mirror of
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synced 2022-11-09 12:12:34 -05:00
924 lines
27 KiB
Ruby
924 lines
27 KiB
Ruby
require 'active_support/core_ext/hash/except'
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require 'active_support/core_ext/object/blank'
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module ActionDispatch
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module Routing
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class Mapper
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class Constraints #:nodoc:
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def self.new(app, constraints, request = Rack::Request)
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if constraints.any?
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super(app, constraints, request)
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else
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app
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end
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end
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def initialize(app, constraints, request)
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@app, @constraints, @request = app, constraints, request
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end
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def call(env)
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req = @request.new(env)
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@constraints.each { |constraint|
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if constraint.respond_to?(:matches?) && !constraint.matches?(req)
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return [ 404, {'X-Cascade' => 'pass'}, [] ]
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elsif constraint.respond_to?(:call) && !constraint.call(req)
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return [ 404, {'X-Cascade' => 'pass'}, [] ]
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end
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}
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@app.call(env)
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end
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end
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class Mapping #:nodoc:
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IGNORE_OPTIONS = [:to, :as, :controller, :action, :via, :on, :constraints, :defaults, :only, :except, :anchor, :shallow, :shallow_path, :shallow_prefix]
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def initialize(set, scope, args)
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@set, @scope = set, scope
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@path, @options = extract_path_and_options(args)
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end
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def to_route
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[ app, conditions, requirements, defaults, @options[:as], @options[:anchor] ]
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end
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private
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def extract_path_and_options(args)
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options = args.extract_options!
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if using_to_shorthand?(args, options)
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path, to = options.find { |name, value| name.is_a?(String) }
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options.merge!(:to => to).delete(path) if path
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else
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path = args.first
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end
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if @scope[:module] && options[:to] && !options[:to].is_a?(Proc)
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if options[:to].to_s.include?("#")
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options[:to] = "#{@scope[:module]}/#{options[:to]}"
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elsif @scope[:controller].nil?
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options[:to] = "#{@scope[:module]}##{options[:to]}"
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end
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end
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path = normalize_path(path)
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path_without_format = path.sub(/\(\.:format\)$/, '')
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if using_match_shorthand?(path_without_format, options)
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options[:to] ||= path_without_format[1..-1].sub(%r{/([^/]*)$}, '#\1')
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options[:as] ||= path_without_format[1..-1].gsub("/", "_")
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end
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[ path, options ]
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end
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# match "account" => "account#index"
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def using_to_shorthand?(args, options)
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args.empty? && options.present?
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end
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# match "account/overview"
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def using_match_shorthand?(path, options)
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path && options.except(:via, :anchor, :to, :as).empty? && path =~ %r{^/[\w\/]+$}
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end
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def normalize_path(path)
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raise ArgumentError, "path is required" if @scope[:path].blank? && path.blank?
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Mapper.normalize_path("#{@scope[:path]}/#{path}")
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end
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def app
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Constraints.new(
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to.respond_to?(:call) ? to : Routing::RouteSet::Dispatcher.new(:defaults => defaults, :module => @scope[:module]),
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blocks,
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@set.request_class
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)
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end
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def conditions
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{ :path_info => @path }.merge(constraints).merge(request_method_condition)
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end
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def requirements
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@requirements ||= (@options[:constraints].is_a?(Hash) ? @options[:constraints] : {}).tap do |requirements|
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requirements.reverse_merge!(@scope[:constraints]) if @scope[:constraints]
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@options.each { |k, v| requirements[k] = v if v.is_a?(Regexp) }
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end
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end
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def defaults
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@defaults ||= (@options[:defaults] || {}).tap do |defaults|
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defaults.merge!(default_controller_and_action)
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defaults.reverse_merge!(@scope[:defaults]) if @scope[:defaults]
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@options.each { |k, v| defaults[k] = v unless v.is_a?(Regexp) || IGNORE_OPTIONS.include?(k.to_sym) }
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end
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end
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def default_controller_and_action
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if to.respond_to?(:call)
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{ }
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else
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defaults = case to
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when String
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controller, action = to.split('#')
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{ :controller => controller, :action => action }
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when Symbol
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{ :action => to.to_s }
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else
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{}
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end
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defaults[:controller] ||= default_controller
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defaults[:action] ||= default_action
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defaults.delete(:controller) if defaults[:controller].blank?
