Question

I am learning Rails, so this is a very simple problem.

I am trying to associate Users<-Posts in the classic one-to-many style- user’s own posts.

Here are my models:

class Post < ActiveRecord::Base
  attr_accessible :body
  belongs_to :user  
end

class User < ActiveRecord::Base
  has_many :posts
  attr_accessible :email, :password, :password_confirmation
end

I also created the necessary migration:

class AddUserIdToPosts < ActiveRecord::Migration
  def self.up
    add_column :posts, :user_id, :integer
  end

  def self.down
    remove_column :posts, :user_id
  end
end

The problem I’m facing is trying to get rails to see all of this and correctly build the association.

When I call:

@user = User.first
@user.post.build

I get a

NoMethodError: undefined method `post' for #<User:0x10319fbc8>

What have I missed?

Answer 1

it should be user.posts but post.user