Find on has_many :through - ruby-on-rails-3

Question

I have 3 models: Users, Customers, Issues. Below is the code for these models
Customer model:
class Customer < ActiveRecord::Base
belongs_to :se
belongs_to :user
has_many :issues
end
Issues model:
class Issue < ActiveRecord::Base
belongs_to :customer
end
Users model:
class User < ActiveRecord::Base
has_many :ses
has_many :customers
has_many :issues, :through => :customers
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
attr_accessible :email, :password, :password_confirmation, :remember_me, :first_name, :last_name, :cell_ph, :area
end
I would like to display only the issues that belong to a particular user. I am having problems making this work. Can someone suggest how I might create an index method that would accomplish this?
Here is my index method where I'm trying to use devise's current_user method to identify the user who's logged in to the view:
def index
#issues = Issue.where(:user == :current_user)
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => #issues }
end
end

Answer 1

You can't do what you're doing because an Issue doesn't have a user.
According to Rails guides (second example on http://guides.rubyonrails.org/association_basics.html#the-has_many-through-association session), you can nest the has_many using a has_many :through.
So you should be able to do this:
current_user.issues

Answer 2

In addition to Rodrigo's answer, you have some bad syntax on this line:
#issues = Issue.where(:user == :current_user)
That's never going to return any results because :user == :current_user is performing a comparison of two distinct Ruby Symbol objects. That always returns false, so your statement essentially equates to Issue.where(false).
This is closer to what you need:
#issues = Issue.where(:user => current_user)
This still doesn't fix the problem you have (Issue does not have many Users), but at least the meaning is correct.