Rails 5.2 HTTP2 Early Hint nopush support

PikachuEXE · March 21, 2018, 3:58am

HTTP2 Early Hint support is added and will be released in 5.2

https://github.com/rails/rails/pull/30744

However there is no way to specify nopush in early hints when using javascript_include_tag / stylesheet_link_tag

Preload spec:

https://w3c.github.io/preload/?lipi=urn%3Ali%3Apage%3Ad_flagship3_pulse_read%3BwzEEHZvqToaWD2HAfSuSAw%3D%3D#server-push-http-2

This is necessary since there are servers with HTTP2 push support for early hints like Nginx

http://nginx.org/en/docs/http/ngx_http_v2_module.html#http2_push_preload

PikachuEXE · March 21, 2018, 6:27am

Also for fonts / JS, the current helpers does not support adding crossorigin attribute

5.2.x helper source:

github.com

rails/rails/blob/5-2-stable/actionview/lib/action_view/helpers/asset_tag_helper.rb

# frozen_string_literal: true

require "active_support/core_ext/array/extract_options"
require "active_support/core_ext/hash/keys"
require "active_support/core_ext/object/inclusion"
require "active_support/core_ext/object/try"
require "action_view/helpers/asset_url_helper"
require "action_view/helpers/tag_helper"

module ActionView
  # = Action View Asset Tag Helpers
  module Helpers #:nodoc:
    # This module provides methods for generating HTML that links views to assets such
    # as images, JavaScripts, stylesheets, and feeds. These methods do not verify
    # the assets exist before linking to them:
    #
    #   image_tag("rails.png")
    #   # => <img src="/assets/rails.png" />
    #   stylesheet_link_tag("application")
    #   # => <link href="/assets/application.css?body=1" media="screen" rel="stylesheet" />

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Topic		Replies	Views
Proposal: Add AssetTagHelper that preload javascript file rubyonrails-core actionview	0	303	March 27, 2024
Critial preloading assets rubyonrails-talk actionview	5	1151	October 11, 2021
asset tag helper rubyonrails-talk	0	85	May 24, 2007
[ActionView] Add `nonce: true` option to `stylesheet_link_tag` rubyonrails-core	2	1475	January 7, 2024
[Proposal] JavaScript tag helpers should add nonce if strict-dynamic policy is in place rubyonrails-core proposal	0	1505	May 12, 2023

Rails 5.2 HTTP2 Early Hint nopush support

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