Wie erstellt man einen neuen Datensatz auf has_one für zwei Modelle gleichzeitig auf Rails?

Question

Ich muss einen neuen Datensatz für zwei Modelle, die zu demselben Modell gehören, für eine Methode erstellen.

Das ist mein Modell

class Promotion < ApplicationRecord 
    has_one :promotion_thai ,dependent: :destroy 
    has_one :promotion_eng ,dependent: :destroy 
end 

class PromotionThai < ApplicationRecord 
    belongs_to :promotion 

    mount_uploader :long_banner, PromotionImageUploader 
    mount_uploader :square_banner, PromotionImageUploader 
    mount_uploader :details_image, PromotionImageUploader 

    validates :promotion_id, presence: true 
    validates :title, presence: true 
    validates :description, presence: true 

    #validates :long_banner, presence: true 
    #validates :square_banner, presence: true 

end 

class PromotionEng < ApplicationRecord 
    belongs_to :promotion 

    mount_uploader :long_banner, PromotionImageUploader 
    mount_uploader :square_banner, PromotionImageUploader 
    mount_uploader :details_image, PromotionImageUploader 

    validates :promotion_id, presence: true 
    validates :title, presence: true 
    validates :description, presence: true 

    validates :long_banner, presence: true 
    validates :square_banner, presence: true 

end 

Diese Methode mein Controller ist

def create 
    promotion = Promotion.new 
    promotion.build_promotion_eng(promotion_eng_params).build_promotion_thai(promotion_thai_params) 

    if promotion.save 
     flash[:success] = 'Success Created Promotion' 
     redirect_to admins_promotions_path 
    else 
     errors_message = promotion.errors.full_messages.join(', ') 

     redirect_to admins_promotion_new_path, :flash => { :error => errors_message } 
    end 
    end 

Dann, wenn ich das Formular abschicken ich diesen Fehler

undefined method `build_promotion_thai' for #<PromotionEng:0x007f9fdbcb0250> Did you mean? build_promotion 

Auf dieser Linie

immer bekam

promotion.build_promotion_eng(promotion_eng_params).build_promotion_thai(promotion_thai_params) 

Wie kann ich diese Art von Problem beheben?

Danke!

Answer 1

Das liegt daran, build_promotion_eng(promotion_eng_params) gibt eine PromotionEng-Instanz zurück.

Dies sollte gut funktionieren.

promotion.build_promotion_eng(promotion_eng_params) 
promotion.build_promotion_thai(promotion_thai_params)