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module ActionController
module Rendering
extend ActiveSupport::Concern
# 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 self.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 || options[:text].presence || ' '
end
private
def _process_format(format)
super
self.content_type ||= format.to_s
end
# Normalize arguments by catching blocks and setting them on :update.
def _normalize_args(action=nil, options={}, &blk) #:nodoc:
options = super
options[:update] = blk if block_given?
options
end
# Normalize both text and status options.
def _normalize_options(options) #:nodoc:
if options.key?(:text) && options[:text].respond_to?(:to_text)
options[:text] = options[:text].to_text
end
if options.delete(:nothing) || (options.key?(:text) && options[:text].nil?)
options[:text] = " "
end
if options[:status]
options[:status] = Rack::Utils.status_code(options[:status])
end
super
end
# Process controller specific options, as status, content-type and location.
def _process_options(options) #:nodoc:
status, content_type, location = options.values_at(:status, :content_type, :location)
self.status = status if status
self.content_type = content_type if content_type
self.headers["Location"] = url_for(location) if location
super
end
end
end
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