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defaults.delete(:action) if defaults[:action].blank?
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if defaults[:controller].blank? && segment_keys.exclude?("controller")
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raise ArgumentError, "missing :controller"
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end
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if defaults[:action].blank? && segment_keys.exclude?("action")
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raise ArgumentError, "missing :action"
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end
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defaults
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end
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end
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def blocks
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if @options[:constraints].present? && !@options[:constraints].is_a?(Hash)
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block = @options[:constraints]
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else
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block = nil
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end
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((@scope[:blocks] || []) + [ block ]).compact
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end
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def constraints
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@constraints ||= requirements.reject { |k, v| segment_keys.include?(k.to_s) || k == :controller }
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end
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def request_method_condition
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if via = @options[:via]
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via = Array(via).map { |m| m.to_s.upcase }
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{ :request_method => Regexp.union(*via) }
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else
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{ }
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end
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end
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def segment_keys
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@segment_keys ||= Rack::Mount::RegexpWithNamedGroups.new(
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Rack::Mount::Strexp.compile(@path, requirements, SEPARATORS)
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).names
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end
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def to
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@options[:to]
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end
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def default_controller
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if @options[:controller]
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@options[:controller].to_s
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elsif @scope[:controller]
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@scope[:controller].to_s
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end
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end
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def default_action
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if @options[:action]
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@options[:action].to_s
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end
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end
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end
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# Invokes Rack::Mount::Utils.normalize path and ensure that
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# (:locale) becomes (/:locale) instead of /(:locale). Except
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# for root cases, where the latter is the correct one.
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def self.normalize_path(path)
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path = Rack::Mount::Utils.normalize_path(path)
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path.gsub!(%r{/(\(+)/?}, '\1/') unless path =~ %r{^/\(+[^/]+\)$}
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path
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end
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module Base
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def initialize(set) #:nodoc:
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@set = set
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end
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def root(options = {})
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match '/', options.reverse_merge(:as => :root)
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end
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def match(*args)
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mapping = Mapping.new(@set, @scope, args).to_route
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@set.add_route(*mapping)
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self
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end
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def mount(app, options = nil)
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if options
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path = options.delete(:at)
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else
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options = app
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app, path = options.find { |k, v| k.respond_to?(:call) }
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options.delete(app) if app
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end
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raise "A rack application must be specified" unless path
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match(path, options.merge(:to => app, :anchor => false))
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self
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end
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def default_url_options=(options)
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@set.default_url_options = options
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end
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alias_method :default_url_options, :default_url_options=
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end
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module HttpHelpers
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def get(*args, &block)
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map_method(:get, *args, &block)
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end
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def post(*args, &block)
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map_method(:post, *args, &block)
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end
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def put(*args, &block)
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map_method(:put, *args, &block)
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end
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def delete(*args, &block)
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map_method(:delete, *args, &block)
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end
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def redirect(*args, &block)
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options = args.last.is_a?(Hash) ? args.pop : {}
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path = args.shift || block
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path_proc = path.is_a?(Proc) ? path : proc { |params| path % params }
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status = options[:status] || 301
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body = 'Moved Permanently'
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lambda do |env|
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req = Request.new(env)
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params = [req.symbolized_path_parameters]
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params << req if path_proc.arity > 1
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uri = URI.parse(path_proc.call(*params))
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uri.scheme ||= req.scheme
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uri.host ||= req.host
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uri.port ||= req.port unless req.port == 80
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headers = {
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'Location' => uri.to_s,
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'Content-Type' => 'text/html',
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'Content-Length' => body.length.to_s
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}
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[ status, headers, [body] ]
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end
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end
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private
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def map_method(method, *args, &block)
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options = args.extract_options!
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options[:via] = method
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args.push(options)
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match(*args, &block)
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self
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end
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end
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module Scoping
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def initialize(*args) #:nodoc:
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@scope = {}
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super
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end
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def scope(*args)
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options = args.extract_options!
