module ActionView # This is the main entry point for rendering. It basically delegates # to other objects like TemplateRenderer and PartialRenderer which # actually renders the template. # # The Renderer will parse the options from the +render+ or +render_body+ # method and render a partial or a template based on the options. The # +TemplateRenderer+ and +PartialRenderer+ objects are wrappers which do all # the setup and logic necessary to render a view and a new object is created # each time +render+ is called. class Renderer attr_accessor :lookup_context def initialize(lookup_context) @lookup_context = lookup_context end # Main render entry point shared by AV and AC. def render(context, options) if options.key?(:partial) render_partial(context, options) else render_template(context, options) end end # Render but returns a valid Rack body. If fibers are defined, we return # a streaming body that renders the template piece by piece. # # Note that partials are not supported to be rendered with streaming, # so in such cases, we just wrap them in an array. def render_body(context, options) if options.key?(:partial) [render_partial(context, options)] else StreamingTemplateRenderer.new(@lookup_context).render(context, options) end end # Direct accessor to template rendering. def render_template(context, options) #:nodoc: TemplateRenderer.new(@lookup_context).render(context, options) end # Direct access to partial rendering. def render_partial(context, options, &block) #:nodoc: PartialRenderer.new(@lookup_context).render(context, options, block) end end end