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Diffstat (limited to 'guides/source/routing.md')
| -rw-r--r-- | guides/source/routing.md | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/guides/source/routing.md b/guides/source/routing.md index 245689932b..bd3e236a2b 100644 --- a/guides/source/routing.md +++ b/guides/source/routing.md @@ -142,10 +142,10 @@ Sometimes, you have a resource that clients always look up without referencing a get 'profile', to: 'users#show' ``` -Passing a `String` to `get` will expect a `controller#action` format, while passing a `Symbol` will map directly to an action: +Passing a `String` to `get` will expect a `controller#action` format, while passing a `Symbol` will map directly to an action but you must also specify the `controller:` to use: ```ruby -get 'profile', to: :show +get 'profile', to: :show, controller: 'users' ``` This resourceful route: @@ -252,11 +252,11 @@ TIP: _If you need to use a different controller namespace inside a `namespace` b It's common to have resources that are logically children of other resources. For example, suppose your application includes these models: ```ruby -class Magazine < ActiveRecord::Base +class Magazine < ApplicationRecord has_many :ads end -class Ad < ActiveRecord::Base +class Ad < ApplicationRecord belongs_to :magazine end ``` @@ -392,7 +392,7 @@ The comments resource here will have the following routes generated for it: ### Routing concerns -Routing Concerns allows you to declare common routes that can be reused inside other resources and routes. To define a concern: +Routing concerns allow you to declare common routes that can be reused inside other resources and routes. To define a concern: ```ruby concern :commentable do @@ -706,6 +706,8 @@ end NOTE: Request constraints work by calling a method on the [Request object](action_controller_overview.html#the-request-object) with the same name as the hash key and then compare the return value with the hash value. Therefore, constraint values should match the corresponding Request object method return type. For example: `constraints: { subdomain: 'api' }` will match an `api` subdomain as expected, however using a symbol `constraints: { subdomain: :api }` will not, because `request.subdomain` returns `'api'` as a String. +NOTE: There is an exception for the `format` constraint: while it's a method on the Request object, it's also an implicit optional parameter on every path. Segment constraints take precedence and the `format` constraint is only applied as such when enforced through a hash. For example, `get 'foo', constraints: { format: 'json' }` will match `GET /foo` because the format is optional by default. However, you can [use a lambda](#advanced-constraints) like in `get 'foo', constraints: lambda { |req| req.format == :json }` and the route will only match explicit JSON requests. + ### Advanced Constraints If you have a more advanced constraint, you can provide an object that responds to `matches?` that Rails should use. Let's say you wanted to route all users on a blacklist to the `BlacklistController`. You could do: @@ -1099,7 +1101,7 @@ You can override `ActiveRecord::Base#to_param` of a related model to construct a URL: ```ruby -class Video < ActiveRecord::Base +class Video < ApplicationRecord def to_param identifier end @@ -1116,7 +1118,7 @@ Rails offers facilities for inspecting and testing your routes. ### Listing Existing Routes -To get a complete list of the available routes in your application, visit `http://localhost:3000/rails/info/routes` in your browser while your server is running in the **development** environment. You can also execute the `rake routes` command in your terminal to produce the same output. +To get a complete list of the available routes in your application, visit `http://localhost:3000/rails/info/routes` in your browser while your server is running in the **development** environment. You can also execute the `rails routes` command in your terminal to produce the same output. Both methods will list all of your routes, in the same order that they appear in `config/routes.rb`. For each route, you'll see: @@ -1125,7 +1127,7 @@ Both methods will list all of your routes, in the same order that they appear in * The URL pattern to match * The routing parameters for the route -For example, here's a small section of the `rake routes` output for a RESTful route: +For example, here's a small section of the `rails routes` output for a RESTful route: ``` users GET /users(.:format) users#index @@ -1134,13 +1136,24 @@ For example, here's a small section of the `rake routes` output for a RESTful ro edit_user GET /users/:id/edit(.:format) users#edit ``` -You may restrict the listing to the routes that map to a particular controller setting the `CONTROLLER` environment variable: +You can search through your routes with the grep option: -g. This outputs any routes that partially match the URL helper method name, the HTTP verb, or the URL path. + +``` +$ bin/rails routes -g new_comment +$ bin/rails routes -g POST +$ bin/rails routes -g admin +``` + +If you only want to see the routes that map to a specific controller, there's the -c option. -```bash -$ CONTROLLER=users bin/rake routes +``` +$ bin/rails routes -c users +$ bin/rails routes -c admin/users +$ bin/rails routes -c Comments +$ bin/rails routes -c Articles::CommentsController ``` -TIP: You'll find that the output from `rake routes` is much more readable if you widen your terminal window until the output lines don't wrap. +TIP: You'll find that the output from `rails routes` is much more readable if you widen your terminal window until the output lines don't wrap. ### Testing Routes |