.join('vendor', 'lib', '*') ].each do |file|
-  if File.file?(file)
-    require file
-  end
-end

lib/omniauth/saml_database.rb

@@ -12,11 +12,11 @@ class SamlDatabase < OmniAuth::Strategies::SAML
     assertion_consumer_service_url = "#{http_type}://#{fqdn}/auth/saml/callback"
 
     config  = Setting.get('auth_saml_credentials') || {}
-    options = config.reject { |k,v| v.blank? }
-                     .merge(
-                        :assertion_consumer_service_url => assertion_consumer_service_url,
-                        :issuer                         => entity_id,
-                      )
+    options = config.reject { |_k, v| v.blank? }
+      .merge(
+        assertion_consumer_service_url: assertion_consumer_service_url,
+        issuer:                         entity_id,
+      )
 
     args[0] = options