52013eac1f
When the Save-Data HTTP header is present, disable high quality (2x pixel density) thumbnails. This is normally set when "Data Saver mode" is enabled on Android, or "Lite mode" is enabled in Chrome. This setting can also be set using the `save_data` URL param or HTTP cookie. This is mainly for testing. The <body> tag has a `current-user-save-data` data attribute that indicates whether save data mode is on. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Save-Data https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/save-data/#the_save-data_request_header https://source.android.com/devices/tech/connect/data-saver
31 lines
1.2 KiB
Ruby
31 lines
1.2 KiB
Ruby
# A global variable containing the current user, the current IP address, the
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# current user's country code, whether safe mode is enabled, and whether
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# save-data mode is enabled.
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#
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# The current user is set during a request by {ApplicationController#set_current_user},
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# which calls {SessionLoader#load}. The current user will not be set outside of
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# the request cycle, for example, during background jobs, cron jobs, or on the
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# console. For this reason, code outside of controllers and views, such as
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# models, shouldn't rely on or assume the current user exists.
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#
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# @see https://api.rubyonrails.org/classes/ActiveSupport/CurrentAttributes.html
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# @see ApplicationController#set_current_user
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# @see SessionLoader#load
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class CurrentUser < ActiveSupport::CurrentAttributes
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attribute :user, :ip_addr, :country, :safe_mode, :save_data
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alias_method :safe_mode?, :safe_mode
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delegate :id, to: :user, allow_nil: true
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delegate_missing_to :user
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# Run a block of code as another user.
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# @param user [User] the user to run as
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# @param ip_addr [String] the IP address to run as
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# @yield the block
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def self.scoped(user, ip_addr = "127.0.0.1", &block)
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set(user: user, ip_addr: ip_addr) do
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yield user
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end
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end
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end
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