mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 08:09:33 +08:00
14d97f9cf1
Currently when generating a onebox for Discourse topics, some important context is missing such as categories and tags. This patch addresses this issue by introducing a new onebox engine dedicated to display this information when available. Indeed to get this new information, categories and tags are exposed in the topic metadata as opengraph tags.
760 lines
22 KiB
Ruby
760 lines
22 KiB
Ruby
# coding: utf-8
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# frozen_string_literal: true
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require "current_user"
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require "canonical_url"
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module ApplicationHelper
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include CurrentUser
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include CanonicalURL::Helpers
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include ConfigurableUrls
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include GlobalPath
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def self.extra_body_classes
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@extra_body_classes ||= Set.new
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end
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def discourse_config_environment(testing: false)
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# TODO: Can this come from Ember CLI somehow?
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config = {
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modulePrefix: "discourse",
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environment: Rails.env,
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rootURL: Discourse.base_path,
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locationType: "history",
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historySupportMiddleware: false,
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EmberENV: {
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FEATURES: {
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},
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EXTEND_PROTOTYPES: {
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Date: false,
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},
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_APPLICATION_TEMPLATE_WRAPPER: false,
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_DEFAULT_ASYNC_OBSERVERS: true,
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_JQUERY_INTEGRATION: true,
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},
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APP: {
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name: "discourse",
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version: "#{Discourse::VERSION::STRING} #{Discourse.git_version}",
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exportApplicationGlobal: true,
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},
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}
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if testing
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config[:environment] = "test"
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config[:locationType] = "none"
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config[:APP][:autoboot] = false
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config[:APP][:rootElement] = "#ember-testing"
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end
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config.to_json
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end
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def google_universal_analytics_json(ua_domain_name = nil)
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result = {}
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result[:cookieDomain] = ua_domain_name.gsub(%r{^http(s)?://}, "") if ua_domain_name
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result[:userId] = current_user.id if current_user.present?
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result[:allowLinker] = true if SiteSetting.ga_universal_auto_link_domains.present?
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result.to_json
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end
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def ga_universal_json
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google_universal_analytics_json(SiteSetting.ga_universal_domain_name)
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end
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def google_tag_manager_json
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google_universal_analytics_json
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end
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def self.google_tag_manager_nonce
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@gtm_nonce ||= SecureRandom.hex
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end
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def shared_session_key
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if SiteSetting.long_polling_base_url != "/" && current_user
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sk = "shared_session_key"
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return request.env[sk] if request.env[sk]
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request.env[sk] = key = (session[sk] ||= SecureRandom.hex)
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Discourse.redis.setex "#{sk}_#{key}", 7.days, current_user.id.to_s
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key
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end
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end
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def is_brotli_req?
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request.env["HTTP_ACCEPT_ENCODING"] =~ /br/
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end
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def is_gzip_req?
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request.env["HTTP_ACCEPT_ENCODING"] =~ /gzip/
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end
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def script_asset_path(script)
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path = ActionController::Base.helpers.asset_path("#{script}.js")
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if GlobalSetting.use_s3? && GlobalSetting.s3_cdn_url
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resolved_s3_asset_cdn_url =
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GlobalSetting.s3_asset_cdn_url.presence || GlobalSetting.s3_cdn_url
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if GlobalSetting.cdn_url
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folder = ActionController::Base.config.relative_url_root || "/"
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path =
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path.gsub(
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File.join(GlobalSetting.cdn_url, folder, "/"),
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File.join(resolved_s3_asset_cdn_url, "/"),
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)
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else
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# we must remove the subfolder path here, assets are uploaded to s3
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# without it getting involved
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if ActionController::Base.config.relative_url_root
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path = path.sub(ActionController::Base.config.relative_url_root, "")
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end
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path = "#{resolved_s3_asset_cdn_url}#{path}"
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end
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# assets needed for theme testing are not compressed because they take a fair
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# amount of time to compress (+30 seconds) during rebuilds/deploys when the
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# vast majority of sites will never need them, so it makes more sense to serve
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# them uncompressed instead of making everyone's rebuild/deploy take +30 more
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# seconds.
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if !script.start_with?("discourse/tests/")
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if is_brotli_req?
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path = path.gsub(/\.([^.]+)$/, '.br.\1')
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elsif is_gzip_req?
