Facebook Messenger - Node to Ruby on Rails - Example

Question

New to Rails.

On Getting started for Facebook Messenger there is a simple script in node that can be used to send message from your app to Messenger. Can someone help on how can we implement it in Ruby on Rails.

I want to create a method in my controller that can send the message. Below is the code from Facebook, I am not sure how to implement the same in Rails.

var token = "<page_access_token>";

function sendTextMessage(sender, text) {
  messageData = {
    text:text
  }
  request({
    url: 'https://graph.facebook.com/v2.6/me/messages',
    qs: {access_token:token},
    method: 'POST',
    json: {
      recipient: {id:sender},
      message: messageData,
    }
  }, function(error, response, body) {
    if (error) {
      console.log('Error sending message: ', error);
    } else if (response.body.error) {
      console.log('Error: ', response.body.error);
    }
  });
}

Replace the comment above with

sendTextMessage(sender, "Text received, echo: "+ text.substring(0, 200));

Here is my controller to receive the message.

def apply_message
        @message = params["entry"][0]["messaging"][0]["message"]["text"]
        @sender_id = params["entry"][0]["messaging"][0]["sender"]["id"]
        if User.where(:fb_id => @sender_id.to_s ).present? #if sender exists
        # Send him a message saying "Hello World" Just like below
        else
                uri = URI.parse("https://graph.facebook.com/v2.6/me/messages?access_token=tocken_goes_here")
                http = Net::HTTP.new(uri.host, uri.port)
                json_data={
                    "recipient":{
                        "id":"@sender_id"
                    }, 
                    "message":{
                        "text":"Do you have an account with us?"
                    }
                }
                http.use_ssl = true
                http.verify_mode = OpenSSL::SSL::VERIFY_NONE
                req = Net::HTTP::Post.new(uri.request_uri)
                req.set_form_data(json_data)
                response = http.request(req)

        end

    end

score 2 · Accepted Answer · answered Apr 17 '16 at 17:34

Create an FB Model:

class FacebookBot

  def send_message(data)
    url = URI.parse("https://graph.facebook.com/v2.6/me/messages?access_token=Token_here")

    http = Net::HTTP.new(url.host, 443)
    http.use_ssl = true
    http.verify_mode = OpenSSL::SSL::VERIFY_NONE #only for development.
    begin
      request = Net::HTTP::Post.new(url.request_uri)
      request["Content-Type"] = "application/json"
      request.body = data.to_json
      response = http.request(request)
      body = JSON(response.body)
      return { ret: body["error"].nil?, body: body }
    rescue => e
      raise e
    end
  end

  def send_text_message(sender, text)
    data = {
      recipient: { id: sender },
      message: { text: text }
    }
    send_message(data)
  end

  def send_generic_message(sender, mes)
    data = {
      recipient: { id: sender },
      message: mes
    }
    send_message(data)
  end
end

and now I can send message just with this:

res = FacebookBot.new.send_text_message(sender, "Hi thanks for messaging")

Enjoy. :)

Facebook Messenger - Node to Ruby on Rails - Example

1 Answers1