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options = options.dup
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if name_prefix = options.delete(:name_prefix)
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options[:as] ||= name_prefix
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ActiveSupport::Deprecation.warn ":name_prefix was deprecated in the new router syntax. Use :as instead.", caller
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end
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case args.first
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when String
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options[:path] = args.first
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when Symbol
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options[:controller] = args.first
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end
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recover = {}
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options[:constraints] ||= {}
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unless options[:constraints].is_a?(Hash)
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block, options[:constraints] = options[:constraints], {}
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end
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scope_options.each do |option|
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if value = options.delete(option)
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recover[option] = @scope[option]
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@scope[option] = send("merge_#{option}_scope", @scope[option], value)
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end
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end
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recover[:block] = @scope[:blocks]
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@scope[:blocks] = merge_blocks_scope(@scope[:blocks], block)
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recover[:options] = @scope[:options]
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@scope[:options] = merge_options_scope(@scope[:options], options)
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yield
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self
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ensure
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scope_options.each do |option|
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@scope[option] = recover[option] if recover.has_key?(option)
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end
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@scope[:options] = recover[:options]
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@scope[:blocks] = recover[:block]
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end
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def controller(controller)
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scope(controller.to_sym) { yield }
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end
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def namespace(path, options = {})
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path = path.to_s
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options = { :path => path, :as => path, :module => path,
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:shallow_path => path, :shallow_prefix => path }.merge!(options)
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scope(options) { yield }
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end
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def constraints(constraints = {})
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scope(:constraints => constraints) { yield }
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end
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def defaults(defaults = {})
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scope(:defaults => defaults) { yield }
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end
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def match(*args)
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options = args.extract_options!
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options = (@scope[:options] || {}).merge(options)
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if @scope[:as] && !options[:as].blank?
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options[:as] = "#{@scope[:as]}_#{options[:as]}"
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elsif @scope[:as] && options[:as] == ""
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options[:as] = @scope[:as].to_s
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end
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args.push(options)
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super(*args)
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end
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private
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def scope_options
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@scope_options ||= private_methods.grep(/^merge_(.+)_scope$/) { $1.to_sym }
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end
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def merge_path_scope(parent, child)
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Mapper.normalize_path("#{parent}/#{child}")
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end
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def merge_shallow_path_scope(parent, child)
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Mapper.normalize_path("#{parent}/#{child}")
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end
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def merge_as_scope(parent, child)
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parent ? "#{parent}_#{child}" : child
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end
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def merge_shallow_prefix_scope(parent, child)
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parent ? "#{parent}_#{child}" : child
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end
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def merge_module_scope(parent, child)
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parent ? "#{parent}/#{child}" : child
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end
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def merge_controller_scope(parent, child)
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@scope[:module] ? "#{@scope[:module]}/#{child}" : child
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end
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def merge_path_names_scope(parent, child)
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merge_options_scope(parent, child)
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end
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def merge_constraints_scope(parent, child)
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merge_options_scope(parent, child)
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end
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def merge_defaults_scope(parent, child)
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merge_options_scope(parent, child)
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end
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def merge_blocks_scope(parent, child)
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merged = parent ? parent.dup : []
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merged << child if child
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merged
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end
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def merge_options_scope(parent, child)
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(parent || {}).merge(child)
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end
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def merge_shallow_scope(parent, child)
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child ? true : false
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end
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end
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module Resources
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# CANONICAL_ACTIONS holds all actions that does not need a prefix or
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# a path appended since they fit properly in their scope level.
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VALID_ON_OPTIONS = [:new, :collection, :member]
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CANONICAL_ACTIONS = [:index, :create, :new, :show, :update, :destroy]
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RESOURCE_OPTIONS = [:as, :controller, :path]
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class Resource #:nodoc:
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DEFAULT_ACTIONS = [:index, :create, :new, :show, :update, :destroy, :edit]
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attr_reader :controller, :path, :options
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def initialize(entities, options = {})
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@name = entities.to_s
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@path = options.delete(:path) || @name
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@controller = (options.delete(:controller) || @name).to_s
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@as = options.delete(:as)
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@options = options
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end
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def default_actions
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self.class::DEFAULT_ACTIONS
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end
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def name
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@as || @name
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end
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def plural
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name.to_s.pluralize
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end
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def singular
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name.to_s.singularize
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end
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def member_name
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singular
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end
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# Checks for uncountable plurals, and appends "_index" if they're.
