In case when we need to override some partial which may be plased in some engine-gem it may be painfull to findout which partial are rendered in certain place.

For this purposes created gem painless_partials. It aimed to:

• as-minimum: markup html/xml by comments with partial paths (done)

• as-maximum: provide service for coping partial from gem into main app (50% done) or into some extension (site-theme and so on)

It is usefurl, for example, in development of application based on spree.

Works with Rails 3.0+

Add gem into Gemfile

gem 'painless_partials'

or

gem 'painless_partials', :git => 'git://github.com/x2es/painless_partials.git'

Just open page source in browser and find comment “TEMPLATE /path/to/partial.html.erb” placed above code which you want to override. For example:

<!-- TEMPLATE: /usr/local/rvm/gems/[email protected]/gems/spree_core-0.30.1/app/views/shared/_google_analytics.html.erb -->

Also painless_partials gives tip about how to override partial. For example:

<!-- 
   For overriding this partial you may run from project (or engine/extension) dir:
    $ mkdir -p app/views/shared && cp /usr/local/rvm/gems/ruby-1.9.2-p0@awesome-gemset/gems/spree_core-0.30.1/app/views/shared/_google_analytics.html.erb app/views/shared/_google_analytics.html.erb
   NOTE: Please make sure that it is what you want before running. In common case it is.
-->

In common case all you need it to point project or engine/extension dir in your therminal and invoke this command.

Tip will be shown only for “foreign” sources. “Foreign” means - sources placed outside “#{Rails.root}/../”. So if you develop extensions placed in #{Rails.root}/../my-extensions/ - tip does not appears for this sources.

• github.com/fcheung/tattler

Also good partials helper with javascript ui: github.com/markevans/partial_identifier

See github.com/x2es/painless_partials/issues