diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/routing/mapper.rb')
| -rw-r--r-- | actionpack/lib/action_dispatch/routing/mapper.rb | 1077 |
1 files changed, 800 insertions, 277 deletions
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb index c118c72440..14c424f24b 100644 --- a/actionpack/lib/action_dispatch/routing/mapper.rb +++ b/actionpack/lib/action_dispatch/routing/mapper.rb @@ -1,6 +1,8 @@ require 'erb' require 'active_support/core_ext/hash/except' require 'active_support/core_ext/object/blank' +require 'active_support/inflector' +require 'action_dispatch/routing/redirection' module ActionDispatch module Routing @@ -20,27 +22,37 @@ module ActionDispatch @app, @constraints, @request = app, constraints, request end - def call(env) + def matches?(env) req = @request.new(env) @constraints.each { |constraint| if constraint.respond_to?(:matches?) && !constraint.matches?(req) - return [ 404, {'X-Cascade' => 'pass'}, [] ] - elsif constraint.respond_to?(:call) && !constraint.call(req) - return [ 404, {'X-Cascade' => 'pass'}, [] ] + return false + elsif constraint.respond_to?(:call) && !constraint.call(*constraint_args(constraint, req)) + return false end } - @app.call(env) + return true + end + + def call(env) + matches?(env) ? @app.call(env) : [ 404, {'X-Cascade' => 'pass'}, [] ] end + + private + def constraint_args(constraint, request) + constraint.arity == 1 ? [request] : [request.symbolized_path_parameters, request] + end end class Mapping #:nodoc: IGNORE_OPTIONS = [:to, :as, :via, :on, :constraints, :defaults, :only, :except, :anchor, :shallow, :shallow_path, :shallow_prefix] - def initialize(set, scope, args) - @set, @scope = set, scope - @path, @options = extract_path_and_options(args) + def initialize(set, scope, path, options) + @set, @scope = set, scope + @options = (@scope[:options] || {}).merge(options) + @path = normalize_path(path) normalize_options! end @@ -49,28 +61,6 @@ module ActionDispatch end private - def extract_path_and_options(args) - options = args.extract_options! - - if using_to_shorthand?(args, options) - path, to = options.find { |name, value| name.is_a?(String) } - options.merge!(:to => to).delete(path) if path - else - path = args.first - end - - if path.match(':controller') - raise ArgumentError, ":controller segment is not allowed within a namespace block" if @scope[:module] - - # Add a default constraint for :controller path segments that matches namespaced - # controllers with default routes like :controller/:action/:id(.:format), e.g: - # GET /admin/products/show/1 - # => { :controller => 'admin/products', :action => 'show', :id => '1' } - options.reverse_merge!(:controller => /.+?/) - end - - [ normalize_path(path), options ] - end def normalize_options! path_without_format = @path.sub(/\(\.:format\)$/, '') @@ -78,15 +68,21 @@ module ActionDispatch if using_match_shorthand?(path_without_format, @options) to_shorthand = @options[:to].blank? @options[:to] ||= path_without_format[1..-1].sub(%r{/([^/]*)$}, '#\1') - @options[:as] ||= path_without_format[1..-1].gsub("/", "_") end @options.merge!(default_controller_and_action(to_shorthand)) - end - # match "account" => "account#index" - def using_to_shorthand?(args, options) - args.empty? && options.present? + requirements.each do |name, requirement| + # segment_keys.include?(k.to_s) || k == :controller + next unless Regexp === requirement && !constraints[name] + + if requirement.source =~ %r{\A(\\A|\^)|(\\Z|\\z|\$)\Z} + raise ArgumentError, "Regexp anchor characters are not allowed in routing requirements: #{requirement.inspect}" + end + if requirement.multiline? + raise ArgumentError, "Regexp multiline option not allowed in routing requirements: #{requirement.inspect}" + end + end end # match "account/overview" @@ -95,8 +91,27 @@ module ActionDispatch end def normalize_path(path) - raise ArgumentError, "path is required" if @scope[:path].blank? && path.blank? - Mapper.normalize_path("#{@scope[:path]}/#{path}") + raise ArgumentError, "path is required" if path.blank? + path = Mapper.normalize_path(path) + + if path.match(':controller') + raise ArgumentError, ":controller segment is not allowed within a namespace block" if @scope[:module] + + # Add a default constraint for :controller path segments that matches namespaced + # controllers with default routes like :controller/:action/:id(.:format), e.g: + # GET /admin/products/show/1 + # => { :controller => 'admin/products', :action => 'show', :id => '1' } + @options.reverse_merge!(:controller => /.+?/) + end + + if @options[:format] == false + @options.delete(:format) + path + elsif path.include?(":format") || path.end_with?('/') || path.match(/^\/?\*/) + path + else + "#{path}(.:format)" + end end def app @@ -142,6 +157,10 @@ module ActionDispatch controller = [@scope[:module], controller].compact.join("/").presence end + if controller.is_a?(String) && controller =~ %r{\A/} + raise ArgumentError, "controller name should not start with a slash" + end + controller = controller.to_s unless controller.is_a?(Regexp) action = action.to_s unless action.is_a?