diff --git a/config/environments/development.rb b/config/environments/development.rb
index 85c9a6080e..371e7e4b00 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -14,4 +14,15 @@
 config.action_controller.perform_caching             = false
 
 # Don't care if the mailer can't send
-config.action_mailer.raise_delivery_errors = false
\ No newline at end of file
+config.action_mailer.raise_delivery_errors = false
+
+# use hirb
+config.gem 'hirb'
+
+if $0 == 'irb'
+  require 'hirb'
+  Hirb.enable
+
+  # show sql queries in console
+  ActiveRecord::Base.logger = Logger.new STDOUT
+end
\ No newline at end of file
diff --git a/config/hirb.yml b/config/hirb.yml
new file mode 100644
index 0000000000..6daf6575b6
--- /dev/null
+++ b/config/hirb.yml
@@ -0,0 +1,13 @@
+:output:
+# Url Model
+  Url:
+    :options:
+      :fields:
+        - id
+        - name
+        - description
+        - quick_mode_tag_list
+  NamespaceTree:
+    :class: Hirb::Helpers::Tree
+    :output_method: to_tree
+    :ancestor: true