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def collection_name
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singular == plural ? "#{plural}_index" : plural
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end
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def resource_scope
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{ :controller => controller }
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end
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def collection_scope
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path
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end
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def member_scope
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"#{path}/:id"
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end
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def new_scope(new_path)
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"#{path}/#{new_path}"
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end
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def nested_scope
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"#{path}/:#{singular}_id"
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end
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end
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class SingletonResource < Resource #:nodoc:
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DEFAULT_ACTIONS = [:show, :create, :update, :destroy, :new, :edit]
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def initialize(entities, options)
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@name = entities.to_s
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@path = options.delete(:path) || @name
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@controller = (options.delete(:controller) || plural).to_s
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@as = options.delete(:as)
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@options = options
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end
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def member_name
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name
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end
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alias :collection_name :member_name
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def member_scope
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path
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end
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alias :nested_scope :member_scope
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end
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def initialize(*args) #:nodoc:
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super
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@scope[:path_names] = @set.resources_path_names
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end
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def resources_path_names(options)
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@scope[:path_names].merge!(options)
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end
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def resource(*resources, &block)
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options = resources.extract_options!
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if apply_common_behavior_for(:resource, resources, options, &block)
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return self
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end
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resource_scope(SingletonResource.new(resources.pop, options)) do
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yield if block_given?
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collection_scope do
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post :create
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end if resource_actions.include?(:create)
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new_scope do
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get :new
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end if resource_actions.include?(:new)
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member_scope do
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get :show if resource_actions.include?(:show)
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put :update if resource_actions.include?(:update)
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delete :destroy if resource_actions.include?(:destroy)
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get :edit if resource_actions.include?(:edit)
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end
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end
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self
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end
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def resources(*resources, &block)
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options = resources.extract_options!
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if apply_common_behavior_for(:resources, resources, options, &block)
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return self
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end
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resource_scope(Resource.new(resources.pop, options)) do
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yield if block_given?
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collection_scope do
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get :index if resource_actions.include?(:index)
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post :create if resource_actions.include?(:create)
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end
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new_scope do
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|
get :new
|
|
end if resource_actions.include?(:new)
|
|
|
|
member_scope do
|
|
get :show if resource_actions.include?(:show)
|
|
put :update if resource_actions.include?(:update)
|
|
delete :destroy if resource_actions.include?(:destroy)
|
|
get :edit if resource_actions.include?(:edit)
|
|
end
|
|
end
|
|
|
|
self
|
|
end
|
|
|
|
def collection
|
|
unless @scope[:scope_level] == :resources
|
|
raise ArgumentError, "can't use collection outside resources scope"
|
|
end
|
|
|
|
collection_scope do
|
|
yield
|
|
end
|
|
end
|
|
|
|
def member
|
|
unless resource_scope?
|
|
raise ArgumentError, "can't use member outside resource(s) scope"
|
|
end
|
|
|
|
member_scope do
|
|
yield
|
|
end
|
|
end
|
|
|
|
def new
|
|
unless resource_scope?
|
|
raise ArgumentError, "can't use new outside resource(s) scope"
|
|
end
|
|
|
|
new_scope do
|
|
yield
|
|
end
|
|
end
|
|
|
|
def nested
|
|
unless resource_scope?
|
|
raise ArgumentError, "can't use nested outside resource(s) scope"
|
|
end
|
|
|
|
with_scope_level(:nested) do
|
|
if shallow?
|
|
with_exclusive_scope do
|
|
if @scope[:shallow_path].blank?
|
|
scope(parent_resource.nested_scope, nested_options) { yield }
|
|
else
|
|
scope(@scope[:shallow_path], :as => @scope[:shallow_prefix]) do
|
|
scope(parent_resource.nested_scope, nested_options) { yield }
|
|
end
|
|
end
|
|
end
|
|
else
|
|
scope(parent_resource.nested_scope, nested_options) { yield }
|
|
end
|
|
end
|
|
end
|
|
|
|
def namespace(path, options = {})
|
|
if resource_scope?