(Regexp) @@ -153,21 +172,21 @@ module ActionDispatch raise ArgumentError, "missing :action" end - { :controller => controller, :action => action }.tap do |hash| - hash.delete(:controller) if hash[:controller].blank? - hash.delete(:action) if hash[:action].blank? - end + hash = {} + hash[:controller] = controller unless controller.blank? + hash[:action] = action unless action.blank? + hash end end def blocks + block = @scope[:blocks] || [] + if @options[:constraints].present? && !@options[:constraints].is_a?(Hash) - block = @options[:constraints] - else - block = nil + block << @options[:constraints] end - ((@scope[:blocks] || []) + [ block ]).compact + block end def constraints @@ -176,8 +195,8 @@ module ActionDispatch def request_method_condition if via = @options[:via] - via = Array(via).map { |m| m.to_s.upcase } - { :request_method => Regexp.union(*via) } + list = Array(via).map { |m| m.to_s.dasherize.upcase } + { :request_method => list } else { } end @@ -219,21 +238,165 @@ module ActionDispatch path end - module Base - def initialize(set) #:nodoc: - @set = set - end + def self.normalize_name(name) + normalize_path(name)[1..-1].gsub("/", "_") + end + module Base + # You can specify what Rails should route "/" to with the root method: + # + # root :to => 'pages#main' + # + # For options, see +match+, as +root+ uses it internally. + # + # You should put the root route at the top of <tt>config/routes.rb</tt>, + # because this means it will be matched first. As this is the most popular route + # of most Rails applications, this is beneficial. def root(options = {}) match '/', options.reverse_merge(:as => :root) end - def match(*args) - mapping = Mapping.new(@set, @scope, args).to_route - @set.add_route(*mapping) + # Matches a url pattern to one or more routes. Any symbols in a pattern + # are interpreted as url query parameters and thus available as +params+ + # in an action: + # + # # sets :controller, :action and :id in params + # match ':controller/:action/:id' + # + # Two of these symbols are special, +:controller+ maps to the controller + # and +:action+ to the controller's action. A pattern can also map + # wildcard segments (globs) to params: + # + # match 'songs/*category/:title' => 'songs#show' + # + # # 'songs/rock/classic/stairway-to-heaven' sets + # # params[:category] = 'rock/classic' + # # params[:title] = 'stairway-to-heaven' + # + # When a pattern points to an internal route, the route's +:action+ and + # +:controller+ should be set in options or hash shorthand. Examples: + # + # match 'photos/:id' => 'photos#show' + # match 'photos/:id', :to => 'photos#show' + # match 'photos/:id', :controller => 'photos', :action => 'show' + # + # A pattern can also point to a +Rack+ endpoint i.e. anything that + # responds to +call+: + # + # match 'photos/:id' => lambda {|hash| [200, {}, "Coming soon" } + # match 'photos/:id' => PhotoRackApp + # # Yes, controller actions are just rack endpoints + # match 'photos/:id' => PhotosController.action(:show) + # + # === Options + # + # Any options not seen here are passed on as params with the url. + # + # [:controller] + # The route's controller. + # + # [:action] + # The route's action. + # + # [:path] + # The path prefix for the routes. + # + # [:module] + # The namespace for :controller. + # + # match 'path' => 'c#a', :module => 'sekret', :controller => 'posts' + # #=> Sekret::PostsController + # + # See <tt>Scoping#namespace</tt> for its scope equivalent. + # + # [:as] + # The name used to generate routing helpers. + # + # [:via] + # Allowed HTTP verb(s) for route. + # + # match 'path' => 'c#a', :via => :get + # match 'path' => 'c#a', :via => [:get, :post] + # + # [:to] + # Points to a +Rack+ endpoint. Can be an object that responds to + # +call+ or a string representing a controller's action. + # + # match 'path', :to => 'controller#action' + # match 'path', :to => lambda { [200, {}, "Success!"] } + # match 'path', :to => RackApp + # + # [:on] + # Shorthand for wrapping routes in a specific RESTful context. Valid + # values are :member, :collection, and :new. Only use within + # <tt>resource(s)</tt> block. For example: + # + # resource :bar do + # match 'foo' => 'c#a', :on => :member, :via => [:get, :post] + # end + # + # Is equivalent to: + # + # resource :bar do + # member do + # match 'foo' => 'c#a', :via => [:get, :post] + # end + # end + # + # [:constraints] + # Constrains parameters with a hash of regular expressions or an + # object that responds to #matches? + # + # match 'path/:id', :constraints => { :id => /[A-Z]\d{5}/ } + # + # class Blacklist + # def matches?