instance method `compute_asset_host`

Ruby on Rails 5.2.8.1

Since v4.0.13

Available in: v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

compute_asset_host(source = "", options = {})

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 call on an object responding to call (proc or otherwise).

Parameters

source opt = ""
options opt = {}

Source

# File actionview/lib/action_view/helpers/asset_url_helper.rb, line 273
      def compute_asset_host(source = "", options = {})
        request = self.request if respond_to?(:request)
        host = options[:host]
        host ||= config.asset_host if defined? config.asset_host

        if host
          if host.respond_to?(:call)
            arity = host.respond_to?(:arity) ? host.arity : host.method(:call).arity
            args = [source]
            args << request if request && (arity > 1 || arity < 0)
            host = host.call(*args)
          elsif host.include?("%d")
            host = host % (Zlib.crc32(source) % 4)
          end
        end

        host ||= request.base_url if request && options[:protocol] == :request
        return unless host

        if URI_REGEXP.match?(host)
          host
        else
          protocol = options[:protocol] || config.default_asset_host_protocol || (request ? :request : :relative)
          case protocol
          when :relative
            "//#{host}"
          when :request
            "#{request.protocol}#{host}"
          else
            "#{protocol}://#{host}"
          end
        end
      end

Defined in actionview/lib/action_view/helpers/asset_url_helper.rb line 273 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionView::Helpers::AssetUrlHelper

Signature

Parameters