Creating an ActiveRecord with a foreign key outside default_scope throws a Validation error

Question

Creating a product with warehouse_x (foreign key to Warehouse table) that is outside default_scope i.e. warehouse_x has warehouse_type **damage**.

Unable to create record and throwing error.

ActiveRecord::RecordInvalid: Validation failed: Warehouse must exist

Schema

create_table "product", force: :cascade do |t|
    t.float "unit_price"
    t.bigint "warehouse_id", null: false

    ...

    t.index ["warehouse_id"], name: "index_stock_details_on_warehouse_id"
  end

create_table "warehouses", force: :cascade do |t|
    t.string "warehouse_name"

    ...

    t.integer "warehouse_type", default: 0
  end

Warehouse model (warehouse.rb)

class Warehouse < ApplicationRecord
  has_many :products

  default_scope {where(warehouse_type: :ok_product)}

  scope :damaged, -> {unscoped.where(warehouse_type: :damage)}

  enum warehouse_type: {
    ok_product: 0,
    damage_product: 2
  }

end

Product model (product.rb)

class Product < ApplicationRecord
    belongs_to :warehouse
end

How can I create a record with foreign key outside default (relation table).

Answer 1

Is validation generated by your belongs_to association, you can disable like this:

class Product < ApplicationRecord
  belongs_to :warehouse, optional: true
end