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path = path.gsub(/\.([^.]+)$/, '.gz.\1')
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end
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end
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elsif GlobalSetting.cdn_url&.start_with?("https") && is_brotli_req? &&
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Rails.env != "development"
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path = path.gsub("#{GlobalSetting.cdn_url}/assets/", "#{GlobalSetting.cdn_url}/brotli_asset/")
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end
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path
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end
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def preload_script(script)
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scripts = [script]
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if chunks = EmberCli.script_chunks[script]
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scripts.push(*chunks)
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end
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scripts
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.map do |name|
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path = script_asset_path(name)
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preload_script_url(path)
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end
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.join("\n")
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.html_safe
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end
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def preload_script_url(url)
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add_resource_preload_list(url, "script")
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if GlobalSetting.preload_link_header
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<<~HTML.html_safe
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<script defer src="#{url}"></script>
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HTML
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else
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<<~HTML.html_safe
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<link rel="preload" href="#{url}" as="script">
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<script defer src="#{url}"></script>
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HTML
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end
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end
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def add_resource_preload_list(resource_url, type)
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if !@links_to_preload.nil?
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@links_to_preload << %Q(<#{resource_url}>; rel="preload"; as="#{type}")
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end
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end
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def discourse_csrf_tags
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# anon can not have a CSRF token cause these are all pages
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# that may be cached, causing a mismatch between session CSRF
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# and CSRF on page and horrible impossible to debug login issues
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csrf_meta_tags if current_user
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end
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def html_classes
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list = []
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list << (mobile_view? ? "mobile-view" : "desktop-view")
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list << (mobile_device? ? "mobile-device" : "not-mobile-device")
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list << "ios-device" if ios_device?
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list << "rtl" if rtl?
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list << text_size_class
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list << "anon" unless current_user
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list.join(" ")
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end
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def body_classes
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result = ApplicationHelper.extra_body_classes.to_a
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result << "category-#{@category.slug_path.join("-")}" if @category && @category.url.present?
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if current_user.present? && current_user.primary_group_id &&
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primary_group_name = Group.where(id: current_user.primary_group_id).pluck_first(:name)
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result << "primary-group-#{primary_group_name.downcase}"
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end
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result.join(" ")
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end
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def text_size_class
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requested_cookie_size, cookie_seq = cookies[:text_size]&.split("|")
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server_seq = current_user&.user_option&.text_size_seq
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if cookie_seq && server_seq && cookie_seq.to_i >= server_seq &&
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UserOption.text_sizes.keys.include?(requested_cookie_size&.to_sym)
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cookie_size = requested_cookie_size
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end
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size = cookie_size || current_user&.user_option&.text_size || SiteSetting.default_text_size
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"text-size-#{size}"
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end
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def escape_unicode(javascript)
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if javascript
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javascript = javascript.scrub
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javascript.gsub!(/\342\200\250/u, "
")
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javascript.gsub!(%r{(</)}u, '\u003C/')
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javascript
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else
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""
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end
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end
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def format_topic_title(title)
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PrettyText.unescape_emoji strip_tags(title)
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end
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def with_format(format, &block)
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old_formats = formats
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self.formats = [format]
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block.call
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self.formats = old_formats
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nil
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end
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def age_words(secs)
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AgeWords.age_words(secs)
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end
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def short_date(dt)
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if dt.year == Time.now.year
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I18n.l(dt, format: :short_no_year)
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else
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I18n.l(dt, format: :date_only)
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end
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end
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def guardian
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@guardian ||= Guardian.new(current_user)
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end
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def admin?
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current_user.try(:admin?)
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end
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def moderator?
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current_user.try(:moderator?)
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end
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def staff?
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current_user.try(:staff?)
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end
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def rtl?
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%w[ar ur fa_IR he].include? I18n.locale.to_s
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end
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def html_lang
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(request ? I18n.locale.to_s : SiteSetting.default_locale).sub("_", "-")
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end
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# Creates open graph and twitter card meta data
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def crawlable_meta_data(opts = nil)
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opts ||= {}
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opts[:url] ||= "#{Discourse.base_url_no_prefix}#{request.fullpath}"
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# if slug generation method is encoded, non encoded urls can sneak in
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# via bots
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url = opts[:url]
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if url.encoding.name != "UTF-8" || !url.valid_encoding?
