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Diffstat (limited to 'actionpack/lib/action_controller/routing/resources.rb')
| -rw-r--r-- | actionpack/lib/action_controller/routing/resources.rb | 685 |
1 files changed, 0 insertions, 685 deletions
diff --git a/actionpack/lib/action_controller/routing/resources.rb b/actionpack/lib/action_controller/routing/resources.rb deleted file mode 100644 index 06506435a2..0000000000 --- a/actionpack/lib/action_controller/routing/resources.rb +++ /dev/null @@ -1,685 +0,0 @@ -require 'active_support/core_ext/hash/slice' -require 'active_support/core_ext/object/try' - -module ActionController - # == Overview - # - # ActionController::Resources are a way of defining RESTful \resources. A RESTful \resource, in basic terms, - # is something that can be pointed at and it will respond with a representation of the data requested. - # In real terms this could mean a user with a browser requests an HTML page, or that a desktop application - # requests XML data. - # - # RESTful design is based on the assumption that there are four generic verbs that a user of an - # application can request from a \resource (the noun). - # - # \Resources can be requested using four basic HTTP verbs (GET, POST, PUT, DELETE), the method used - # denotes the type of action that should take place. - # - # === The Different Methods and their Usage - # - # * GET - Requests for a \resource, no saving or editing of a \resource should occur in a GET request. - # * POST - Creation of \resources. - # * PUT - Editing of attributes on a \resource. - # * DELETE - Deletion of a \resource. - # - # === Examples - # - # # A GET request on the Posts resource is asking for all Posts - # GET /posts - # - # # A GET request on a single Post resource is asking for that particular Post - # GET /posts/1 - # - # # A POST request on the Posts resource is asking for a Post to be created with the supplied details - # POST /posts # with => { :post => { :title => "My Whizzy New Post", :body => "I've got a brand new combine harvester" } } - # - # # A PUT request on a single Post resource is asking for a Post to be updated - # PUT /posts # with => { :id => 1, :post => { :title => "Changed Whizzy Title" } } - # - # # A DELETE request on a single Post resource is asking for it to be deleted - # DELETE /posts # with => { :id => 1 } - # - # By using the REST convention, users of our application can assume certain things about how the data - # is requested and how it is returned. Rails simplifies the routing part of RESTful design by - # supplying you with methods to create them in your routes.rb file. - # - # Read more about REST at http://en.wikipedia.org/wiki/Representational_State_Transfer - module Resources - INHERITABLE_OPTIONS = :namespace, :shallow - - class Resource #:nodoc: - DEFAULT_ACTIONS = :index, :create, :new, :edit, :show, :update, :destroy - - attr_reader :collection_methods, :member_methods, :new_methods - attr_reader :path_prefix, :name_prefix, :path_segment - attr_reader :plural, :singular - attr_reader :options - - def initialize(entities, options) - @plural ||= entities - @singular ||= options[:singular] || plural.to_s.singularize - @path_segment = options.delete(:as) || @plural - - @options = options - - arrange_actions - add_default_actions - set_allowed_actions - set_prefixes - end - - def controller - @controller ||= "#{options[:namespace]}#{(options[:controller] || plural).to_s}" - end - - def requirements(with_id = false) - @requirements ||= @options[:requirements] || {} - @id_requirement ||= { :id => @requirements.delete(:id) || /[^#{Routing::SEPARATORS.join}]+/ } - - with_id ? @requirements.merge(@id_requirement) : @requirements - end - - def conditions - @conditions ||= @options[:conditions] || {} - end - - def path - @path ||= "#{path_prefix}/#{path_segment}" - end - - def new_path - new_action = self.options[:path_names][:new] if self.options[:path_names] - new_action ||= Base.resources_path_names[:new] - @new_path ||= "#{path}/#{new_action}" - end - - def shallow_path_prefix - @shallow_path_prefix ||= @options[:shallow] ? @options[:namespace].try(:sub, /\/$/, '') : path_prefix - end - - def member_path - @member_path ||= "#{shallow_path_prefix}/#{path_segment}/:id" - end - - def nesting_path_prefix - @nesting_path_prefix ||= "#{shallow_path_prefix}/#{path_segment}/:#{singular}_id" - end - - def shallow_name_prefix - @shallow_name_prefix ||= @options[:shallow] ? @options[:namespace].try(:gsub, /\//, '_') : name_prefix - end - - def nesting_name_prefix - "#{shallow_name_prefix}#{singular}_" - end - - def action_separator - @action_separator ||= Base.resource_action_separator - end - - def uncountable? - @singular.to_s == @plural.to_s - end - - def has_action?