Rails help - unknown attribute 'creator_id' for Event - ruby-on-rails

Question

class User < ApplicationRecord
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :validatable
has_many :events, foreign_key: :creator_id, class_name: "Event"
end
class Event < ApplicationRecord
belongs_to :creator, class_name: "User", foreign_key: :creator_id
end
When I go to the events/new route I get this error: unknown attribute 'creator_id' for Event. I have done the database migration, I have added before_action's.
def new
#event = current_user.events.build(event_params)
end
Any ideas?
Update:
Status Migration ID Migration Name
--------------------------------------------------
up 20210610064055 Create events
up 20210610070312 Devise create users
up 20210612072338 Add body title to event
up 20210612091329 Add foreign key
**Further updates as requested in the comment section. **
Migrations file:
class AddForeignKey < ActiveRecord::Migration[6.1]
def change
add_column :users, :creator_id, :integer
end
end
Database schema file:
create_table "events", force: :cascade do |t|
t.date "date"
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
t.string "title"
t.text "body"
end
create_table "users", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
t.integer "creator_id"
t.index ["email"], name: "index_users_on_email", unique: true
t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
end
Do I need to add a foreign key to the events table as well? I can see I have not done that which I believe is wrong...

Answer 1

A foreign key should be added to the table you're making a reference from. In this case you're making a reference from events to users. So creator_id would have to be added to events. And it references a specific users.id value. So you need to remove they foreign key from users and add it to events instead.
class AddForeignKey < ActiveRecord::Migration[6.1]
def change
add_column :events, :creator_id, :integer
end
end
Also, no need to specify the foreign key in the rails model specifically. The rails guides state:
By convention, Rails guesses that the column used to hold the foreign
key on this model is the name of the association with the suffix _id
added. The :foreign_key option lets you set the name of the foreign
key directly:
So
class Event < ApplicationRecord
belongs_to :creator, class_name: "User"
end
Would suffice