Ruby Basics, Methods, Controller actions

me_controller.rb

class MeController < ApplicationController
  def show
    if session[:messages].blank?
      session[:messages] = []
    end
 
    if session[:message_count].blank?
      session[:message_count] = 0
    end
 
    # byebug
 
    if params[:message].present?
      # must have in gemfile & bundle: gem 'twilio-ruby', '~> 3.12'
      client = Twilio::REST::Client.new(
        'AXXXXXXX', # sid
        'cXXXXXXX') # auth token
 
      client.messages.create(
        from: '+15555555555', # put your twilio outgoing number here
        to: "+1#{params[:phone]}", # assumes 10 digits, no dashes or spaces
        body: params[:message]
      )
 
      puts "sent message #{params[:message]} to #{params[:phone]}"
 
      session[:message_count] = session[:message_count] + 1
      session[:messages].push(params[:message])
    end
  end
end

show.html.erb

<% if params[:message].present? %>
  <h5>Sent message: <%= params[:message] %></h5>
<% end %>
 
<h2>Send a message</h2>
<form>
  <p><input type="text" name="phone" placeholder="e.g. 5551231235" /></p>
  <p><textarea name="message" rows="8" cols="40"></textarea></p>
  <!--
  <select name="carrier">
    <option>att</option>
    <option>sprint</option>
    <option>verizon</option>
    <option>tmobile</option>
  </select>
  -->
  <p><input type="submit" value="Send!"></p>
</form>
 
<p>Messages Sent: <%= session[:message_count] %></p>
 
<ul>
  <% session[:messages].each do |message| %>
    <li><%= message %></li>
  <% end %>
</ul>