Including them on a per-view basis is not the right approach. First, you skip compilation (and thus you should store the assets in the public folder as static files), then you don't take advantage of the asset pipeline.
You can keep using the pipeline by splitting the assets in bundles and include only the bundle you want.
For example, you can remove the application.css file and split into alpha.css and beta.css, each file with its own includes. Add the files to the compilation in your production.rb file and you're done. Include those selectively, so that when you include alpha you will not load files included in beta.