how to display records that are only connected to a single user

Question

I hope you can help me here.

I want the users only to be able to see the appointments to the courses they are assigned to. How do I set it up in the controllers?

I got 3 models:

class Appointment < ActiveRecord::Base  
  belongs_to :user
  belongs_to :course
end

class User < ActiveRecord::Base  
  has_many :courses, :through => :assignments
  has_many :appointments
end

class Course < ActiveRecord::Base
  has_many :users, :through => :assignments
  has_many :appointments
end

Answer 1

You should just be able to do:

@appointments = current_user.appointments

Or am I missing something in your question?

---

Edit: A more detailed example:

In your controller (let's say it's AppointmentsController):

class AppointmentsController < ApplicationController

  def index
    @appointments = current_user.appointments
  end

end

Then, in the corresponding view (appointments/index.html.erb):

<%- @appointments.each do |appointment| -%>
  <%= appointment.name %>
<%- end -%>

This is all based on the assumption you have current_user available, but since you've tagged the question with 'devise', I'm assuming you do.