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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.
class Renderer
attr_accessor :lookup_context, :controller
def initialize(lookup_context, controller)
@lookup_context = lookup_context
@controller = controller
end
def render(context, options = {}, locals = {}, &block)
case options
when Hash
if block_given?
_render_partial(context, options.merge(:partial => options[:layout]), &block)
elsif options.key?(:partial)
_render_partial(context, options)
else
_render_template(context, options)
end
else
_render_partial(context, :partial => options, :locals => locals)
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, @controller).render(context, options)
end
end
private
def _render_template(context, options) #:nodoc:
_template_renderer.render(context, options)
end
def _template_renderer #:nodoc:
@_template_renderer ||= TemplateRenderer.new(@lookup_context, @controller)
end
def _render_partial(context, options, &block) #:nodoc:
_partial_renderer.render(context, options, block)
end
def _partial_renderer #:nodoc:
@_partial_renderer ||= PartialRenderer.new(@lookup_context, @controller)
end
end
end
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