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https://github.com/hanami/router
Ruby/Rack HTTP router
https://github.com/hanami/router
hanami http httprouter rest-api router ruby
Last synced: 3 months ago
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Ruby/Rack HTTP router
- Host: GitHub
- URL: https://github.com/hanami/router
- Owner: hanami
- License: mit
- Created: 2013-06-14T20:07:26.000Z (over 11 years ago)
- Default Branch: main
- Last Pushed: 2024-02-27T12:50:10.000Z (8 months ago)
- Last Synced: 2024-04-14T05:31:24.243Z (7 months ago)
- Topics: hanami, http, httprouter, rest-api, router, ruby
- Language: Ruby
- Homepage: http://hanamirb.org
- Size: 1010 KB
- Stars: 359
- Watchers: 30
- Forks: 89
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: LICENSE.md
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
README
# Hanami::Router
Rack compatible, lightweight, and fast HTTP Router for Ruby and [Hanami](http://hanamirb.org).
## Status
[](https://badge.fury.io/rb/hanami-router)
[](https://github.com/hanami/router/actions?query=workflow%3Aci+branch%3Amain)
[](https://codecov.io/gh/hanami/router)
[](https://depfu.com/github/hanami/router?project=Bundler)
## Contact
* Home page: http://hanamirb.org
* Mailing List: http://hanamirb.org/mailing-list
* API Doc: http://rubydoc.info/gems/hanami-router
* Bugs/Issues: https://github.com/hanami/router/issues
* Chat: http://chat.hanamirb.org
## Installation
__Hanami::Router__ supports Ruby (MRI) 3.1.+
Add this line to your application's Gemfile:
```ruby
gem "hanami-router"
```
And then execute:
```shell
$ bundle
```
Or install it yourself as:
```shell
$ gem install hanami-router
```
## Getting Started
Create a file named `config.ru`
```ruby
# frozen_string_literal: true
require "hanami/router"
app = Hanami::Router.new do
get "/", to: ->(env) { [200, {}, ["Welcome to Hanami!"]] }
end
run app
```
From the shell:
```shell
$ bundle exec rackup
```
## Usage
__Hanami::Router__ is designed to work as a standalone framework or within a
context of a [Hanami](http://hanamirb.org) application.
For the standalone usage, it supports neat features:
### A Beautiful DSL:
```ruby
Hanami::Router.new do
root to: ->(env) { [200, {}, ["Hello"]] }
get "/lambda", to: ->(env) { [200, {}, ["World"]] }
get "/dashboard", to: Dashboard::Index
get "/rack-app", to: RackApp.new
redirect "/legacy", to: "/"
mount Api::App, at: "/api"
scope "admin" do
get "/users", to: Users::Index
end
end
```
### Fixed string matching:
```ruby
Hanami::Router.new do
get "/hanami", to: ->(env) { [200, {}, ["Hello from Hanami!"]] }
end
```
### String matching with variables:
```ruby
Hanami::Router.new do
get "/flowers/:id", to: ->(env) { [200, {}, ["Hello from Flower no. #{ env["router.params"][:id] }!"]] }
end
```
### Variables Constraints:
```ruby
Hanami::Router.new do
get "/flowers/:id", id: /\d+/, to: ->(env) { [200, {}, [":id must be a number!"]] }
end
```
### String matching with globbing:
```ruby
Hanami::Router.new do
get "/*match", to: ->(env) { [200, {}, ["This is catch all: #{ env["router.params"].inspect }!"]] }
end
```
### String matching with optional tokens:
```ruby
Hanami::Router.new do
get "/hanami(.:format)" to: ->(env) { [200, {}, ["You"ve requested #{ env["router.params"][:format] }!"]] }
end
```
### Support for the most common HTTP methods:
```ruby
endpoint = ->(env) { [200, {}, ["Hello from Hanami!"]] }
Hanami::Router.new do
get "/hanami", to: endpoint
post "/hanami", to: endpoint
put "/hanami", to: endpoint
patch "/hanami", to: endpoint
delete "/hanami", to: endpoint
trace "/hanami", to: endpoint
options "/hanami", to: endpoint
end
```
### Root:
```ruby
Hanami::Router.new do
root to: ->(env) { [200, {}, ["Hello from Hanami!"]] }
end
```
### Redirect:
```ruby
Hanami::Router.new do
get "/redirect_destination", to: ->(env) { [200, {}, ["Redirect destination!"]] }
redirect "/legacy", to: "/redirect_destination"
end
```
### Named routes:
```ruby
router = Hanami::Router.new(scheme: "https", host: "hanamirb.org") do
get "/hanami", to: ->(env) { [200, {}, ["Hello from Hanami!"]] }, as: :hanami
end
router.path(:hanami) # => "/hanami"
router.url(:hanami) # => "https://hanamirb.org/hanami"
```
### Scopes:
```ruby
router = Hanami::Router.new do
scope "animals" do
scope "mammals" do
get "/cats", to: ->(env) { [200, {}, ["Meow!"]] }, as: :cats
end
end
end
# and it generates:
router.path(:animals_mammals_cats) # => "/animals/mammals/cats"
```
### Mount Rack applications:
Mounting a Rack application will forward all kind of HTTP requests to the app,
when the request path matches the `at:` path.
