मिला ActiveRecord :: एसोसिएशन टाइप टाइप करें मॉडल पर सहेजें

Question

मुझे अपने बाकी एपीआई के साथ मॉडल सहेजने में समस्या मिली। मैं और कई कार्यों के साथ एक कार्ड मॉडल एक ग्राहक संबंधित हैं:

class Card < ActiveRecord::Base 
    belongs_to :customer 

    has_many :card_tasks 
    has_many :tasks, :through => :card_tasks 

    accepts_nested_attributes_for :tasks 
    accepts_nested_attributes_for :card_tasks 
    accepts_nested_attributes_for :customer 

end 


class CardTask < ActiveRecord::Base 
    belongs_to :task 
    belongs_to :card 

    accepts_nested_attributes_for :task 
    accepts_nested_attributes_for :card 
end 

class Task < ActiveRecord::Base 
    has_many :cards, :through => :card_tasks 
    has_many :card_tasks 
end 

जब मैं भेज इस तरह एक json:

{ 
    "card" = > { 
     "miscellaneous" = > "Obervations diverses", 
     "heater" = > "0", 
     "water_quality" = > "", 
     "customer" = > { 
      "id" = > "2", "house_name" = > "house_name2", "city" = > "city_2", "lastname" = > "lastname2", "sci" = > "sci2", "postal_code" = > "potal_code_2", "address_line_1" = > "address_line_2", "updated_at" = > "2012-03-05 18:20:57 +0000", "created_at" = > "2012-03-05 18:20:54 +0000", "firstname" = > "firstname2", "address_line_2" = > "address_line_3", "water_used" = > "0" 
     }, 
     "tasks" = > [ 
      { 
      "title" = > "Nettoyage ligne eau", "id" = > "6", "updated_at" = > "2012-02-17 08:40:47 +0000", "created_at" = > "2012-02-17 08:40:47 +0000" 
      }, 
      { 
      "title" = > "Surveillance", "id" = > "4", "updated_at" = > "2012-02-17 08:40:47 +0000", "created_at" = > "2012-02-17 08:40:47 +0000" 
      } 
     ] 
    } 
} 

अपना कार्य बनाएँ:

def create 
     card = Card.new(params[:card]) 
     if (card.save) 
     respond_with({ :card => card} , :location => nil, status: :created) and return 
     end 
     respond_with({ :errors => card.errors }, :location => nil, status: :unprocessable_entity) and return 
    end 

यह कर रहे हैं, मुझे एक मिला:

ActiveRecord::AssociationTypeMismatch (Task(#70249431354580) expected, got ActiveSupport::HashWithIndifferentAccess(#70249421573300)): 
    app/controllers/cards_controller.rb:14:in `new' 
    app/controllers/cards_controller.rb:14:in `create' 

डब्ल्यू टोपी क्या मैंने गलत किया?

Answer 1

समस्या JSON संरचना में है, रेल tasks_attributes की अपेक्षा करता है, tasks नहीं। विवरण के लिए this question देखें।