users_controller.rb

class UsersController < ApplicationController
  
  #Example of a common index route...Returns all users in json format
  def index
    users = User.all
    render json: users, include: [:user_friends]
  end
  
  #This will be our custom add_friend action
  def add_friend
    #logic to add a friend
    user = User.find(params[:id])
    byebug
  end
  
end