ViewSourceMap

This is a Rails plugin to insert the path name of a rendered partial view as HTML comment in development environment.

Usage

In your Gemfile

group :development do
  gem "view_source_map"
end

and launch your rails server in development environment:

$ rails s

then see the source of your page:

Tips

Sometimes this adds too much noise to the html when you're developing.
There is a simple way to turn it off.

$ DISABLE_VIEW_SOURCE_MAP=1 rails s