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opts[:url] = url.dup.force_encoding("UTF-8").scrub!
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end
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if opts[:image].blank?
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twitter_summary_large_image_url = SiteSetting.site_twitter_summary_large_image_url
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if twitter_summary_large_image_url.present?
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opts[:twitter_summary_large_image] = twitter_summary_large_image_url
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end
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opts[:image] = SiteSetting.site_opengraph_image_url
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end
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# Use the correct scheme for opengraph/twitter image
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opts[:image] = get_absolute_image_url(opts[:image]) if opts[:image].present?
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opts[:twitter_summary_large_image] = get_absolute_image_url(
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opts[:twitter_summary_large_image],
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) if opts[:twitter_summary_large_image].present?
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result = []
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result << tag(:meta, property: "og:site_name", content: SiteSetting.title)
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result << tag(:meta, property: "og:type", content: "website")
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generate_twitter_card_metadata(result, opts)
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result << tag(:meta, property: "og:image", content: opts[:image]) if opts[:image].present?
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%i[url title description].each do |property|
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if opts[property].present?
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content = (property == :url ? opts[property] : gsub_emoji_to_unicode(opts[property]))
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result << tag(:meta, { property: "og:#{property}", content: content }, nil, true)
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result << tag(:meta, { name: "twitter:#{property}", content: content }, nil, true)
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end
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end
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Array
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.wrap(opts[:breadcrumbs])
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.each do |breadcrumb|
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result << tag(:meta, property: "og:article:section", content: breadcrumb[:name])
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result << tag(:meta, property: "og:article:section:color", content: breadcrumb[:color])
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end
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Array
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.wrap(opts[:tags])
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.each { |tag_name| result << tag(:meta, property: "og:article:tag", content: tag_name) }
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if opts[:read_time] && opts[:read_time] > 0 && opts[:like_count] && opts[:like_count] > 0
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result << tag(:meta, name: "twitter:label1", value: I18n.t("reading_time"))
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result << tag(:meta, name: "twitter:data1", value: "#{opts[:read_time]} mins 🕑")
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result << tag(:meta, name: "twitter:label2", value: I18n.t("likes"))
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result << tag(:meta, name: "twitter:data2", value: "#{opts[:like_count]} ❤")
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end
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if opts[:published_time]
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result << tag(:meta, property: "article:published_time", content: opts[:published_time])
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end
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result << tag(:meta, property: "og:ignore_canonical", content: true) if opts[:ignore_canonical]
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result.join("\n")
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end
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private def generate_twitter_card_metadata(result, opts)
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img_url =
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(
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if opts[:twitter_summary_large_image].present?
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opts[:twitter_summary_large_image]
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else
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opts[:image]
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end
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)
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# Twitter does not allow SVGs, see https://developer.twitter.com/en/docs/twitter-for-websites/cards/overview/markup
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if img_url.ends_with?(".svg")
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img_url = SiteSetting.site_logo_url.ends_with?(".svg") ? nil : SiteSetting.site_logo_url
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end
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if opts[:twitter_summary_large_image].present? && img_url.present?
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result << tag(:meta, name: "twitter:card", content: "summary_large_image")
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result << tag(:meta, name: "twitter:image", content: img_url)
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elsif opts[:image].present? && img_url.present?
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result << tag(:meta, name: "twitter:card", content: "summary")
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result << tag(:meta, name: "twitter:image", content: img_url)
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else
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result << tag(:meta, name: "twitter:card", content: "summary")
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end
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end
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def render_sitelinks_search_tag
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if current_page?("/") || current_page?(Discourse.base_path)
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json = {
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"@context" => "http://schema.org",
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"@type" => "WebSite",
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:url => Discourse.base_url,
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:potentialAction => {
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"@type" => "SearchAction",
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:target => "#{Discourse.base_url}/search?q={search_term_string}",
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"query-input" => "required name=search_term_string",
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},
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}
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content_tag(:script, MultiJson.dump(json).html_safe, type: "application/ld+json")
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end
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end
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def gsub_emoji_to_unicode(str)
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Emoji.gsub_emoji_to_unicode(str)
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end
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def application_logo_url
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@application_logo_url ||=
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begin
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if mobile_view?