(action) - !DEFAULT_ACTIONS.include?(action) || action_allowed?(action) - end - - protected - def arrange_actions - @collection_methods = arrange_actions_by_methods(options.delete(:collection)) - @member_methods = arrange_actions_by_methods(options.delete(:member)) - @new_methods = arrange_actions_by_methods(options.delete(:new)) - end - - def add_default_actions - add_default_action(member_methods, :get, :edit) - add_default_action(new_methods, :get, :new) - end - - def set_allowed_actions - only, except = @options.values_at(:only, :except) - @allowed_actions ||= {} - - if only == :all || except == :none - only = nil - except = [] - elsif only == :none || except == :all - only = [] - except = nil - end - - if only - @allowed_actions[:only] = Array(only).map {|a| a.to_sym } - elsif except - @allowed_actions[:except] = Array(except).map {|a| a.to_sym } - end - end - - def action_allowed?(action) - only, except = @allowed_actions.values_at(:only, :except) - (!only || only.include?(action)) && (!except || !except.include?(action)) - end - - def set_prefixes - @path_prefix = options.delete(:path_prefix) - @name_prefix = options.delete(:name_prefix) - end - - def arrange_actions_by_methods(actions) - (actions || {}).inject({}) do |flipped_hash, (key, value)| - (flipped_hash[value] ||= []) << key - flipped_hash - end - end - - def add_default_action(collection, method, action) - (collection[method] ||= []).unshift(action) - end - end - - class SingletonResource < Resource #:nodoc: - def initialize(entity, options) - @singular = @plural = entity - options[:controller] ||= @singular.to_s.pluralize - super - end - - alias_method :shallow_path_prefix, :path_prefix - alias_method :shallow_name_prefix, :name_prefix - alias_method :member_path, :path - alias_method :nesting_path_prefix, :path - end - - # Creates named routes for implementing verb-oriented controllers - # for a collection \resource. - # - # For example: - # - # map.resources :messages - # - # will map the following actions in the corresponding controller: - # - # class MessagesController < ActionController::Base - # # GET messages_url - # def index - # # return all messages - # end - # - # # GET new_message_url - # def new - # # return an HTML form for describing a new message - # end - # - # # POST messages_url - # def create - # # create a new message - # end - # - # # GET message_url(:id => 1) - # def show - # # find and return a specific message - # end - # - # # GET edit_message_url(:id => 1) - # def edit - # # return an HTML form for editing a specific message - # end - # - # # PUT message_url(:id => 1) - # def update - # # find and update a specific message - # end - # - # # DELETE message_url(:id => 1) - # def destroy - # # delete a specific message - # end - # end - # - # Along with the routes themselves, +resources+ generates named routes for use in - # controllers and views. <tt>map.resources :messages</tt> produces the following named routes and helpers: - # - # Named Route Helpers - # ============ ===================================================== - # messages messages_url, hash_for_messages_url, - # messages_path, hash_for_messages_path - # - # message message_url(id), hash_for_message_url(id), - # message_path(id), hash_for_message_path(id) - # - # new_message new_message_url, hash_for_new_message_url, - # new_message_path, hash_for_new_message_path - # - # edit_message edit_message_url(id), hash_for_edit_message_url(id), - # edit_message_path(id), hash_for_edit_message_path(id) - # - # You can use these helpers instead of +url_for+ or methods that take +url_for+ parameters. For example: - # - # redirect_to :controller => 'messages', :action => 'index' - # # and - # <%= link_to "edit this message", :controller => 'messages', :action => 'edit', :id => @message.id %> - # - # now become: - # - # redirect_to messages_url - # # and - # <%= link_to "edit this message", edit_message_url(@message) # calls @message.id automatically - # - # Since web browsers don't support the PUT and DELETE verbs, you will need to add a