method

compute_public_path

v2.1.0 - Show latest stable - 0 notes - Class: ActionView::Helpers::AssetTagHelper

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compute_public_path(source, dir, ext = nil, include_host = true) private

Add the the extension ext if not present. Return full URLs otherwise untouched. Prefix with /dir/ if lacking a leading /. Account for relative URL roots. Rewrite the asset path for cache-busting asset ids. Include asset host, if configured, with the correct request protocol.

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# File actionpack/lib/action_view/helpers/asset_tag_helper.rb, line 461
        def compute_public_path(source, dir, ext = nil, include_host = true)
          has_request = @controller.respond_to?(:request)

          cache_key =
            if has_request
              [ @controller.request.protocol,
                ActionController::Base.asset_host.to_s,
                @controller.request.relative_url_root,
                dir, source, ext, include_host ].join
            else
              [ ActionController::Base.asset_host.to_s,
                dir, source, ext, include_host ].join
            end

          ActionView::Base.computed_public_paths[cache_key] ||=
            begin
              source += ".#{ext}" if ext && File.extname(source).blank? || File.exist?(File.join(ASSETS_DIR, dir, "#{source}.#{ext}"))

              if source =~ %r{^[-a-z]+://}
                source
              else
                source = "/#{dir}/#{source}" unless source[0] == ?/
                if has_request
                  unless source =~ %r{^#{@controller.request.relative_url_root}/}
                    source = "#{@controller.request.relative_url_root}#{source}"
                  end
                end
                source = rewrite_asset_path(source)

                if include_host
                  host = compute_asset_host(source)

                  if has_request && !host.blank? && host !~ %r{^[-a-z]+://}
                    host = "#{@controller.request.protocol}#{host}"
                  end

                  "#{host}#{source}"
                else
                  source
                end
              end
            end
        end

compute_public_path

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