(request) request.remote_ip == '1.2.3.4' end + # end + # match 'path' => 'c#a', :constraints => Blacklist.new + # + # See <tt>Scoping#constraints</tt> for more examples with its scope + # equivalent. + # + # [:defaults] + # Sets defaults for parameters + # + # # Sets params[:format] to 'jpg' by default + # match 'path' => 'c#a', :defaults => { :format => 'jpg' } + # + # See <tt>Scoping#defaults</tt> for its scope equivalent. + # + # [:anchor] + # Boolean to anchor a #match pattern. Default is true. When set to + # false, the pattern matches any request prefixed with the given path. + # + # # Matches any request starting with 'path' + # match 'path' => 'c#a', :anchor => false + def match(path, options=nil) + mapping = Mapping.new(@set, @scope, path, options || {}) + app, conditions, requirements, defaults, as, anchor = mapping.to_route + @set.add_route(app, conditions, requirements, defaults, as, anchor) self end + # Mount a Rack-based application to be used within the application. + # + # mount SomeRackApp, :at => "some_route" + # + # Alternatively: + # + # mount(SomeRackApp => "some_route") + # + # For options, see +match+, as +mount+ uses it internally. + # + # All mounted applications come with routing helpers to access them. + # These are named after the class specified, so for the above example + # the helper is either +some_rack_app_path+ or +some_rack_app_url+. + # To customize this helper's name, use the +:as+ option: + # + # mount(SomeRackApp => "some_route", :as => "exciting") + # + # This will generate the +exciting_path+ and +exciting_url+ helpers + # which can be used to navigate to this mounted app. def mount(app, options = nil) if options path = options.delete(:at) @@ -245,7 +408,11 @@ module ActionDispatch raise "A rack application must be specified" unless path - match(path, options.merge(:to => app, :anchor => false)) + options[:as] ||= app_name(app) + + match(path, options.merge(:to => app, :anchor => false, :format => false)) + + define_generate_prefix(app, options[:as]) self end @@ -253,55 +420,83 @@ module ActionDispatch @set.default_url_options = options end alias_method :default_url_options, :default_url_options= + + def with_default_scope(scope, &block) + scope(scope) do + instance_exec(&block) + end + end + + private + def app_name(app) + return unless app.respond_to?(:routes) + + if app.respond_to?(:railtie_name) + app.railtie_name + else + class_name = app.class.is_a?(Class) ? app.name : app.class.name + ActiveSupport::Inflector.underscore(class_name).gsub("/", "_") + end + end + + def define_generate_prefix(app, name) + return unless app.respond_to?(:routes) && app.routes.respond_to?(:define_mounted_helper) + + _route = @set.named_routes.routes[name.to_sym] + _routes = @set + app.routes.define_mounted_helper(name) + app.routes.class_eval do + define_method :_generate_prefix do |options| + prefix_options = options.slice(*_route.segment_keys) + # we must actually delete prefix segment keys to avoid passing them to next url_for + _route.segment_keys.each { |k| options.delete(k) } + _routes.url_helpers.send("#{name}_path", prefix_options) + end + end + end end module HttpHelpers + # Define a route that only recognizes HTTP GET. + # For supported arguments, see <tt>Base#match</tt>. + # + # Example: + # + # get 'bacon', :to => 'food#bacon' def get(*args, &block) map_method(:get, *args, &block) end + # Define a route that only recognizes HTTP POST. + # For supported arguments, see <tt>Base#match</tt>. + # + # Example: + # + # post 'bacon', :to => 'food#bacon' def post(*args, &block) map_method(:post, *args, &block) end + # Define a route that only recognizes HTTP PUT. + # For supported arguments, see <tt>Base#match</tt>. + # + # Example: + # + # put 'bacon', :to => 'food#bacon' def put(*args, &block) map_method(:put, *args, &block) end + # Define a route that only recognizes HTTP PUT. + # For supported arguments, see <tt>Base#match</tt>. + # + # Example: + # + # delete 'broccoli', :to => 'food#broccoli' def delete(*args, &block) map_method(:delete, *args, &block) end - def redirect(*args, &block) - options = args.last.is_a?(Hash) ? args.pop : {} - - path = args.shift || block - path_proc = path.is_a?(Proc) ? path : proc { |params| path % params } - status = options[:status] || 301 - - lambda do |env| - req = Request.new(env) - - params = [req.symbolized_path_parameters] - params << req if path_proc.arity > 1 - - uri = URI.parse(path_proc.call(*params)) - uri.scheme ||= req.scheme - uri.host ||= req.host - uri.port ||= req.port unless req.port == 80 - - body = %(<html><body>You are being <a href="#{ERB::Util.h(uri.to_s)}">redirected</a>.</body></html>) - - headers = { - 'Location' => uri.to_s, - 'Content-Type' => 'text/html', - 'Content-Length' => body.length.to_s - } - - [ status, headers, [body] ] - end - end - private def map_method(method, *args, &block) options = args.extract_options! @@ -312,28 +507,98 @@ module ActionDispatch end end + # You may wish to organize groups of controllers under a namespace. + # Most commonly, you might group a number of administrative controllers + # under an +admin+ namespace. You would place these controllers under + # the app/controllers/admin directory, and you can group them together + # in your router: + # + # namespace "admin" do + # resources :posts, :comments + # end + # + # This will create a number of routes for each of the posts and comments + # controller. For Admin::PostsController, Rails will create: + # + # GET /admin/posts + # GET /admin/posts/new + # POST /admin/posts + # GET /admin/posts/1 + # GET /admin/posts/1/edit + # PUT /admin/posts/1 + # DELETE /admin/posts/1 + # + # If you want to route /posts (without the prefix /admin) to + # Admin::PostsController, you could use + # + # scope :module => "admin" do + # resources :posts + # end + # + # or, for a single case + # + # resources :posts, :module => "admin" + # + # If you want to route /admin/posts to PostsController + # (without the Admin:: module prefix), you could use + # + # scope "/admin" do + # resources :posts + # end + # + # or, for a single case + # + # resources :posts, :path => "/admin" + # + # In each of these cases, the named routes remain the same as if you did + # not use scope. In the last case, the following paths map to + # PostsController: + # + # GET /admin/posts + # GET /admin/posts/new + # POST /admin/posts + # GET /admin/posts/1 + # GET /admin/posts/1/edit + # PUT /admin/posts/1 + # DELETE /admin/posts/1 module Scoping - def initialize(*args) #:nodoc: - @scope = {} - super - end - + # Scopes a set of routes to the given default options. + # + # Take the following route definition as an example: + # + # scope :path => ":account_id", :as => "account" do + # resources :projects + # end + # + # This generates helpers such as +account_projects_path+, just like +resources+ does. + # The difference here being that the routes generated are like /rails/projects/2, + # rather than /accounts/rails/projects/2. + # + # === Options + # + # Takes same options as <tt>Base#match</tt> and <tt>Resources#resources</tt>. + # + # === Examples + # + # # route /posts (without the prefix /admin) to Admin::PostsController + # scope :module => "admin" do + # resources :posts + # end + # + # # prefix the posts resource's requests with '/admin' + # scope :path => "/admin" do + # resources :posts + # end + # + # # prefix the routing helper name: sekret_posts_path instead of posts_path + # scope :as => "sekret" do + # resources :posts + # end def scope(*args) options = args.extract_options! options = options.dup - if name_prefix = options.delete(:name_prefix) - options[:as] ||= name_prefix - ActiveSupport::Deprecation.warn ":name_prefix was deprecated in the new router syntax. Use :as instead.", caller - end - - case args.first - when String - options[:path] = args.first - when Symbol - options[:controller] = args.first - end - + options[:path] = args.first if args.first.is_a?(String) recover = {} options[:constraints] ||= {} @@ -365,10 +630,57 @@ module ActionDispatch @scope[:blocks] = recover[:block] end - def controller(controller) - scope(controller.to_sym) { yield } + # Scopes routes to a specific controller + # + # Example: + # controller "food" do + # match "bacon", :action => "bacon" + # end + def controller(controller, options={}) + options[:controller] = controller + scope(options) { yield } end + # Scopes routes to a specific namespace. For example: + # + # namespace :admin do + # resources :posts + # end + # + # This generates the following routes: + # + # admin_posts GET /admin/posts(.:format) {:action=>"index", :controller=>"admin/posts"} + # admin_posts POST /admin/posts(.:format) {:action=>"create", :controller=>"admin/posts"} + # new_admin_post GET /admin/posts/new(.:format) {:action=>"new", :controller=>"admin/posts"} + # edit_admin_post GET /admin/posts/:id/edit(.:format) {:action=>"edit", :controller=>"admin/posts"} + # admin_post GET /admin/posts/:id(.:format) {:action=>"show", :controller=>"admin/posts"} + # admin_post PUT /admin/posts/:id(.:format) {:action=>"update", :controller=>"admin/posts"} + # admin_post DELETE /admin/posts/:id(.:format) {:action=>"destroy", :controller=>"admin/posts"} + # + # === Options + # + # The +:path+, +:as+, +:module+, +:shallow_path+ and +:shallow_prefix+ + # options all default to the name of the namespace. + # + # For options, see <tt>Base#match</tt>. For +:shallow_path+ option, see + # <tt>Resources#resources</tt>. + # + # === Examples + # + # # accessible through /sekret/posts rather than /admin/posts + # namespace :admin, :path => "sekret" do + # resources :posts + # end + # + # # maps to Sekret::PostsController rather than Admin::PostsController + # namespace :admin, :module => "sekret" do + # resources :posts + # end + # + # # generates sekret_posts_path rather than admin_posts_path + # namespace :admin, :as => "sekret" do + # resources :posts + # end def namespace(path, options = {}) path = path.to_s options = { :path => path, :as => path, :module => path, @@ -376,95 +688,178 @@ module ActionDispatch scope(options) { yield } end + # === Parameter Restriction + # Allows you to constrain the nested routes based on a set of rules. + # For instance, in order to change the routes to allow for a dot character in the +id+ parameter: + # + # constraints(:id => /\d+\.\d+) do + # resources :posts + # end + # + # Now routes such as +/posts/1+ will no longer be valid, but +/posts/1.1+ will be. + # The +id+ parameter must match the constraint passed in for this example. + # + # You may use this to also restrict other parameters: + # + # resources :posts do + # constraints(:post_id => /\d+\.