parameter '_method' to your - # form tags. The form helpers make this a little easier. For an update form with a <tt>@message</tt> object: - # - # <%= form_tag message_path(@message), :method => :put %> - # - # or - # - # <% form_for :message, @message, :url => message_path(@message), :html => {:method => :put} do |f| %> - # - # or - # - # <% form_for @message do |f| %> - # - # which takes into account whether <tt>@message</tt> is a new record or not and generates the - # path and method accordingly. - # - # The +resources+ method accepts the following options to customize the resulting routes: - # * <tt>:collection</tt> - Add named routes for other actions that operate on the collection. - # Takes a hash of <tt>#{action} => #{method}</tt>, where method is <tt>:get</tt>/<tt>:post</tt>/<tt>:put</tt>/<tt>:delete</tt>, - # an array of any of the previous, or <tt>:any</tt> if the method does not matter. - # These routes map to a URL like /messages/rss, with a route of +rss_messages_url+. - # * <tt>:member</tt> - Same as <tt>:collection</tt>, but for actions that operate on a specific member. - # * <tt>:new</tt> - Same as <tt>:collection</tt>, but for actions that operate on the new \resource action. - # * <tt>:controller</tt> - Specify the controller name for the routes. - # * <tt>:singular</tt> - Specify the singular name used in the member routes. - # * <tt>:requirements</tt> - Set custom routing parameter requirements; this is a hash of either - # regular expressions (which must match for the route to match) or extra parameters. For example: - # - # map.resource :profile, :path_prefix => ':name', :requirements => { :name => /[a-zA-Z]+/, :extra => 'value' } - # - # will only match if the first part is alphabetic, and will pass the parameter :extra to the controller. - # * <tt>:conditions</tt> - Specify custom routing recognition conditions. \Resources sets the <tt>:method</tt> value for the method-specific routes. - # * <tt>:as</tt> - Specify a different \resource name to use in the URL path. For example: - # # products_path == '/productos' - # map.resources :products, :as => 'productos' do |product| - # # product_reviews_path(product) == '/productos/1234/comentarios' - # product.resources :product_reviews, :as => 'comentarios' - # end - # - # * <tt>:has_one</tt> - Specify nested \resources, this is a shorthand for mapping singleton \resources beneath the current. - # * <tt>:has_many</tt> - Same has <tt>:has_one</tt>, but for plural \resources. - # - # You may directly specify the routing association with +has_one+ and +has_many+ like: - # - # map.resources :notes, :has_one => :author, :has_many => [:comments, :attachments] - # - # This is the same as: - # - # map.resources :notes do |notes| - # notes.resource :author - # notes.resources :comments - # notes.resources :attachments - # end - # - # * <tt>:path_names</tt> - Specify different path names for the actions. For example: - # # new_products_path == '/productos/nuevo' - # # bids_product_path(1) == '/productos/1/licitacoes' - # map.resources :products, :as => 'productos', :member => { :bids => :get }, :path_names => { :new => 'nuevo', :bids => 'licitacoes' } - # - # You can also set default action names from an environment, like this: - # config.action_controller.resources_path_names = { :new => 'nuevo', :edit => 'editar' } - # - # * <tt>:path_prefix</tt> - Set a prefix to the routes with required route variables. - # - # Weblog comments usually belong to a post, so you might use +resources+ like: - # - # map.resources :articles - # map.resources :comments, :path_prefix => '/articles/:article_id' - # - # You can nest +resources+ calls to set this automatically: - # - # map.resources :articles do |article| - # article.resources :comments - # end - # - # The comment \resources work the same, but must now include a value for <tt>:article_id</tt>. - # - # article_comments_url(@article) - # article_comment_url(@article, @comment) - # - # article_comments_url(:article_id => @article) - # article_comment_url(:article_id => @article, :id => @comment) - # - # If you don't want to load all objects from the database you might want to use the <tt>article_id</tt> directly: - # - # articles_comments_url(@comment.article_id, @comment) - # - # * <tt>:name_prefix</tt> - Define a prefix for all generated routes, usually ending in an underscore. - # Use this if you have named routes that may