Question

I am having an issue with the below code in one of my views:

<% if !@admin.emails.nil? %>
<% @admin.emails.each do |email| %>
  <tr>
    <td><%= email.email %></td>
  </tr>
<% end %>
<% end %>

This produces an error:

undefined method `emails' for nil:NilClass
Extracted source (around line #1):
1: <% @admin.emails.each do |email| %>
2:   <tr>
3:     <td><%= email.email %></td>
4:   </tr>

Admin Controller:

class AdminController < ApplicationController
end
def index
      @emails = Email.all
      respond_to do |format|
       format.html # index.html.erb
       format.xml  { render :xml => @emails }
     end
end

Email Model:

class Email < ActiveRecord::Base
  attr_accessible :email
  belongs_to :admin
  email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

  validates :email, :presence   => true,
                    :length     => { :maximum => 250 },
                    :format     => { :with => email_regex },
                    :uniqueness => { :case_sensitive => false }

end

Admin Model:

class Admin < ActiveRecord::Base
  has_many :emails
end

Any idea what could be wrong?

Answer 1

Your index method is not inside the AdminController… 🙂

And it defines @emails rather than @admin.