friends_controller.rb

class FriendsController < ApplicationController
  def create
    @friend = find_friend
    current_user.request_friend(@friend)
    render :text => "Заявка отправлена"
  end

  def requests
    @friends_requested = current_user.friends_requested
  end

  def index
    @friends = current_user.friends
  end

  def accept
    @friend = find_friend
    current_user.accept_friend_request(@friend)
    render :text => "Добавлен в друзья"
  end

  def decline
    @friend = find_friend
    current_user.decline_friend_request(@friend)
    render :text => "Заявка отклонена"
  end

  def destroy
    @friend = find_friend
    current_user.destroy_friend(@friend)
    render :text => "Убран из списка друзей"
  end

  private

  def find_friend
    User.find(params[:id])
  end
end