clash. - # - # map.resources :tags, :path_prefix => '/books/:book_id', :name_prefix => 'book_' - # map.resources :tags, :path_prefix => '/toys/:toy_id', :name_prefix => 'toy_' - # - # You may also use <tt>:name_prefix</tt> to override the generic named routes in a nested \resource: - # - # map.resources :articles do |article| - # article.resources :comments, :name_prefix => nil - # end - # - # This will yield named \resources like so: - # - # comments_url(@article) - # comment_url(@article, @comment) - # - # * <tt>:shallow</tt> - If true, paths for nested resources which reference a specific member - # (ie. those with an :id parameter) will not use the parent path prefix or name prefix. - # - # The <tt>:shallow</tt> option is inherited by any nested resource(s). - # - # For example, 'users', 'posts' and 'comments' all use shallow paths with the following nested resources: - # - # map.resources :users, :shallow => true do |user| - # user.resources :posts do |post| - # post.resources :comments - # end - # end - # # --> GET /users/1/posts (maps to the PostsController#index action as usual) - # # also adds the usual named route called "user_posts" - # # --> GET /posts/2 (maps to the PostsController#show action as if it were not nested) - # # also adds the named route called "post" - # # --> GET /posts/2/comments (maps to the CommentsController#index action) - # # also adds the named route called "post_comments" - # # --> GET /comments/2 (maps to the CommentsController#show action as if it were not nested) - # # also adds the named route called "comment" - # - # You may also use <tt>:shallow</tt> in combination with the +has_one+ and +has_many+ shorthand notations like: - # - # map.resources :users, :has_many => { :posts => :comments }, :shallow => true - # - # * <tt>:only</tt> and <tt>:except</tt> - Specify which of the seven default actions should be routed to. - # - # <tt>:only</tt> and <tt>:except</tt> may be set to <tt>:all</tt>, <tt>:none</tt>, an action name or a - # list of action names. By default, routes are generated for all seven actions. - # - # For example: - # - # map.resources :posts, :only => [:index, :show] do |post| - # post.resources :comments, :except => [:update, :destroy] - # end - # # --> GET /posts (maps to the PostsController#index action) - # # --> POST /posts (fails) - # # --> GET /posts/1 (maps to the PostsController#show action) - # # --> DELETE /posts/1 (fails) - # # --> POST /posts/1/comments (maps to the CommentsController#create action) - # # --> PUT /posts/1/comments/1 (fails) - # - # If <tt>map.resources</tt> is called with multiple resources, they all get the same options applied. - # - # Examples: - # - # map.resources :messages, :path_prefix => "/thread/:thread_id" - # # --> GET /thread/7/messages/1 - # - # map.resources :messages, :collection => { :rss => :get } - # # --> GET /messages/rss (maps to the #rss action) - # # also adds a named route called "rss_messages" - # - # map.resources :messages, :member => { :mark => :post } - # # --> POST /messages/1/mark (maps to the #mark action) - # # also adds a named route called "mark_message" - # - # map.resources :messages, :new => { :preview => :post } - # # --> POST /messages/new/preview (maps to the #preview action) - # # also adds a named route called "preview_new_message" - # - # map.resources :messages, :new => { :new => :any, :preview => :post } - # # --> POST /messages/new/preview (maps to the #preview action) - # # also adds a named route called "preview_new_message" - # # --> /messages/new can be invoked via any request method - # - # map.resources :messages, :controller => "categories", - # :path_prefix => "/category/:category_id", - # :name_prefix => "category_" - # # --> GET /categories/7/messages/1 - # # has named route "category_message" - # - # The +resources+ method sets HTTP method restrictions on the routes it generates. For example, making an - # HTTP POST on <tt>new_message_url</tt> will raise a RoutingError exception. The default route in - # <tt>config/routes.rb</tt> overrides this and allows invalid HTTP methods for \resource routes. - def resources(*entities, &block) - options = entities.extract_options! - entities.each { |entity| map_resource(entity, options.dup, &block) } - end - - # Creates named routes for implementing verb-oriented controllers for a singleton \resource. - # A singleton \resource is global to its current