|
|
nested { super }
|
|
else
|
|
super
|
|
end
|
|
end
|
|
|
|
def shallow
|
|
scope(:shallow => true) do
|
|
yield
|
|
end
|
|
end
|
|
|
|
def shallow?
|
|
parent_resource.instance_of?(Resource) && @scope[:shallow]
|
|
end
|
|
|
|
def match(*args)
|
|
options = args.extract_options!.dup
|
|
options[:anchor] = true unless options.key?(:anchor)
|
|
|
|
if args.length > 1
|
|
args.each { |path| match(path, options.dup) }
|
|
return self
|
|
end
|
|
|
|
on = options.delete(:on)
|
|
if VALID_ON_OPTIONS.include?(on)
|
|
args.push(options)
|
|
return send(on){ match(*args) }
|
|
elsif on
|
|
raise ArgumentError, "Unknown scope #{on.inspect} given to :on"
|
|
end
|
|
|
|
if @scope[:scope_level] == :resource
|
|
args.push(options)
|
|
return member { match(*args) }
|
|
end
|
|
|
|
path = options.delete(:path)
|
|
action = args.first
|
|
|
|
if action.is_a?(Symbol)
|
|
path = path_for_action(action, path)
|
|
options[:to] ||= action
|
|
options[:as] = name_for_action(action, options[:as])
|
|
|
|
with_exclusive_scope do
|
|
return super(path, options)
|
|
end
|
|
elsif resource_method_scope?
|
|
path = path_for_custom_action
|
|
options[:as] = name_for_action(options[:as]) if options[:as]
|
|
args.push(options)
|
|
|
|
with_exclusive_scope do
|
|
scope(path) do
|
|
return super
|
|
end
|
|
end
|
|
end
|
|
|
|
if resource_scope?
|
|
raise ArgumentError, "can't define route directly in resource(s) scope"
|
|
end
|
|
|
|
args.push(options)
|
|
super
|
|
end
|
|
|
|
def root(options={})
|
|
if @scope[:scope_level] == :resources
|
|
with_scope_level(:nested) do
|
|
scope(parent_resource.path, :as => parent_resource.collection_name) do
|
|
super(options)
|
|
end
|
|
end
|
|
else
|
|
super(options)
|
|
end
|
|
end
|
|
|
|
protected
|
|
|
|
def parent_resource #:nodoc:
|
|
@scope[:scope_level_resource]
|
|
end
|
|
|
|
def resource_actions
|
|
if only = @scope[:options][:only]
|
|
Array(only).map(&:to_sym)
|
|
elsif except = @scope[:options][:except]
|
|
parent_resource.default_actions - Array(except).map(&:to_sym)
|
|
else
|
|
parent_resource.default_actions
|
|
end
|
|
end
|
|
|
|
def apply_common_behavior_for(method, resources, options, &block)
|
|
if resources.length > 1
|
|
resources.each { |r| send(method, r, options, &block) }
|
|
return true
|
|
end
|
|
|
|
scope_options = options.slice!(*RESOURCE_OPTIONS)
|
|
unless scope_options.empty?
|
|
scope(scope_options) do
|
|
send(method, resources.pop, options, &block)
|
|
end
|
|
return true
|
|
end
|
|
|
|
if resource_scope?
|
|
nested do
|
|
send(method, resources.pop, options, &block)
|
|
end
|
|
return true
|
|
end
|
|
|
|
false
|
|
end
|
|
|
|
def resource_scope?
|
|
[:resource, :resources].include?(@scope[:scope_level])
|
|
end
|
|
|
|
def resource_method_scope?
