rails/actionpack/lib/action_controller/routing/resources.rb
Carl Lerche & Yehuda Katz 906aebceed Bring abstract_controller up to date with rails/master
Resolved all the conflicts since 2.3.0 -> HEAD. Following is a list
of commits that could not be applied cleanly or are obviated with the
abstract_controller refactor. They all need to be revisited to ensure
that fixes made in 2.3 do not reappear in 3.0:

2259ecf368e6a6715966f69216e3ee86bf1a82a7
AR not available
  * This will be reimplemented with ActionORM or equivalent

06182ea02e92afad579998aa80144588e8865ac3
implicitly rendering a js response should not use the default layout
[#1844 state:resolved]
  * This will be handled generically

893e9eb99504705419ad6edac14d00e71cef5f12
Improve view rendering performance in development mode and reinstate
template recompiling in production [#1909 state:resolved]
  * We will need to reimplement rails-dev-boost on top of the refactor;
    the changes here are very implementation specific and cannot be
    cleanly applied. The following commits are implicated:

      199e750d46c04970b5e7684998d09405648ecbd4
      3942cb406e1d5db0ac00e03153809cc8dc4cc4db
      f8ea9f85d4f1e3e6f3b5d895bef6b013aa4b0690
      e3b166aab37ddc2fbab030b146eb61713b91bf55
      ae9f258e03c9fd5088da12c1c6cd216cc89a01f7
      44423126c6f6133a1d9cf1d0832b527e8711d40f

0cb020b4d6d838025859bd60fb8151c8e21b8e84
workaround for picking layouts based on wrong view_paths
[#1974 state:resolved]
  * The specifics of this commit no longer apply. Since it is a two-line
    commit, we will reimplement this change.

8c5cc66a831aadb159f3daaffa4208064c30af0e
make action_controller/layouts pick templates from the current instance's
view_paths instead of the class view_paths [#1974 state:resolved]
  * This does not apply at all. It should be trivial to apply the feature
    to the reimplemented ActionController::Base.

87e8b162463f13bd50d27398f020769460a770e3
fix HTML fallback for explicit templates [#2052 state:resolved]
  * There were a number of patches related to this that simply compounded
    each other. Basically none of them apply cleanly, and the underlying
    issue needs to be revisited. After discussing the underlying problem
    with Koz, we will defer these fixes for further discussion.
2009-04-13 15:18:45 -07:00

679 lines
28 KiB
Ruby

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(&:to_sym)
elsif except
@allowed_actions[:except] = Array(except).map(&: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 names for the 'new' and 'edit' actions. For example:
# # new_products_path == '/productos/nuevo'
# map.resources :products, :as => 'productos', :path_names => { :new => 'nuevo', :edit => 'editar' }
#
# 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_collection_actions(map, resource)
map_default_collection_actions(map, resource)
map_new_actions(map, resource)
map_member_actions(map, resource)
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
end
end
def map_singleton_resource(entities, options = {}, &block)
resource = SingletonResource.new(entities, options)
with_options :controller => resource.controller do |map|
map_collection_actions(map, resource)
map_new_actions(map, resource)
map_member_actions(map, resource)
map_default_singleton_actions(map, resource)
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
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|
map_resource_routes(map, resource, action, "#{resource.path}#{resource.action_separator}#{action}", "#{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