Froze rails gems

[depot.git] / vendor / rails / actionpack / lib / action_view / helpers / debug_helper.rb

diff --git a/vendor/rails/actionpack/lib/action_view/helpers/debug_helper.rb b/vendor/rails/actionpack/lib/action_view/helpers/debug_helper.rb
new file mode 100644 (file)
index 0000000..90863fc
--- /dev/null
+++ b/vendor/rails/actionpack/lib/action_view/helpers/debug_helper.rb
@@ -0,0 +1,38 @@
+module ActionView
+  module Helpers
+    # Provides a set of methods for making it easier to debug Rails objects.
+    module DebugHelper
+      # Returns a YAML representation of +object+ wrapped with <pre> and </pre>.
+      # If the object cannot be converted to YAML using +to_yaml+, +inspect+ will be called instead.
+      # Useful for inspecting an object at the time of rendering.
+      #
+      # ==== Example
+      #
+      #   @user = User.new({ :username => 'testing', :password => 'xyz', :age => 42}) %>
+      #   debug(@user)
+      #   # =>
+      #   <pre class='debug_dump'>--- !ruby/object:User
+      #   attributes:
+      #   &nbsp; updated_at:
+      #   &nbsp; username: testing
+      #
+      #   &nbsp; age: 42
+      #   &nbsp; password: xyz
+      #   &nbsp; created_at:
+      #   attributes_cache: {}
+      #
+      #   new_record: true
+      #   </pre>
+
+      def debug(object)
+        begin
+          Marshal::dump(object)
+          "<pre class='debug_dump'>#{h(object.to_yaml).gsub("  ", "&nbsp; ")}</pre>"
+        rescue Exception => e  # errors from Marshal or YAML
+          # Object couldn't be dumped, perhaps because of singleton methods -- this is the fallback
+          "<code class='debug_dump'>#{h(object.inspect)}</code>"
+        end
+      end
+    end
+  end
+end