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# frozen_string_literal: true
module ActionController
module Rendering
extend ActiveSupport::Concern
RENDER_FORMATS_IN_PRIORITY = [:body, :plain, :html]
module ClassMethods
# Documentation at ActionController::Renderer#render
delegate :render, to: :renderer
# Returns a renderer instance (inherited from ActionController::Renderer)
# for the controller.
attr_reader :renderer
def setup_renderer! # :nodoc:
@renderer = Renderer.for(self)
end
def inherited(klass)
klass.setup_renderer!
super
end
end
# Before processing, set the request formats in current controller formats.
def process_action(*) #:nodoc:
self.formats = request.formats.map(&:ref).compact
super
end
# Check for double render errors and set the content_type after rendering.
def render(*args) #:nodoc:
raise ::AbstractController::DoubleRenderError if response_body
super
end
# Overwrite render_to_string because body can now be set to a Rack body.
def render_to_string(*)
result = super
if result.respond_to?(:each)
string = +""
result.each { |r| string << r }
string
else
result
end
end
def render_to_body(options = {})
super || _render_in_priorities(options) || " "
end
private
def _process_variant(options)
if defined?(request) && !request.nil? && request.variant.present?
options[:variant] = request.variant
end
end
def _render_in_priorities(options)
RENDER_FORMATS_IN_PRIORITY.each do |format|
return options[format] if options.key?(format)
end
nil
end
def _set_html_content_type
self.content_type = Mime[:html].to_s
end
def _set_rendered_content_type(format)
if format && !response.content_type
self.content_type = format.to_s
end
end
# Normalize arguments by catching blocks and setting them on :update.
def _normalize_args(action = nil, options = {}, &blk)
options = super
options[:update] = blk if block_given?
options
end
# Normalize both text and status options.
def _normalize_options(options)
_normalize_text(options)
if options[:html]
options[:html] = ERB::Util.html_escape(options[:html])
end
if options[:status]
options[:status] = Rack::Utils.status_code(options[:status])
end
super
end
def _normalize_text(options)
RENDER_FORMATS_IN_PRIORITY.each do |format|
if options.key?(format) && options[format].respond_to?(:to_text)
options[format] = options[format].to_text
end
end
end
# Process controller specific options, as status, content-type and location.
def _process_options(options)
status, content_type, location = options.values_at(:status, :content_type, :location)
self.status = status if status
self.content_type = content_type if content_type
headers["Location"] = url_for(location) if location
super
end
end
end
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