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Revert "Revert "FEATURE: Preload resources via link header (#18475)" (#18511)" (#18531)

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* Revert "Revert "FEATURE: Preload resources via link header (#18475)" (#18511)"

This reverts commit 95a57f7e0c7e78ecac14760ae4751e0ae2e8ea0d.

* put behind feature flag

* env -> global setting

* declare global setting

* forgot one spot
This commit is contained in:
Rafael dos Santos Silva
2022-10-11 20:11:44 -03:00
committed by GitHub
parent 47fa4dbef3
commit 6888eb5c2d
8 changed files with 150 additions and 20 deletions
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25
app/helpers/application_helper.rb
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@ -142,10 +142,21 @@ module ApplicationHelper
end
def preload_script_url(url)
<<~HTML.html_safe
<link rel="preload" href="#{url}" as="script">
<script defer src="#{url}"></script>
HTML
add_resource_preload_list(url, 'script')
if GlobalSetting.preload_link_header
<<~HTML.html_safe
<script defer src="#{url}"></script>
HTML
else
<<~HTML.html_safe
<link rel="preload" href="#{url}" as="script">
<script defer src="#{url}"></script>
HTML
end
end
def add_resource_preload_list(resource_url, type)
@links_to_preload << %Q(<#{resource_url}>; rel="preload"; as="#{type}") if !@links_to_preload.nil?
end
def discourse_csrf_tags
@ -589,7 +600,7 @@ module ApplicationHelper
stylesheet_manager
end
manager.stylesheet_link_tag(name, 'all')
manager.stylesheet_link_tag(name, 'all', self.method(:add_resource_preload_list))
end
def discourse_preload_color_scheme_stylesheets
@ -605,10 +616,10 @@ module ApplicationHelper
def discourse_color_scheme_stylesheets
result = +""
result << stylesheet_manager.color_scheme_stylesheet_link_tag(scheme_id, 'all')
result << stylesheet_manager.color_scheme_stylesheet_link_tag(scheme_id, 'all', self.method(:add_resource_preload_list))
if dark_scheme_id != -1
result << stylesheet_manager.color_scheme_stylesheet_link_tag(dark_scheme_id, '(prefers-color-scheme: dark)')
result << stylesheet_manager.color_scheme_stylesheet_link_tag(dark_scheme_id, '(prefers-color-scheme: dark)', self.method(:add_resource_preload_list))
end
result.html_safe