\d+) do + # resources :comments + # end + # + # === Restricting based on IP + # + # Routes can also be constrained to an IP or a certain range of IP addresses: + # + # constraints(:ip => /192.168.\d+.\d+/) do + # resources :posts + # end + # + # Any user connecting from the 192.168.* range will be able to see this resource, + # where as any user connecting outside of this range will be told there is no such route. + # + # === Dynamic request matching + # + # Requests to routes can be constrained based on specific criteria: + # + # constraints(lambda { |req| req.env["HTTP_USER_AGENT"] =~ /iPhone/ }) do + # resources :iphones + # end + # + # You are able to move this logic out into a class if it is too complex for routes. + # This class must have a +matches?+ method defined on it which either returns +true+ + # if the user should be given access to that route, or +false+ if the user should not. + # + # class Iphone + # def self.matches(request) + # request.env["HTTP_USER_AGENT"] =~ /iPhone/ + # end + # end + # + # An expected place for this code would be +lib/constraints+. + # + # This class is then used like this: + # + # constraints(Iphone) do + # resources :iphones + # end def constraints(constraints = {}) scope(:constraints => constraints) { yield } end + # Allows you to set default parameters for a route, such as this: + # defaults :id => 'home' do + # match 'scoped_pages/(:id)', :to => 'pages#show' + # end + # Using this, the +:id+ parameter here will default to 'home'. def defaults(defaults = {}) scope(:defaults => defaults) { yield } end - def match(*args) - options = args.extract_options! - - options = (@scope[:options] || {}).merge(options) - - if @scope[:as] && !options[:as].blank? - options[:as] = "#{@scope[:as]}_#{options[:as]}" - elsif @scope[:as] && options[:as] == "" - options[:as] = @scope[:as].to_s - end - - args.push(options) - super(*args) - end - private - def scope_options + def scope_options #:nodoc: @scope_options ||= private_methods.grep(/^merge_(.+)_scope$/) { $1.to_sym } end - def merge_path_scope(parent, child) + def merge_path_scope(parent, child) #:nodoc: Mapper.normalize_path("#{parent}/#{child}") end - def merge_shallow_path_scope(parent, child) + def merge_shallow_path_scope(parent, child) #:nodoc: Mapper.normalize_path("#{parent}/#{child}") end - def merge_as_scope(parent, child) + def merge_as_scope(parent, child) #:nodoc: parent ? "#{parent}_#{child}" : child end - def merge_shallow_prefix_scope(parent, child) + def merge_shallow_prefix_scope(parent, child) #:nodoc: parent ? "#{parent}_#{child}" : child end - def merge_module_scope(parent, child) + def merge_module_scope(parent, child) #:nodoc: parent ? "#{parent}/#{child}" : child end - def merge_controller_scope(parent, child) + def merge_controller_scope(parent, child) #:nodoc: child end - def merge_path_names_scope(parent, child) + def merge_path_names_scope(parent, child) #:nodoc: merge_options_scope(parent, child) end - def merge_constraints_scope(parent, child) + def merge_constraints_scope(parent, child) #:nodoc: merge_options_scope(parent, child) end - def merge_defaults_scope(parent, child) + def merge_defaults_scope(parent, child) #:nodoc: merge_options_scope(parent, child) end - def merge_blocks_scope(parent, child) + def merge_blocks_scope(parent, child) #:nodoc: merged = parent ? parent.dup : [] merged << child if child merged end - def merge_options_scope(parent, child) + def merge_options_scope(parent, child) #:nodoc: (parent || {}).except(*override_keys(child)).merge(child) end - def merge_shallow_scope(parent, child) + def merge_shallow_scope(parent, child) #:nodoc: child ? true : false end - def override_keys(child) + def override_keys(child) #:nodoc: child.key?(:only) || child.key?(:except) ? [:only, :except] : [] end end + # Resource routing allows you to quickly declare all of the common routes + # for a given resourceful controller. Instead of declaring separate routes + # for your +index+, +show+, +new+, +edit+, +create+, +update+ and +destroy+ + # actions, a resourceful route declares them in a single line of code: + # + # resources :photos + # + # Sometimes, you have a resource that clients always look up without + # referencing an ID. A common example, /profile always shows the profile of + # the currently logged in user. In this case, you can use a singular resource + # to map /profile (rather than /profile/:id) to the show action. + # + # resource :profile + # + # It's common to have resources that are logically children of other + # resources: + # + # resources :magazines do + # resources :ads + # end + # + # You may wish to organize groups of controllers under a namespace. Most + # commonly, you might group a number of administrative controllers under + # an +admin+ namespace. You would place these controllers under the + # app/controllers/admin directory, and you can group them together in your + # router: + # + # namespace "admin" do + # resources :posts, :comments + # end + # + # By default the :id parameter doesn't accept dots. If you need to + # use dots as part of the :id parameter add a constraint which + # overrides this restriction, e.g: + # + # resources :articles, :id => /[^\/]+/ + # + # This allows any character other than a slash as part of your :id. + # module Resources # CANONICAL_ACTIONS holds all actions that does not need a prefix or # a path appended since they fit properly in their scope level. - VALID_ON_OPTIONS = [:new, :collection, :member] - CANONICAL_ACTIONS = [:index, :create, :new, :show, :update, :destroy] - RESOURCE_OPTIONS = [:as, :controller, :path, :only, :except] + VALID_ON_OPTIONS = [:new, :collection, :member] + RESOURCE_OPTIONS = [:as, :controller, :path, :only, :except] + CANONICAL_ACTIONS = %w(index create new show update destroy) class Resource #:nodoc: DEFAULT_ACTIONS = [:index, :create, :new, :show, :update, :destroy, :edit] @@ -473,7 +868,7 @@ module ActionDispatch def initialize(entities, options = {}) @name = entities.to_s - @path = options.delete(:path) || @name + @path = (options.delete(:path) || @name).to_s @controller = (options.delete(:controller) || @name).to_s @as = options.delete(:as) @options = options @@ -498,18 +893,17 @@ module ActionDispatch end def plural - name.to_s.pluralize + @plural ||= name.to_s end def singular - name.to_s.singularize + @singular ||= name.to_s.singularize end - def member_name - singular - end + alias :member_name :singular - # Checks for uncountable plurals, and appends "_index" if they're. + # Checks for uncountable plurals, and appends "_index" if the plural + # and singular form are the same. def collection_name singular == plural ? "#{plural}_index" : plural end @@ -518,9 +912,7 @@ module ActionDispatch { :controller => controller } end - def collection_scope - path - end + alias :collection_scope :path def member_scope "#{path}/:id" @@ -540,33 +932,54 @@ module ActionDispatch DEFAULT_ACTIONS = [:show, :create, :update, :destroy, :new, :edit] def initialize(entities, options) + @as = nil @name = entities.to_s - @path = options.delete(:path) || @name + @path = (options.delete(:path) || @name).to_s @controller = (options.delete(:controller) || plural).to_s @as = options.delete(:as) @options = options end - def member_name - name + def plural + @plural ||= name.to_s.pluralize end - alias :collection_name :member_name - def member_scope - path + def singular + @singular ||= name.to_s end - alias :nested_scope :member_scope - end - def initialize(*args) #:nodoc: - super - @scope[:path_names] = @set.resources_path_names + alias :member_name :singular + alias :collection_name :singular + + alias :member_scope :path + alias :nested_scope :path end def resources_path_names(options) @scope[:path_names].merge!(options) end + # Sometimes, you have a resource that clients always look up without + # referencing an ID. A common example, /profile always shows the + # profile of the currently logged in user. In this case, you can use + # a singular resource to map /profile (rather than /profile/:id) to + # the show action: + # + # resource :geocoder + # + # creates six different routes in your application, all mapping to + # the GeoCoders controller (note that the controller is named after + # the plural): + # + # GET /geocoder/new + # POST /geocoder + # GET /geocoder + # GET /geocoder/edit + # PUT /geocoder + # DELETE /geocoder + # + # === Options + # Takes same options as +resources+. def resource(*resources, &block) options = resources.extract_options! @@ -577,25 +990,121 @@ module ActionDispatch resource_scope(SingletonResource.new(resources.pop, options)) do yield if block_given? - collection_scope do + collection do post :create end if parent_resource.actions.include?(:create) - new_scope do + new do get :new end if parent_resource.actions.include?(:new) - member_scope do + member do + get :edit if parent_resource.actions.include?(:edit) get :show if parent_resource.actions.include?(:show) put :update if parent_resource.actions.include?(:update) delete :destroy if parent_resource.actions.include?(:destroy) - get :edit if parent_resource.actions.include?(:edit) end end self end + # In Rails, a resourceful route provides a mapping between HTTP verbs + # and URLs and controller actions. By convention, each action also maps + # to particular CRUD operations in a database. A single entry in the + # routing file, such as + # + # resources :photos + # + # creates seven different routes in your application, all mapping to + # the Photos controller: + # + # GET /photos/new + # POST /photos + # GET /photos/:id + # GET /photos/:id/edit + # PUT /photos/:id + # DELETE /photos/:id + # + # Resources can also be nested infinitely by using this block syntax: + # + # resources :photos do + # resources :comments + # end + # + # This generates the following comments routes: + # + # GET /photos/:id/comments/new + # POST /photos/:id/comments + # GET /photos/:id/comments/:id + # GET /photos/:id/comments/:id/edit + # PUT /photos/:id/comments/:id + # DELETE /photos/:id/comments/:id + # + # === Options + # Takes same options as <tt>Base#match</tt> as well as: + # + # [:path_names] + # Allows you to change the paths of the seven default actions. + # Paths not specified are not changed. + # + # resources :posts, :path_names => { :new => "brand_new" } + # + # The above example will now change /posts/new to /posts/brand_new + # + # [:only] + # Only generate routes for the given actions. + # + # resources :cows, :only => :show + # resources :cows, :only => [:show, :index] + # + # [:except] + # Generate all routes except for the given actions. + # + # resources :cows, :except => :show + # resources :cows, :except => [:show, :index] + # + # [:shallow] + # Generates shallow routes for nested resource(s). When placed on a parent resource, + # generates shallow routes for all nested resources. + # + # resources :posts, :shallow => true do + # resources :comments + # end + # + # Is the same as: + # + # resources :posts do + # resources :comments + # end + # resources :comments + # + # [:shallow_path] + # Prefixes nested shallow routes with the specified path. + # + # scope :shallow_path => "sekret" do + # resources :posts do + # resources :comments, :shallow => true + # end + # end + # + # The +comments+ resource here will have the following routes generated for it: + # + # post_comments GET /sekret/posts/:post_id/comments(.:format) + # post_comments POST /sekret/posts/:post_id/comments(.:format) + # new_post_comment GET /sekret/posts/:post_id/comments/new(.:format) + # edit_comment GET /sekret/comments/:id/edit(.:format) + # comment GET /sekret/comments/:id(.:format) + # comment PUT /sekret/comments/:id(.:format) + # comment DELETE /sekret/comments/:id(.:format) + # + # === Examples + # + # # routes call Admin::PostsController + # resources :posts, :module => "admin" + # + # # resource actions are at /admin/posts. + # resources :posts, :path => "admin" def resources(*resources, &block) options = resources.extract_options! @@ -606,43 +1115,70 @@ module ActionDispatch resource_scope(Resource.new(resources.pop, options)) do yield if block_given? - collection_scope do + collection do get :index if parent_resource.actions.include?(:index) post :create if parent_resource.actions.include?(:create) end - new_scope do + new do get :new end if parent_resource.actions.include?(:new) - member_scope do + member do + get :edit if parent_resource.actions.include?(:edit) get :show if parent_resource.actions.include?(:show) put :update if parent_resource.actions.include?(:update) delete :destroy if parent_resource.actions.include?(:destroy) - get :edit if parent_resource.actions.include?(:edit) end end self end + # To add a route to the collection: + # + # resources :photos do + # collection do + # get 'search' + # end + # end + # + # This will enable Rails to recognize paths such as <tt>/photos/search</tt> + # with GET, and route to the search action of PhotosController. It will also + # create the <tt>search_photos_url</tt> and <tt>search_photos_path</tt> + # route helpers. def collection - unless @scope[:scope_level] == :resources - raise ArgumentError, "can't use collection outside resources scope" + unless resource_scope? + raise ArgumentError, "can't use collection outside resource(s) scope" end - collection_scope do - yield + with_scope_level(:collection) do + scope(parent_resource.collection_scope) do + yield + end end end + # To add a member route, add a member block into the resource block: + # + # resources :photos do + # member do + # get 'preview' + # end + # end + # + # This will recognize <tt>/photos/1/preview</tt> with GET, and route to the + # preview action of PhotosController. It will also create the + # <tt>preview_photo_url</tt> and <tt>preview_photo_path</tt> helpers. def member unless resource_scope? raise ArgumentError, "can't use member outside resource(s) scope" end - member_scope do - yield + with_scope_level(:member) do + scope(parent_resource.member_scope) do + yield + end end end @@ -651,8 +1187,10 @@ module ActionDispatch raise ArgumentError, "can't use new outside resource(s) scope" end - new_scope do - yield + with_scope_level(:new) do + scope(parent_resource.new_scope(action_path(:new))) do + yield + end end end @@ -678,6 +1216,7 @@ module ActionDispatch end end + # See ActionDispatch::Routing::Mapper::Scoping#namespace def namespace(path, options = {}) if resource_scope? nested { super } @@ -687,7 +1226,7 @@ module ActionDispatch end def shallow - scope(:shallow => true) do + scope(:shallow => true, :shallow_path => @scope[:path]) do yield end end @@ -713,46 +1252,36 @@ module ActionDispatch raise ArgumentError, "Unknown scope #{on.inspect} given to :on" end - if @scope[:scope_level] == :resource + if @scope[:scope_level] == :resources + args.push(options) + return nested { match(*args) } + elsif @scope[:scope_level] == :resource args.push(options) return member { match(*args) } end - path = options.delete(:path) action = args.first + path = path_for_action(action, options.delete(:path)) - 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 + if action.to_s =~ /^[\w\/]+$/ + options[:action] ||= action unless action.to_s.include?("/") + else + action = nil end - if resource_scope? - raise ArgumentError, "can't define route directly in resource(s) scope" + if options.key?