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Monthly Downloads: 19,798
Programming language: Elixir
License: MIT License
Tags: Authentication    
Latest version: v0.2.3

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README

Überauth Identity

Build Status Hex Version License

A simple username/password strategy for Überauth.

Installation

  1. Add :ueberauth_identity to your list of dependencies in mix.exs:

    def deps do
      [{:ueberauth_identity, "~> 0.2"}]
    end
    
  2. Add the strategy to your applications:

    def application do
      [applications: [:ueberauth_identity]]
    end
    
  3. Add Identity to your Überauth configuration:

    config :ueberauth, Ueberauth,
      providers: [
        identity: {Ueberauth.Strategy.Identity, [
          callback_methods: ["POST"]
        ]}
      ]
    
  4. Include the Überauth plug in your controller:

    defmodule MyApp.AuthController do
      use MyApp.Web, :controller
      plug Ueberauth
      ...
    end
    
  5. Create the request and callback routes if you haven't already:

    scope "/auth", MyApp do
      pipe_through :browser
    
      get "/:provider", AuthController, :request
      get "/:provider/callback", AuthController, :callback
      post "/identity/callback", AuthController, :identity_callback
    end
    
  6. Your request phase handler should implement a form or similar method to collect the required login information.

  7. The controller callback should validate login information using the Ueberauth.Auth struct:

    def identity_callback(%{assigns: %{ueberauth_auth: auth}} = conn, params) do
      case validate_password(auth.credentials) do
        :ok ->
          user = %{id: auth.uid, name: name_from_auth(auth), avatar: auth.info.image}
          conn
          |> put_flash(:info, "Successfully authenticated.")
          |> put_session(:current_user, user)
          |> redirect(to: "/")
        { :error, reason } ->
          conn
          |> put_flash(:error, reason)
          |> redirect(to: "/")
      end
    end
    

For an example implementation see the Überauth Example application.

Nested form attributes

Sometimes it's convenient to nest the returned params under a namespace. For example if you're using a "user" form, your params may come back as:

  %{ "user" => { "email" => "my@email.com" … }

If you're using a nested set of attributes like this you'll need to let Überauth Identity know about it. To do this set an option in your config:

    config :ueberauth, Ueberauth,
      providers: [
        identity: {Ueberauth.Strategy.Identity, [param_nesting: "user"]}
      ]

Params scrubbing

By default Überauth Identity will be changing empty values from the returned params to nil. If you want to disable that behaviour set the following option in your config:

    config :ueberauth, Ueberauth,
      providers: [
        identity: {Ueberauth.Strategy.Identity, [scrub_params: false]}
      ]

Calling

Depending on the configured url you can initial the request through:

/auth/identity/callback

License

Please see LICENSE for licensing details.


*Note that all licence references and agreements mentioned in the ueberauth_identity README section above are relevant to that project's source code only.