PhoenixFacebookMessenger

Phoenix Facebook Messenger is a library that easy the creation of facebook messenger bots.

Installation

def deps do
  [{:phoenix_facebook_messenger, "~> 0.2.0"}]
end

Requirements

• a Phoenix App with phoenix 1.1 and up

Usage

With Phoenix

You need to have a working phoenix app to use phoenix_facebook_messenger.

To create an echo back bot, do the following:

Create a new controller web/controller/test_controller.ex

defmodule TestController do
  use FacebookMessenger.Phoenix.Controller

  def message_received(msg) do
    text = FacebookMessenger.Response.message_texts(msg) |> hd
    sender = FacebookMessenger.Response.message_senders(msg) |> hd
    FacebookMessenger.Sender.send(sender, text)
  end
end

Add the required routes in web/router.ex

defmodule YourApp.Router do
  use YourApp.Web, :router

  # Add these two lines
  use FacebookMessenger.Phoenix.Router
  facebook_routes "/api/webhook", TestController
end

This defines a webhook endpoint at: http://your-app-url/api/webhook

Go to your config/config.exs and add the required configurations

config :facebook_messenger,
      facebook_page_token: "Your facebook page token",
      challenge_verification_token: "the challenge verify token"

To get the facebook_page_token and challenge_verification_token follow the instructions here

For the webhook endpoint use http://your-app-url/api/webhook

With plug

If you use plug in your project, then you need the plug version of facebook_messenger this can be found at found here.

Sample

• A sample facebook echo bot with plug can be found here. https://github.com/oarrabi/plug_facebook_echo_bot
• For the phoenix echo bot, https://github.com/oarrabi/phoenix_facebook_echo_bot