message system in ruby on rails

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1- Create message model:- 

rails g model message sender_id:integer recepient_id:integer body:text

2- Define Assosciation and scopes:- 

class Message < ActiveRecord::Base
    belongs_to :sender,
     :class_name => 'User',
     :foreign_key => 'sender_id'
    belongs_to :recepient,
     :class_name => 'User',
     :foreign_key => 'recepient_id'

    scope :conversations, lambda{|sender_id,recepient_id| where('sender_id = ? AND recepient_id = ? ',sender_id, recepient_id ).order("created_at DESC")}

    scope :friends_conversations, lambda{|recepient_id,sender_id| where('sender_id = ? AND recepient_id = ? ',sender_id, recepient_id ).order("created_at DESC")}
end

3- User model:-

class User < ActiveRecord::Base
 has_many :received_messages,
 :class_name => 'Message',
 :foreign_key => 'recepient_id'
 has_many :sent_messages,
 :class_name => 'Message',
 :foreign_key => 'sender_id'
end

4- Return Conversations:- 

conversations = Message.conversations(current_user.id,params[:friend_id])
        friends_conversations = Message.friends_conversations(current_user.id,params[:friend_id])
        render :json =>  { status: 200,:conversations => (conversations + friends_conversations).sort_by(&:created_at) }

5- Return messages:-
messages = user.received_messages
sent_messages = user.sent_messages



 
Experienced Ruby on Rails and Web Developer having 11+ years experience in Ruby & Ruby on Rails framework, TTD, Rspec. Expert on Git, SVN , Git Hook, Bitbucket. I use MySQL, MongoDB , PostgreSQL & Sqlite for Database Management. In front-end development I use HTML5 / HAML, CSS3 / SCSS, javascript / coffeescript. I also know about the deploy the applications on VPS Server i.e AWS EC2, Heroku, Ditital Ocean, Hostgator, Site5, BlueHost, AWS Load Balancing, Elastic Beanstalk, AWS S3 e.t.c ☆ Frameworks ☆ Ruby on Rails, Sinatra ☆ Database ☆ - PostgreSQL, MySQL, SQLite, - MongoDB, Amazon DynamoDB,AWS RDS. ☆ Front end Techniques ☆ - ReactJS, Angular js, Node js, Javascript, JQuery, HTML, CSS - Twitter Bootstrap, Coffeescript. Why hire me? * Master degree in Computer Science * 6 years professional experiences and 10+ projects completed * Available all day long, 7 days/24 hours * Good communication skills with fluent English * Self-motivated, fast-learner and "I can do" mind * Quality insurance and fast delivery

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