context. For unnested singleton \resources, - # the \resource is global to the current user visiting the application, such as a user's - # <tt>/account</tt> profile. For nested singleton \resources, the \resource is global to its parent - # \resource, such as a <tt>projects</tt> \resource that <tt>has_one :project_manager</tt>. - # The <tt>project_manager</tt> should be mapped as a singleton \resource under <tt>projects</tt>: - # - # map.resources :projects do |project| - # project.resource :project_manager - # end - # - # See +resources+ for general conventions. These are the main differences: - # * A singular name is given to <tt>map.resource</tt>. The default controller name is still taken from the plural name. - # * To specify a custom plural name, use the <tt>:plural</tt> option. There is no <tt>:singular</tt> option. - # * No default index route is created for the singleton \resource controller. - # * When nesting singleton \resources, only the singular name is used as the path prefix (example: 'account/messages/1') - # - # For example: - # - # map.resource :account - # - # maps these actions in the Accounts controller: - # - # class AccountsController < ActionController::Base - # # GET new_account_url - # def new - # # return an HTML form for describing the new account - # end - # - # # POST account_url - # def create - # # create an account - # end - # - # # GET account_url - # def show - # # find and return the account - # end - # - # # GET edit_account_url - # def edit - # # return an HTML form for editing the account - # end - # - # # PUT account_url - # def update - # # find and update the account - # end - # - # # DELETE account_url - # def destroy - # # delete the account - # end - # end - # - # Along with the routes themselves, +resource+ generates named routes for - # use in controllers and views. <tt>map.resource :account</tt> produces - # these named routes and helpers: - # - # Named Route Helpers - # ============ ============================================= - # account account_url, hash_for_account_url, - # account_path, hash_for_account_path - # - # new_account new_account_url, hash_for_new_account_url, - # new_account_path, hash_for_new_account_path - # - # edit_account edit_account_url, hash_for_edit_account_url, - # edit_account_path, hash_for_edit_account_path - def resource(*entities, &block) - options = entities.extract_options! - entities.each { |entity| map_singleton_resource(entity, options.dup, &block) } - end - - private - def map_resource(entities, options = {}, &block) - resource = Resource.new(entities, options) - - with_options :controller => resource.controller do |map| - map_associations(resource, options) - - if block_given? - with_options(options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => resource.nesting_path_prefix, :name_prefix => resource.nesting_name_prefix), &block) - end - - map_collection_actions(map, resource) - map_default_collection_actions(map, resource) - map_new_actions(map, resource) - map_member_actions(map, resource) - end - end - - def map_singleton_resource(entities, options = {}, &block) - resource = SingletonResource.new(entities, options) - - with_options :controller => resource.controller do |map| - map_associations(resource, options) - - if block_given? - with_options(options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => resource.nesting_path_prefix, :name_prefix => resource.nesting_name_prefix), &block) - end - - map_collection_actions(map, resource) - map_new_actions(map, resource) - map_member_actions(map, resource) - map_default_singleton_actions(map, resource) - end - end - - def map_associations(resource, options) - map_has_many_associations(resource, options.delete(:has_many), options) if options[:has_many] - - path_prefix = "#{options.delete(:path_prefix)}#{resource.nesting_path_prefix}" - name_prefix = "#{options.delete(:name_prefix)}#{resource.nesting_name_prefix}" - - Array(options[:has_one]).each do |association| - resource(association, options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => path_prefix, :name_prefix => name_prefix)) - end - end - - def map_has_many_associations(resource, associations, options) - case associations - when Hash - associations.each do |association,has_many| - map_has_many_associations(resource, association, options.merge(:has_many => has_many)) - end - when Array - associations.each do |association| - map_has_many_associations(resource, association, options) - end - when Symbol, String - resources(associations, options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => resource.nesting_path_prefix, :name_prefix => resource.nesting_name_prefix, :has_many => options[:has_many])) - else - end - end - - def map_collection_actions(map, resource) - resource.collection_methods.each do |method, actions| - actions.each do |action| - [method].flatten.each do |m| - action_path = resource.options[:path_names][action] if resource.options[:path_names].is_a?