diff options
Diffstat (limited to 'actionview/lib/action_view/renderer/streaming_template_renderer.rb')
| -rw-r--r-- | actionview/lib/action_view/renderer/streaming_template_renderer.rb | 92 |
1 files changed, 46 insertions, 46 deletions
diff --git a/actionview/lib/action_view/renderer/streaming_template_renderer.rb b/actionview/lib/action_view/renderer/streaming_template_renderer.rb index f38e2764d0..2434250b2d 100644 --- a/actionview/lib/action_view/renderer/streaming_template_renderer.rb +++ b/actionview/lib/action_view/renderer/streaming_template_renderer.rb @@ -1,4 +1,4 @@ -require 'fiber' +require "fiber" module ActionView # == TODO @@ -27,17 +27,17 @@ module ActionView private - # This is the same logging logic as in ShowExceptions middleware. - # TODO Once "exceptron" is in, refactor this piece to simply re-use exceptron. - def log_error(exception) #:nodoc: - logger = ActionView::Base.logger - return unless logger + # This is the same logging logic as in ShowExceptions middleware. + # TODO Once "exceptron" is in, refactor this piece to simply re-use exceptron. + def log_error(exception) #:nodoc: + logger = ActionView::Base.logger + return unless logger - message = "\n#{exception.class} (#{exception.message}):\n" - message << exception.annoted_source_code.to_s if exception.respond_to?(:annoted_source_code) - message << " " << exception.backtrace.join("\n ") - logger.fatal("#{message}\n\n") - end + message = "\n#{exception.class} (#{exception.message}):\n" + message << exception.annoted_source_code.to_s if exception.respond_to?(:annoted_source_code) + message << " " << exception.backtrace.join("\n ") + logger.fatal("#{message}\n\n") + end end # For streaming, instead of rendering a given a template, we return a Body @@ -56,48 +56,48 @@ module ActionView private - def delayed_render(buffer, template, layout, view, locals) - # Wrap the given buffer in the StreamingBuffer and pass it to the - # underlying template handler. Now, every time something is concatenated - # to the buffer, it is not appended to an array, but streamed straight - # to the client. - output = ActionView::StreamingBuffer.new(buffer) - yielder = lambda { |*name| view._layout_for(*name) } - - instrument(:template, :identifier => template.identifier, :layout => layout.try(:virtual_path)) do - fiber = Fiber.new do - if layout - layout.render(view, locals, output, &yielder) - else - # If you don't have a layout, just render the thing - # and concatenate the final result. This is the same - # as a layout with just <%= yield %> - output.safe_concat view._layout_for + def delayed_render(buffer, template, layout, view, locals) + # Wrap the given buffer in the StreamingBuffer and pass it to the + # underlying template handler. Now, every time something is concatenated + # to the buffer, it is not appended to an array, but streamed straight + # to the client. + output = ActionView::StreamingBuffer.new(buffer) + yielder = lambda { |*name| view._layout_for(*name) } + + instrument(:template, identifier: template.identifier, layout: layout.try(:virtual_path)) do + fiber = Fiber.new do + if layout + layout.render(view, locals, output, &yielder) + else + # If you don't have a layout, just render the thing + # and concatenate the final result. This is the same + # as a layout with just <%= yield %> + output.safe_concat view._layout_for + end end - end - # Set the view flow to support streaming. It will be aware - # when to stop rendering the layout because it needs to search - # something in the template and vice-versa. - view.view_flow = StreamingFlow.new(view, fiber) + # Set the view flow to support streaming. It will be aware + # when to stop rendering the layout because it needs to search + # something in the template and vice-versa. + view.view_flow = StreamingFlow.new(view, fiber) - # Yo! Start the fiber! - fiber.resume + # Yo! Start the fiber! + fiber.resume - # If the fiber is still alive, it means we need something - # from the template, so start rendering it. If not, it means - # the layout exited without requiring anything from the template. - if fiber.alive? - content = template.render(view, locals, &yielder) + # If the fiber is still alive, it means we need something + # from the template, so start rendering it. If not, it means + # the layout exited without requiring anything from the template. + if fiber.alive? + content = template.render(view, locals, &yielder) - # Once rendering the template is done, sets its content in the :layout key. - view.view_flow.set(:layout, content) + # Once rendering the template is done, sets its content in the :layout key. + view.view_flow.set(:layout, content) - # In case the layout continues yielding, we need to resume - # the fiber until all yields are handled. - fiber.resume while fiber.alive? + # In case the layout continues yielding, we need to resume + # the fiber until all yields are handled. + fiber.resume while fiber.alive? + end end end - end end end |