method

compute_asset_host

rails latest stable - Class: ActionView::Helpers::AssetTagHelper

compute_asset_host(source)

private

Pick an asset host for this source. Returns nil if no host is set, the host if no wildcard is set, the host interpolated with the numbers 0-3 if it contains %d (the number is the source hash mod 4), or the value returned from invoking the proc if it’s a proc or the value from invoking call if it’s an object responding to call.

# File actionpack/lib/action_view/helpers/asset_tag_helper.rb, line 766
        def compute_asset_host(source)
          if host = config.asset_host
            if host.is_a?(Proc) || host.respond_to?(:call)
              case host.is_a?(Proc) ? host.arity : host.method(:call).arity
              when 2
                request = controller.respond_to?(:request) && controller.request
                host.call(source, request)
              else
                host.call(source)
              end
            else
              (host =~ /%d/) ? host % (source.hash % 4) : host
            end
          end
        end

compute_asset_host

Method deprecated or moved

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