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require "action_controller/abstract/logger"
module AbstractController
class AbstractControllerError < StandardError; end
class DoubleRenderError < AbstractControllerError
DEFAULT_MESSAGE = "Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like \"redirect_to(...) and return\"."
def initialize(message = nil)
super(message || DEFAULT_MESSAGE)
end
end
module Renderer
depends_on AbstractController::Logger
setup do
attr_internal :formats
extlib_inheritable_accessor :_view_paths
self._view_paths ||= ActionView::PathSet.new
end
def _action_view
@_action_view ||= ActionView::Base.new(self.class.view_paths, {}, self)
end
def render(options = {})
if response_body
raise AbstractController::DoubleRenderError, "OMG"
end
self.response_body = render_to_body(options)
end
# Raw rendering of a template to a Rack-compatible body.
# ====
# @option _prefix<String> The template's path prefix
# @option _layout<String> The relative path to the layout template to use
#
# :api: plugin
def render_to_body(options = {})
name = options[:_template_name] || action_name
options[:_template] ||= view_paths.find_by_parts(name.to_s, {:formats => formats}, options[:_prefix])
_render_template(options[:_template], options)
end
# Raw rendering of a template to a string.
# ====
# @option _prefix<String> The template's path prefix
# @option _layout<String> The relative path to the layout template to use
#
# :api: plugin
def render_to_string(options = {})
AbstractController::Renderer.body_to_s(render_to_body(options))
end
def _render_template(template, options)
_action_view._render_template_with_layout(template)
end
def view_paths() _view_paths end
# Return a string representation of a Rack-compatible response body.
def self.body_to_s(body)
if body.respond_to?(:to_str)
body
else
strings = []
body.each { |part| strings << part.to_s }
body.close if body.respond_to?(:close)
strings.join
end
end
module ClassMethods
def append_view_path(path)
self.view_paths << path
end
def view_paths
self._view_paths
end
def view_paths=(paths)
self._view_paths = paths.is_a?(ActionView::PathSet) ?
paths : ActionView::Base.process_view_paths(paths)
end
end
end
end
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