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if dark_color_scheme? && SiteSetting.site_mobile_logo_dark_url.present?
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SiteSetting.site_mobile_logo_dark_url
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elsif SiteSetting.site_mobile_logo_url.present?
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SiteSetting.site_mobile_logo_url
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end
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else
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if dark_color_scheme? && SiteSetting.site_logo_dark_url.present?
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SiteSetting.site_logo_dark_url
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else
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SiteSetting.site_logo_url
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end
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end
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end
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end
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def application_logo_dark_url
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@application_logo_dark_url ||=
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begin
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if dark_scheme_id != -1
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if mobile_view? && SiteSetting.site_mobile_logo_dark_url != application_logo_url
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SiteSetting.site_mobile_logo_dark_url
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elsif !mobile_view? && SiteSetting.site_logo_dark_url != application_logo_url
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SiteSetting.site_logo_dark_url
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end
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end
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end
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end
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def login_path
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"#{Discourse.base_path}/login"
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end
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def mobile_view?
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MobileDetection.resolve_mobile_view!(request.user_agent, params, session)
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end
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def crawler_layout?
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controller&.use_crawler_layout?
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end
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def include_crawler_content?
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crawler_layout? || !mobile_view? || !modern_mobile_device?
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end
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def modern_mobile_device?
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MobileDetection.modern_mobile_device?(request.user_agent)
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end
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def mobile_device?
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MobileDetection.mobile_device?(request.user_agent)
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end
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def ios_device?
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MobileDetection.ios_device?(request.user_agent)
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end
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def customization_disabled?
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request.env[ApplicationController::NO_THEMES]
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end
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def include_ios_native_app_banner?
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current_user && current_user.trust_level >= 1 && SiteSetting.native_app_install_banner_ios
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end
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def ios_app_argument
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# argument only makes sense for DiscourseHub app
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if SiteSetting.ios_app_id == "1173672076"
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", app-argument=discourse://new?siteUrl=#{Discourse.base_url}"
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else
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""
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end
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end
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def include_splash_screen?
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# A bit basic for now but will be expanded later
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SiteSetting.splash_screen
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end
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def allow_plugins?
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!request.env[ApplicationController::NO_PLUGINS]
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end
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def allow_third_party_plugins?
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allow_plugins? && !request.env[ApplicationController::NO_UNOFFICIAL_PLUGINS]
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end
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def normalized_safe_mode
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safe_mode = []
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safe_mode << ApplicationController::NO_THEMES if customization_disabled?
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safe_mode << ApplicationController::NO_PLUGINS if !allow_plugins?
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safe_mode << ApplicationController::NO_UNOFFICIAL_PLUGINS if !allow_third_party_plugins?
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safe_mode.join(",")
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end
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def loading_admin?
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return false unless defined?(controller)
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return false if controller.class.name.blank?
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controller.class.name.split("::").first == "Admin"
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end
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def category_badge(category, opts = nil)
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CategoryBadge.html_for(category, opts).html_safe
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end
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def self.all_connectors
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@all_connectors = Dir.glob("plugins/*/app/views/connectors/**/*.html.erb")
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end
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def server_plugin_outlet(name, locals: {})
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return "" if !GlobalSetting.load_plugins?
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matcher = Regexp.new("/connectors/#{name}/.*\.html\.erb$")
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erbs = ApplicationHelper.all_connectors.select { |c| c =~ matcher }
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return "" if erbs.blank?
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result = +""
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erbs.each { |erb| result << render(inline: File.read(erb), locals: locals) }
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result.html_safe
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end
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def topic_featured_link_domain(link)
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begin
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uri = UrlHelper.encode_and_parse(link)
|
|
uri = URI.parse("http://#{uri}") if uri.scheme.nil?
|
|
host = uri.host.downcase
|
|
host.start_with?("www.") ? host[4..-1] : host
|
|
rescue StandardError
|
|
""
|
|
end
|
|
end
|
|
|
|
def theme_id
|
|
if customization_disabled?
