This is a Rails plugin to insert the path name of a rendered partial view as HTML comment in development environment.
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:
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
<%= render "example_disabled", view_source_map: false %> <%= render partial: "example_disabled_partial", view_source_map: false %>