Ruby On Rails; undefined method `comments'

Question

I'm trying to create a comment association with the user table, but when I go to the rails console and do try to see if it works, it gives me the following error:

user = User.first
user.comments

undefined method `comments'

Below is the code that i'm using.

  class CreateComments < ActiveRecord::Migration[5.1]
   def change
    create_table :comments do |t|
      t.text :description
      t.references :user, index: true, foreign_key: true

      t.timestamps
    end
   end
  end

class CreateUsers < ActiveRecord::Migration[5.1]
  def change
    create_table :users do |t|
    t.string :username
    t.string :email

    t.timestamps
  end
 end
end


class Comment < ApplicationRecord
  belongs_to :user
end

class User < ApplicationRecord
  has_many  :comments
end

Im using the latest version of ruby.

Thank you!

Answer 1

I don't see any reason for undefined method error, may be you have pending migrations run this command

rails db:migrate