20160420 - Asset Pipeline Challenge

mark_miranda_asset_pipeline_challenge.md

What does it mean to concatenate files? Find an image of an example concatenated file. Why would we want to concatenate files?

• appending one file to another file

What does it mean to precompile files? What does this have to do with coffeescript and sass files?

• turns sass in css, coffeescript into js, erb into html before needing them to save time/bandwidth

What does it mean to minify files? Find an image of an example minified file. Why would we want to minify files?

• http://cdn.speedrak.com/images/blog-images/seoblogger-after-minify-css.PNG
• Minifying files means to strip whitespace and unnecessary comments/information

Start up the server for Catch 'em All (rails s) and navigate to http://localhost:3000/assets/application.js. Then open up the code for application.js in your text editor. Why are these not the same?

• I'm not sure, but I think it has something to do with pre-compiling?

What is a manifest (in terms of the asset pipeline)? Where can you find two manifests in Catch 'em All?

• A manifest is what the asset pipeline uses in order to determine what to include vs serve
• application.js & application.css

In regular HTML files, we bring in css files with . How is this done in a Rails project? Where do you see this line in Catch 'em All?

• <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
• in application.html.erb

How is a digest/fingerprint used on the assets for caching purposes?

• It is a way to determine if a file has changed. Filename is dependent on file contents, creates a fingerprint. if the fingerprint is changed, the file is reserved to the client

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