HttpRouter

HTTP Router with various macros to assist in developing your application and organizing your code

Installation

Add the following line to your dependency list in your mix.exs file, and run mix deps.get:

{:http_router, "~> 0.0.1"}

Also, be sure to add :http_router to the list of applications on which your web application depends (the default looks something like applications: [:logger]) in your mix.exs file.

Be sure to have Plug in your dependency list as well as this is essentially a reimagination of the Plug.Router module, and as such, it still make use of a large portion of the Plug library.

Usage

To get the benefits that this package has to offer, it is necessary to use the HttpRouter module in one of your modules that you wish to act as the router for your web application. Similar to Plug.Router, we can start with a simple module:

defmodule MyRouter do
  use HttpRouter
end

That was easy, huh? Now, this module still needs a few calls to the below macros, but this depends on how your application needs to be structured.

The Macros

Check out this convoluted example:

defmodule MyRouter do
  use HttpRouter

  # Define one of the versions of the API
  # with a simple version number "1"
  # or following semver "1.0.0"
  # or date of release "2014-09-06"
  version "1" do
    # Define your routes here
    get  "/",               Handlers.V1.Pages, :index
    get  "/pages",          Handlers.V1.Pages, :create
    post "/pages",          Handlers.V1.Pages, :create
    put  "/pages/:page_id" when id == 1,
                            Handlers.V1.Pages, :update_only_one
    get  "/pages/:page_id", Handlers.V1.Pages, :show

    # Auto-create a full set of routes for resources
    #
    resource :users,        Handlers.V1.User, arg: :user_id
    #
    # Generates:
    #
    # get     "/users",           Handlers.V1.User, :index
    # post    "/users",           Handlers.V1.User, :create
    # get     "/users/:user_id",  Handlers.V1.User, :show
    # put     "/users/:user_id",  Handlers.V1.User, :update
    # patch   "/users/:user_id",  Handlers.V1.User, :patch
    # delete  "/users/:user_id",  Handlers.V1.User, :delete
    #
    # options "/users",           "HEAD,GET,POST"
    # options "/users/:_user_id", "HEAD,GET,PUT,PATCH,DELETE"
  end

  # An updated version of the AP
  version "2" do
    get  "/",               Handlers.V2.Pages,  :index
    post "/pages",          Handlers.V2.Pages,  :create
    get  "/pages/:page_id", Handlers.V2.Pages,  :show
    put  "/pages/:page_id", Handlers.V2.Pages,  :update

    raw :trace, "/trace",   Handlers.V2.Tracer, :trace

    resource :users,        Handlers.V2.User
    resource :groups,       Handlers.V2.Group
  end
end

get/3, post/3, put/3, patch/3, delete/3, options/2, and any/3 are already built-in as described. resource exists but will need modifications to create everything as noted.

raw/4 allows for using custom HTTP methods, allowing your application to be HTTP spec compliant.

version/2 will need to be created outright. Will allow requests to contained endpoints when version exists in either Accepts header or URL (which ever is defined in app config).

Extra routes will need to be added for *.json, *.xml, etc. requests for optionally specifying desired content type without the use of the Accepts header. These should match parsing/rendering abilities of your application.

Configuration

TBD.

License

HttpRouter is released under the MIT License.

See LICENSE for details.