|
|
nil
|
|
else
|
|
request.env[:resolved_theme_id]
|
|
end
|
|
end
|
|
|
|
def stylesheet_manager
|
|
return @stylesheet_manager if defined?(@stylesheet_manager)
|
|
@stylesheet_manager = Stylesheet::Manager.new(theme_id: theme_id)
|
|
end
|
|
|
|
def scheme_id
|
|
return @scheme_id if defined?(@scheme_id)
|
|
|
|
custom_user_scheme_id = cookies[:color_scheme_id] || current_user&.user_option&.color_scheme_id
|
|
if custom_user_scheme_id && ColorScheme.find_by_id(custom_user_scheme_id)
|
|
return custom_user_scheme_id
|
|
end
|
|
|
|
return if theme_id.blank?
|
|
|
|
@scheme_id = Theme.where(id: theme_id).pluck_first(:color_scheme_id)
|
|
end
|
|
|
|
def dark_scheme_id
|
|
cookies[:dark_scheme_id] || current_user&.user_option&.dark_scheme_id ||
|
|
SiteSetting.default_dark_mode_color_scheme_id
|
|
end
|
|
|
|
def current_homepage
|
|
current_user&.user_option&.homepage || SiteSetting.anonymous_homepage
|
|
end
|
|
|
|
def build_plugin_html(name)
|
|
return "" unless allow_plugins?
|
|
DiscoursePluginRegistry.build_html(name, controller) || ""
|
|
end
|
|
|
|
# If there is plugin HTML return that, otherwise yield to the template
|
|
def replace_plugin_html(name)
|
|
if (html = build_plugin_html(name)).present?
|
|
html
|
|
else
|
|
yield
|
|
nil
|
|
end
|
|
end
|
|
|
|
def theme_lookup(name)
|
|
Theme.lookup_field(
|
|
theme_id,
|
|
mobile_view? ? :mobile : :desktop,
|
|
name,
|
|
skip_transformation: request.env[:skip_theme_ids_transformation].present?,
|
|
)
|
|
end
|
|
|
|
def theme_translations_lookup
|
|
Theme.lookup_field(
|
|
theme_id,
|
|
:translations,
|
|
I18n.locale,
|
|
skip_transformation: request.env[:skip_theme_ids_transformation].present?,
|
|
)
|
|
end
|
|
|
|
def theme_js_lookup
|
|
Theme.lookup_field(
|
|
theme_id,
|
|
:extra_js,
|
|
nil,
|
|
skip_transformation: request.env[:skip_theme_ids_transformation].present?,
|
|
)
|
|
end
|
|
|
|
def discourse_stylesheet_preload_tag(name, opts = {})
|
|
manager =
|
|
if opts.key?(:theme_id)
|
|
Stylesheet::Manager.new(theme_id: customization_disabled? ? nil : opts[:theme_id])
|
|
else
|
|
stylesheet_manager
|
|
end
|
|
|
|
manager.stylesheet_preload_tag(name, "all")
|
|
end
|
|
|
|
def discourse_stylesheet_link_tag(name, opts = {})
|
|
manager =
|
|
if opts.key?(:theme_id)
|
|
Stylesheet::Manager.new(theme_id: customization_disabled? ? nil : opts[:theme_id])
|
|
else
|
|
stylesheet_manager
|
|
end
|
|
|
|
manager.stylesheet_link_tag(name, "all", self.method(:add_resource_preload_list))
|
|
end
|
|
|
|
def discourse_preload_color_scheme_stylesheets
|
|
result = +""
|
|
result << stylesheet_manager.color_scheme_stylesheet_preload_tag(scheme_id, "all")
|
|
|
|
if dark_scheme_id != -1
|
|
result << stylesheet_manager.color_scheme_stylesheet_preload_tag(
|
|
dark_scheme_id,
|
|
"(prefers-color-scheme: dark)",
|
|
)
|
|
end
|
|
|
|
result.html_safe
|
|
end
|
|
|
|
def discourse_color_scheme_stylesheets
|
|
result = +""
|
|
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)",
|
|
self.method(:add_resource_preload_list),
|
|
)
|
|
end
|
|
|
|
result.html_safe
|
|
end
|
|
|
|
def discourse_theme_color_meta_tags
|
|
result = +""
|
|
if dark_scheme_id != -1
|
|
result << <<~HTML
|
|
<meta name="theme-color" media="(prefers-color-scheme: light)" content="##{ColorScheme.hex_for_name("header_background", scheme_id)}">
|
|
<meta name="theme-color" media="(prefers-color-scheme: dark)" content="##{ColorScheme.hex_for_name("header_background", dark_scheme_id)}">
|
|
HTML
|
|
else
|
|
result << <<~HTML
|
|
<meta name="theme-color" media="all" content="##{ColorScheme.hex_for_name("header_background", scheme_id)}">
|
|
HTML
|
|
end
|
|
result.html_safe
|
|
end
|
|
|
|
def dark_color_scheme?