(Hash) - action_path ||= action - - map_resource_routes(map, resource, action, "#{resource.path}#{resource.action_separator}#{action_path}", "#{action}_#{resource.name_prefix}#{resource.plural}", m) - end - end - end - end - - def map_default_collection_actions(map, resource) - index_route_name = "#{resource.name_prefix}#{resource.plural}" - - if resource.uncountable? - index_route_name << "_index" - end - - map_resource_routes(map, resource, :index, resource.path, index_route_name) - map_resource_routes(map, resource, :create, resource.path, index_route_name) - end - - def map_default_singleton_actions(map, resource) - map_resource_routes(map, resource, :create, resource.path, "#{resource.shallow_name_prefix}#{resource.singular}") - end - - def map_new_actions(map, resource) - resource.new_methods.each do |method, actions| - actions.each do |action| - route_path = resource.new_path - route_name = "new_#{resource.name_prefix}#{resource.singular}" - - unless action == :new - route_path = "#{route_path}#{resource.action_separator}#{action}" - route_name = "#{action}_#{route_name}" - end - - map_resource_routes(map, resource, action, route_path, route_name, method) - end - end - end - - def map_member_actions(map, resource) - resource.member_methods.each do |method, actions| - actions.each do |action| - [method].flatten.each do |m| - action_path = resource.options[:path_names][action] if resource.options[:path_names].is_a?(Hash) - action_path ||= Base.resources_path_names[action] || action - - map_resource_routes(map, resource, action, "#{resource.member_path}#{resource.action_separator}#{action_path}", "#{action}_#{resource.shallow_name_prefix}#{resource.singular}", m, { :force_id => true }) - end - end - end - - route_path = "#{resource.shallow_name_prefix}#{resource.singular}" - map_resource_routes(map, resource, :show, resource.member_path, route_path) - map_resource_routes(map, resource, :update, resource.member_path, route_path) - map_resource_routes(map, resource, :destroy, resource.member_path, route_path) - end - - def map_resource_routes(map, resource, action, route_path, route_name = nil, method = nil, resource_options = {} ) - if resource.has_action?(action) - action_options = action_options_for(action, resource, method, resource_options) - formatted_route_path = "#{route_path}.:format" - - if route_name && @set.named_routes[route_name.to_sym].nil? - map.named_route(route_name, formatted_route_path, action_options) - else - map.connect(formatted_route_path, action_options) - end - end - end - - def add_conditions_for(conditions, method) - returning({:conditions => conditions.dup}) do |options| - options[:conditions][:method] = method unless method == :any - end - end - - def action_options_for(action, resource, method = nil, resource_options = {}) - default_options = { :action => action.to_s } - require_id = !resource.kind_of?(SingletonResource) - force_id = resource_options[:force_id] && !resource.kind_of?(SingletonResource) - - case default_options[:action] - when "index", "new"; default_options.merge(add_conditions_for(resource.conditions, method || :get)).merge(resource.requirements) - when "create"; default_options.merge(add_conditions_for(resource.conditions, method || :post)).merge(resource.requirements) - when "show", "edit"; default_options.merge(add_conditions_for(resource.conditions, method || :get)).merge(resource.requirements(require_id)) - when "update"; default_options.merge(add_conditions_for(resource.conditions, method || :put)).merge(resource.requirements(require_id)) - when "destroy"; default_options.merge(add_conditions_for(resource.conditions, method || :delete)).merge(resource.requirements(require_id)) - else default_options.merge(add_conditions_for(resource.conditions, method)).merge(resource.requirements(force_id)) - end - end - end -end |