diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/routing/mapper.rb')
| -rw-r--r-- | actionpack/lib/action_dispatch/routing/mapper.rb | 151 |
1 files changed, 137 insertions, 14 deletions
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb index 8d9f70e3c6..8ad17504ae 100644 --- a/actionpack/lib/action_dispatch/routing/mapper.rb +++ b/actionpack/lib/action_dispatch/routing/mapper.rb @@ -17,9 +17,9 @@ module ActionDispatch CALL = ->(app, req) { app.call req.env } def initialize(app, constraints, strategy) - # Unwrap Constraints objects. I don't actually think it's possible + # Unwrap Constraints objects. I don't actually think it's possible # to pass a Constraints object to this constructor, but there were - # multiple places that kept testing children of this object. I + # multiple places that kept testing children of this object. I # *think* they were just being defensive, but I have no idea. if app.is_a?(self.class) constraints += app.constraints @@ -218,7 +218,7 @@ module ActionDispatch private def add_wildcard_options(options, formatted, path_ast) # Add a constraint for wildcard route to make it non-greedy and match the - # optional format part of the route by default + # optional format part of the route by default. if formatted != false path_ast.grep(Journey::Nodes::Star).each_with_object({}) { |node, hash| hash[node.name.to_sym] ||= /.+?/ @@ -396,7 +396,7 @@ module ActionDispatch end module Base - # Matches a url pattern to one or more routes. + # Matches a URL pattern to one or more routes. # # You should not use the +match+ method in your router # without specifying an HTTP method. @@ -406,7 +406,7 @@ module ActionDispatch # # sets :controller, :action and :id in params # match ':controller/:action/:id', via: [:get, :post] # - # Note that +:controller+, +:action+ and +:id+ are interpreted as url + # Note that +:controller+, +:action+ and +:id+ are interpreted as URL # query parameters and thus available through +params+ in an action. # # If you want to expose your action to GET, use +get+ in the router: @@ -455,7 +455,7 @@ module ActionDispatch # # === Options # - # Any options not seen here are passed on as params with the url. + # Any options not seen here are passed on as params with the URL. # # [:controller] # The route's controller. @@ -660,7 +660,7 @@ module ActionDispatch else prefix_options = options.slice(*_route.segment_keys) prefix_options[:relative_url_root] = "".freeze - # we must actually delete prefix segment keys to avoid passing them to next url_for + # 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 @@ -1238,7 +1238,7 @@ module ActionDispatch # # resource :profile # - # creates six different routes in your application, all mapping to + # This creates six different routes in your application, all mapping to # the +Profiles+ controller (note that the controller is named after # the plural): # @@ -1323,14 +1323,14 @@ module ActionDispatch # # resources :posts, path_names: { new: "brand_new" } # - # The above example will now change /posts/new to /posts/brand_new + # The above example will now change /posts/new to /posts/brand_new. # # [:path] # Allows you to change the path prefix for the resource. # # resources :posts, path: 'postings' # - # The resource and all segments will now route to /postings instead of /posts + # The resource and all segments will now route to /postings instead of /posts. # # [:only] # Only generate routes for the given actions. @@ -1525,7 +1525,7 @@ module ActionDispatch end end - # See ActionDispatch::Routing::Mapper::Scoping#namespace + # See ActionDispatch::Routing::Mapper::Scoping#namespace. def namespace(path, options = {}) if resource_scope? nested { super } @@ -1545,7 +1545,7 @@ module ActionDispatch !parent_resource.singleton? && @scope[:shallow] end - # Matches a url pattern to one or more routes. + # Matches a URL pattern to one or more routes. # For more information, see match[rdoc-ref:Base#match]. # # match 'path' => 'controller#action', via: patch @@ -1904,7 +1904,7 @@ module ActionDispatch ast = Journey::Parser.parse path mapping = Mapping.build(@scope, @set, ast, controller, default_action, to, via, formatted, options_constraints, anchor, options) - @set.add_route(mapping, ast, as, anchor) + @set.add_route(mapping, as) end def match_root_route(options) @@ -2003,7 +2003,7 @@ module ActionDispatch # concerns :commentable # end # - # concerns also work in any routes helper that you want to use: + # Concerns also work in any routes helper that you want to use: # # namespace :posts do # concerns :commentable @@ -2020,6 +2020,120 @@ module ActionDispatch end end + module CustomUrls + # Define custom url helpers that will be added to the application's + # routes. This allows you to override and/or replace the default behavior + # of routing helpers, e.g: + # + # direct :homepage do + # "http://www.rubyonrails.org" + # end + # + # direct :commentable do |model| + # [ model, anchor: model.dom_id ] + # end + # + # direct :main do + # { controller: "pages", action: "index", subdomain: "www" } + # end + # + # The return value from the block passed to `direct` must be a valid set of + # arguments for `url_for` which will actually build the URL string. This can + # be one of the following: + # + # * A string, which is treated as a generated URL + # * A hash, e.g. { controller: "pages", action: "index" } + # * An array, which is passed to `polymorphic_url` + # * An Active Model instance + # * An Active Model class + # + # NOTE: Other URL helpers can be called in the block but be careful not to invoke + # your custom URL helper again otherwise it will result in a stack overflow error. + # + # You can also specify default options that will be passed through to + # your URL helper definition, e.g: + # + # direct :browse, page: 1, size: 10 do |options| + # [ :products, options.merge(params.permit(:page, :size).to_h.symbolize_keys) ] + # end + # + # In this instance the `params` object comes from the context in which the the + # block is executed, e.g. generating a URL inside a controller action or a view. + # If the block is executed where there isn't a params object such as this: + # + # Rails.application.routes.url_helpers.browse_path + # + # then it will raise a `NameError`. Because of this you need to be aware of the + # context in which you will use your custom URL helper when defining it. + # + # NOTE: The `direct` method can't be used inside of a scope block such as + # `namespace` or `scope` and will raise an error if it detects that it is. + def direct(name, options = {}, &block) + unless @scope.root? + raise RuntimeError, "The direct method can't be used inside a routes scope block" + end + + @set.add_url_helper(name, options, &block) + end + + # Define custom polymorphic mappings of models to URLs. This alters the + # behavior of `polymorphic_url` and consequently the behavior of + # `link_to` and `form_for` when passed a model instance, e.g: + # + # resource :basket + # + # resolve "Basket" do + # [:basket] + # end + # + # This will now generate "/basket" when a `Basket` instance is passed to + # `link_to` or `form_for` instead of the standard "/baskets/:id". + # + # NOTE: This custom behavior only applies to simple polymorphic URLs where + # a single model instance is passed and not more complicated forms, e.g: + # + # # config/routes.rb + # resource :profile + # namespace :admin do + # resources :users + # end + # + # resolve("User") { [:profile] } + # + # # app/views/application/_menu.html.erb + # link_to "Profile", @current_user + # link_to "Profile", [:admin, @current_user] + # + # The first `link_to` will generate "/profile" but the second will generate + # the standard polymorphic URL of "/admin/users/1". + # + # You can pass options to a polymorphic mapping - the arity for the block + # needs to be two as the instance is passed as the first argument, e.g: + # + # resolve "Basket", anchor: "items" do |basket, options| + # [:basket, options] + # end + # + # This generates the URL "/basket#items" because when the last item in an + # array passed to `polymorphic_url` is a hash then it's treated as options + # to the URL helper that gets called. + # + # NOTE: The `resolve` method can't be used inside of a scope block such as + # `namespace` or `scope` and will raise an error if it detects that it is. + def resolve(*args, &block) + unless @scope.root? + raise RuntimeError, "The resolve method can't be used inside a routes scope block" + end + + options = args.extract_options! + args = args.flatten(1) + + args.each do |klass| + @set.add_polymorphic_mapping(klass, options, &block) + end + end + end + class Scope # :nodoc: OPTIONS = [:path, :shallow_path, :as, :shallow_prefix, :module, :controller, :action, :path_names, :constraints, @@ -2040,6 +2154,14 @@ module ActionDispatch scope_level == :nested end + def null? + @hash.nil? && @parent.nil? + end + + def root? + @parent.null? + end + def resources? scope_level == :resources end @@ -2113,6 +2235,7 @@ module ActionDispatch include Scoping include Concerns include Resources + include CustomUrls end end end |