Class: Middleware::TurboDev
- Inherits:
-
Object
- Object
- Middleware::TurboDev
- Defined in:
- lib/middleware/turbo_dev.rb
Overview
Cheat and bypass Rails in development mode if the client attempts to download a static asset that’s already been downloaded.
Also ensures that assets are not cached in development mode. Around Chrome 29, the behavior of ‘must-revalidate` changed and would often not request assets that had changed.
To use, include in your project and add the following to development.rb:
require 'middleware/turbo_dev'
config.middleware.insert 0, Middleware::TurboDev
Instance Method Summary collapse
- #call(env) ⇒ Object
-
#initialize(app, settings = {}) ⇒ TurboDev
constructor
A new instance of TurboDev.
Constructor Details
#initialize(app, settings = {}) ⇒ TurboDev
Returns a new instance of TurboDev.
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# File 'lib/middleware/turbo_dev.rb', line 15 def initialize(app, settings = {}) @app = app end |
Instance Method Details
#call(env) ⇒ Object
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# File 'lib/middleware/turbo_dev.rb', line 19 def call(env) root = "#{GlobalSetting.relative_url_root}/assets/" is_asset = env["REQUEST_PATH"] && env["REQUEST_PATH"].starts_with?(root) # hack to bypass all middleware if serving assets, a lot faster 4.5 seconds -> 1.5 seconds if (etag = env["HTTP_IF_NONE_MATCH"]) && is_asset name = env["REQUEST_PATH"][(root.length)..-1] etag = etag.gsub "\"", "" asset = Rails.application.assets.find_asset(name) return 304, {}, [] if asset && asset.digest == etag end status, headers, response = @app.call(env) headers["Cache-Control"] = "no-cache" if is_asset [status, headers, response] end |