|
|
return false if scheme_id.blank?
|
|
ColorScheme.find_by_id(scheme_id)&.is_dark?
|
|
end
|
|
|
|
def preloaded_json
|
|
return "{}" if @preloaded.blank?
|
|
@preloaded.transform_values { |value| escape_unicode(value) }.to_json
|
|
end
|
|
|
|
def client_side_setup_data
|
|
setup_data = {
|
|
cdn: Rails.configuration.action_controller.asset_host,
|
|
base_url: Discourse.base_url,
|
|
base_uri: Discourse.base_path,
|
|
environment: Rails.env,
|
|
letter_avatar_version: LetterAvatar.version,
|
|
markdown_it_url: script_asset_path("markdown-it-bundle"),
|
|
service_worker_url: "service-worker.js",
|
|
default_locale: SiteSetting.default_locale,
|
|
asset_version: Discourse.assets_digest,
|
|
disable_custom_css: loading_admin?,
|
|
highlight_js_path: HighlightJs.path,
|
|
svg_sprite_path: SvgSprite.path(theme_id),
|
|
enable_js_error_reporting: GlobalSetting.enable_js_error_reporting,
|
|
color_scheme_is_dark: dark_color_scheme?,
|
|
user_color_scheme_id: scheme_id,
|
|
user_dark_scheme_id: dark_scheme_id,
|
|
}
|
|
|
|
if Rails.env.development?
|
|
setup_data[:svg_icon_list] = SvgSprite.all_icons(theme_id)
|
|
|
|
setup_data[:debug_preloaded_app_data] = true if ENV["DEBUG_PRELOADED_APP_DATA"]
|
|
setup_data[:mb_last_file_change_id] = MessageBus.last_id("/file-change")
|
|
end
|
|
|
|
if guardian.can_enable_safe_mode? && params["safe_mode"]
|
|
setup_data[:safe_mode] = normalized_safe_mode
|
|
end
|
|
|
|
if SiteSetting.Upload.enable_s3_uploads
|
|
setup_data[:s3_cdn] = SiteSetting.Upload.s3_cdn_url.presence
|
|
setup_data[:s3_base_url] = SiteSetting.Upload.s3_base_url
|
|
end
|
|
|
|
setup_data
|
|
end
|
|
|
|
def get_absolute_image_url(link)
|
|
absolute_url = link
|
|
if link.start_with?("//")
|
|
uri = URI(Discourse.base_url)
|
|
absolute_url = "#{uri.scheme}:#{link}"
|
|
elsif link.start_with?("/uploads/", "/images/", "/user_avatar/")
|
|
absolute_url = "#{Discourse.base_url}#{link}"
|
|
elsif GlobalSetting.relative_url_root && link.start_with?(GlobalSetting.relative_url_root)
|
|
absolute_url = "#{Discourse.base_url_no_prefix}#{link}"
|
|
end
|
|
absolute_url
|
|
end
|
|
|
|
def manifest_url
|
|
# If you want the `manifest_url` to be different for a specific action,
|
|
# in the action set @manifest_url = X. Originally added for chat to add a
|
|
# separate manifest
|
|
@manifest_url || "#{Discourse.base_path}/manifest.webmanifest"
|
|
end
|
|
|
|
def can_sign_up?
|
|
SiteSetting.allow_new_registrations && !SiteSetting.invite_only &&
|
|
!SiteSetting.enable_discourse_connect
|
|
end
|
|
|
|
def rss_creator(user)
|
|
user&.display_name
|
|
end
|
|
|
|
def authentication_data
|
|
return @authentication_data if defined?(@authentication_data)
|
|
|
|
@authentication_data =
|
|
begin
|
|
value = cookies[:authentication_data]
|
|
cookies.delete(:authentication_data, path: Discourse.base_path("/")) if value
|
|
current_user ? nil : value
|
|
end
|
|
end
|
|
end
|