|
|
[:collection, :member, :new].include?(@scope[:scope_level])
|
|
end
|
|
|
|
def with_exclusive_scope
|
|
begin
|
|
old_name_prefix, old_path = @scope[:as], @scope[:path]
|
|
@scope[:as], @scope[:path] = nil, nil
|
|
|
|
with_scope_level(:exclusive) do
|
|
yield
|
|
end
|
|
ensure
|
|
@scope[:as], @scope[:path] = old_name_prefix, old_path
|
|
end
|
|
end
|
|
|
|
def with_scope_level(kind, resource = parent_resource)
|
|
old, @scope[:scope_level] = @scope[:scope_level], kind
|
|
old_resource, @scope[:scope_level_resource] = @scope[:scope_level_resource], resource
|
|
yield
|
|
ensure
|
|
@scope[:scope_level] = old
|
|
@scope[:scope_level_resource] = old_resource
|
|
end
|
|
|
|
def resource_scope(resource)
|
|
with_scope_level(resource.is_a?(SingletonResource) ? :resource : :resources, resource) do
|
|
scope(parent_resource.resource_scope) do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def new_scope
|
|
with_scope_level(:new) do
|
|
scope(parent_resource.new_scope(action_path(:new))) do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def collection_scope
|
|
with_scope_level(:collection) do
|
|
scope(parent_resource.collection_scope) do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def member_scope
|
|
with_scope_level(:member) do
|
|
scope(parent_resource.member_scope) do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def nested_options
|
|
{}.tap do |options|
|
|
options[:as] = parent_resource.member_name
|
|
options[:constraints] = { "#{parent_resource.singular}_id".to_sym => id_constraint } if id_constraint?
|
|
end
|
|
end
|
|
|
|
def id_constraint?
|
|
@scope[:id].is_a?(Regexp) || (@scope[:constraints] && @scope[:constraints][:id].is_a?(Regexp))
|
|
end
|
|
|
|
def id_constraint
|
|
@scope[:id] || @scope[:constraints][:id]
|
|
end
|
|
|
|
def canonical_action?(action, flag)
|
|
flag && CANONICAL_ACTIONS.include?(action)
|
|
end
|
|
|
|
def shallow_scoping?
|
|
shallow? && @scope[:scope_level] == :member
|
|
end
|
|
|
|
def path_for_action(action, path)
|
|
prefix = shallow_scoping? ?
|
|
"#{@scope[:shallow_path]}/#{parent_resource.path}/:id" : @scope[:path]
|
|
|
|
if canonical_action?(action, path.blank?)
|
|
"#{prefix}(.:format)"
|
|
else
|
|
"#{prefix}/#{action_path(action, path)}(.:format)"
|
|
end
|
|
end
|
|
|
|
def path_for_custom_action
|
|
if shallow_scoping?
|
|
"#{@scope[:shallow_path]}/#{parent_resource.path}/:id"
|
|
else
|
|
@scope[:path]
|
|
end
|
|
end
|
|
|
|
def action_path(name, path = nil)
|
|
path || @scope[:path_names][name.to_sym] || name.to_s
|
|
end
|
|
|
|
def prefix_name_for_action(action, as)
|
|
if as.present?
|
|
"#{as}_"
|
|
elsif as
|
|
""
|
|
elsif !canonical_action?(action, @scope[:scope_level])
|
|
"#{action}_"
|
|
end
|
|
end
|
|
|
|
def name_for_action(action, as=nil)
|
|
prefix = prefix_name_for_action(action, as)
|
|
name_prefix = @scope[:as]
|
|
|
|
if parent_resource
|
|
collection_name = parent_resource.collection_name
|
|
member_name = parent_resource.member_name
|
|
name_prefix = "#{name_prefix}_" if name_prefix.present?
|
|
end
|
|
|
|
case @scope[:scope_level]
|
|
when :collection
|
|
"#{prefix}#{name_prefix}#{collection_name}"
|
|
when :new
|
|
"#{prefix}new_#{name_prefix}#{member_name}"
|
|
else
|
|
if shallow_scoping?
|
|
shallow_prefix = "#{@scope[:shallow_prefix]}_" if @scope[:shallow_prefix].present?
|
|
"#{prefix}#{shallow_prefix}#{member_name}"
|
|
else
|
|
"#{prefix}#{name_prefix}#{member_name}"
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
include Base
|
|
include HttpHelpers
|
|
include Scoping
|
|
include Resources
|
|
end
|
|
end
|
|
end
|