```ruby
Hanami::Router.new do
mount MyRackApp.new, at: "/foo"
end
```
### Duck typed endpoints:
Everything that responds to `#call` is invoked as it is:
```ruby
Hanami::Router.new do
get "/hanami", to: ->(env) { [200, {}, ["Hello from Hanami!"]] }
get "/rack-app", to: RackApp.new
get "/method", to: ActionControllerSubclass.action(:new)
end
```
### Implicit Not Found (404):
```ruby
router = Hanami::Router.new
router.call(Rack::MockRequest.env_for("/unknown")).status # => 404
```
### Explicit Not Found:
```ruby
router = Hanami::Router.new(not_found: ->(_) { [499, {}, []]})
router.call(Rack::MockRequest.env_for("/unknown")).status # => 499
```
### Body Parsers
Rack ignores request bodies unless they come from a form submission.
If we have a JSON endpoint, the payload isn't available in the params hash:
```ruby
Rack::Request.new(env).params # => {}
```
This feature enables body parsing for specific MIME Types.
It comes with a built-in JSON parser and allows to pass custom parsers.
#### JSON Parsing
```ruby
# frozen_string_literal: true
require "hanami/router"
require "hanami/middleware/body_parser"
app = Hanami::Router.new do
patch "/books/:id", to: ->(env) { [200, {}, [env["router.params"].inspect]] }
end
use Hanami::Middleware::BodyParser, :json
run app
```
```shell
curl http://localhost:2300/books/1 \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{"published":"true"}' \
-X PATCH
# => [200, {}, ["{:published=>\"true\",:id=>\"1\"}"]]
```
If the json can't be parsed an exception is raised:
```ruby
Hanami::Middleware::BodyParser::BodyParsingError
```
##### `multi_json`
If you want to use a different JSON backend, include `multi_json` in your `Gemfile`.
#### Custom Parsers
```ruby
# frozen_string_literal: true
require "hanami/router"
require "hanami/middleware/body_parser"
# See Hanami::Middleware::BodyParser::Parser
class XmlParser < Hanami::Middleware::BodyParser::Parser
def mime_types
["application/xml", "text/xml"]
end
# Parse body and return a Hash
def parse(body)
# parse xml
rescue SomeXmlParsingError => e
raise Hanami::Middleware::BodyParser::BodyParsingError.new(e)
end
end
app = Hanami::Router.new do
patch "/authors/:id", to: ->(env) { [200, {}, [env["router.params"].inspect]] }
end
use Hanami::Middleware::BodyParser, XmlParser
run app
```
```shell
curl http://localhost:2300/authors/1 \
-H "Content-Type: application/xml" \
-H "Accept: application/xml" \
-d 'LG' \
-X PATCH
# => [200, {}, ["{:name=>\"LG\",:id=>\"1\"}"]]
```
## Testing
```ruby
# frozen_string_literal: true
require "hanami/router"
router = Hanami::Router.new do
get "/books/:id", to: "books.show", as: :book
end
route = router.recognize("/books/23")
route.verb # "GET"
route.endpoint # => "books.show"
route.params # => {:id=>"23"}
route.routable? # => true
route = router.recognize(:book, id: 23)
route.verb # "GET"
route.endpoint # => "books.show"
route.params # => {:id=>"23"}
route.routable? # => true
route = router.recognize("/books/23", {}, method: :post)
route.verb # "POST"
route.routable? # => false
```
## Versioning
__Hanami::Router__ uses [Semantic Versioning 2.0.0](http://semver.org)
## Contributing
1. Fork it
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create new Pull Request
## Copyright
Copyright © 2014–2024 Hanami Team – Released under MIT License