(:as) && !options[:as] + options.delete(:as) + else + options[:as] = name_for_action(options[:as], action) end - args.push(options) - super + super(path, options) end def root(options={}) if @scope[:scope_level] == :resources - with_scope_level(:nested) do - scope(parent_resource.path, :as => parent_resource.collection_name) do + with_scope_level(:root) do + scope(parent_resource.path) do super(options) end end @@ -767,12 +1296,21 @@ module ActionDispatch @scope[:scope_level_resource] end - def apply_common_behavior_for(method, resources, options, &block) + def apply_common_behavior_for(method, resources, options, &block) #:nodoc: if resources.length > 1 resources.each { |r| send(method, r, options, &block) } return true end + if resource_scope? + nested { send(method, resources.pop, options, &block) } + return true + end + + options.keys.each do |k| + (options[:constraints] ||= {})[k] = options.delete(k) if options[k].is_a?(Regexp) + end + scope_options = options.slice!(*RESOURCE_OPTIONS) unless scope_options.empty? scope(scope_options) do @@ -785,33 +1323,26 @@ module ActionDispatch options.merge!(scope_action_options) if scope_action_options? end - if resource_scope? - nested do - send(method, resources.pop, options, &block) - end - return true - end - false end - def action_options?(options) + def action_options?(options) #:nodoc: options[:only] || options[:except] end - def scope_action_options? + def scope_action_options? #:nodoc: @scope[:options].is_a?(Hash) && (@scope[:options][:only] || @scope[:options][:except]) end - def scope_action_options + def scope_action_options #:nodoc: @scope[:options].slice(:only, :except) end - def resource_scope? + def resource_scope? #:nodoc: [:resource, :resources].include?(@scope[:scope_level]) end - def resource_method_scope? + def resource_method_scope? #:nodoc: [:collection, :member, :new].include?(@scope[:scope_level]) end @@ -837,7 +1368,7 @@ module ActionDispatch @scope[:scope_level_resource] = old_resource end - def resource_scope(resource) + def resource_scope(resource) #:nodoc: with_scope_level(resource.is_a?(SingletonResource) ? :resource : :resources, resource) do scope(parent_resource.resource_scope) do yield @@ -845,116 +1376,108 @@ module ActionDispatch 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 + def nested_options #:nodoc: {}.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)) + def id_constraint? #:nodoc: + @scope[:constraints] && @scope[:constraints][:id].is_a?(Regexp) end - def id_constraint - @scope[:id] || @scope[:constraints][:id] + def id_constraint #:nodoc: + @scope[:constraints][:id] end - def canonical_action?(action, flag) - flag && CANONICAL_ACTIONS.include?(action) + def canonical_action?(action, flag) #:nodoc: + flag && resource_method_scope? && CANONICAL_ACTIONS.include?(action.to_s) end - def shallow_scoping? + def shallow_scoping? #:nodoc: shallow? && @scope[:scope_level] == :member end - def path_for_action(action, path) + def path_for_action(action, path) #:nodoc: 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" + path = if canonical_action?(action, path.blank?) + prefix.to_s else - @scope[:path] + "#{prefix}/#{action_path(action, path)}" end end - def action_path(name, path = nil) + def action_path(name, path = nil) #:nodoc: path || @scope[:path_names][name.to_sym] || name.to_s end - def prefix_name_for_action(action, as) - if as.present? - "#{as}_" - elsif as - "" + def prefix_name_for_action(as, action) #:nodoc: + if as + as.to_s elsif !canonical_action?(action, @scope[:scope_level]) - "#{action}_" + action.to_s end end - def name_for_action(action, as=nil) - prefix = prefix_name_for_action(action, as) + def name_for_action(as, action) #:nodoc: + prefix = prefix_name_for_action(as, action) + prefix = Mapper.normalize_name(prefix) if prefix name_prefix = @scope[:as] if parent_resource + return nil if as.nil? && action.nil? + 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] + name = case @scope[:scope_level] + when :nested + [name_prefix, prefix] when :collection - "#{prefix}#{name_prefix}#{collection_name}" + [prefix, name_prefix, collection_name] when :new - "#{prefix}new_#{name_prefix}#{member_name}" + [prefix, :new, name_prefix, member_name] + when :member + [prefix, shallow_scoping? ? @scope[:shallow_prefix] : name_prefix, member_name] + when :root + [name_prefix, collection_name, prefix] 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 + [name_prefix, member_name, prefix] end + + candidate = name.select(&:present?).join("_").presence + candidate unless as.nil? && @set.routes.find { |r| r.name == candidate } + end + end + + module Shorthand #:nodoc: + def match(*args) + if args.size == 1 && args.last.is_a?(Hash) + options = args.pop + path, to = options.find { |name, value| name.is_a?(String) } + options.merge!(:to => to).delete(path) + super(path, options) + else + super end + end + end + + def initialize(set) #:nodoc: + @set = set + @scope = { :path_names => @set.resources_path_names } end include Base include HttpHelpers + include Redirection include Scoping include Resources + include Shorthand end end end |