Rails资产管道澄清

Question

Just a few questions to clarify some confusing factors for me.

About application.js:

1. require_tree . will recursively include all the js files within app/assets/javascripts . If I put a javascript file in app/assets/javascripts/subfolder , it will be included. If I just want to include a specific directory, I should use require_directory
2. lib/assets/javascripts and vendor/assets/javascripts can be referenced from the manifest, application.js . Their javascript files WILL NOT be precompiled unless they are stated in the manifest.
3. When I install a gem that requires a set of javascripts(eg bootstrap) I require the related javascripts files in the manifest too (eg //= require bootstrap ). The javascript files live in the Gem path, and they can be referenced by relative paths too.

Are my statements all true?

Answer 1

For sure I can say that 1 & 3 are true, I use both of those statements in my code. When it comes to numer 2, as Rails Asset Pipeline docs says:

For example, these files:

  app/assets/javascripts/home.js lib/assets/javascripts/moovinator.js vendor/assets/javascripts/slider.js 

would be referenced in a manifest like this:

  //= require home //= require moovinator //= require slider 

http://guides.rubyonrails.org/asset_pipeline.html#asset-organization