Sprockets is a crucial Ruby library that is used to serve and compile web assets. However, in Rails 7.0 the library becomes an optional dependency unless the application needs to use Sprockets. In such situations, the
sprockets-rails gem will have to be added to the
1 gem "sprockets-rails"
Before Rails 7.0
Rails would create
app/assets/stylesheets/application.css whether the app was generated using the
--skip-sprockets command. This was so developers could have the option of easily adding the asset pipelining at a later stage should they want. The generated file had the following lines added:
1 2 3 4 /* ... *= require_self *= require_tree . */
After Rails 7.0
For applications that will be generated with
app/assets/stylesheets/application.css will no longer be generated.