TypeError: ноль не символ визуализации: JSON

Question

Вот мой код

def get_suppliers 
    supplier= Supplier.where(:user_id=>params[:supplier][:user_id],:is_deleted => "false") 
    if supplier.present?   
     render :json => {"status_code" => "200", :suppliers => supplier} 
     else 
     render :json => {"status_code" => "400", :suppliers => "Record not found"} 
     end  
    end 

// поставщик значение

#<ActiveRecord::Relation [#<Supplier id: 69, supplier_name: "raj", food_business_no: "", mobile: "9154441222", work_phone: "9155551222 ", email_id: "raj@aol.in", date: "2014-11-18", other_information: "--", street_name: "VGP ", image_user_id: 1140, province: "", city: "", pincode: " ", state: "Australian capital teritory", country: "Australia", user_id: 42, supplier_user_id: 4, is_deleted: false, deleted_at: nil, created_at: "2014-11-18 09:26:56", updated_at: "2014-11-18 09:26:56">, #<Supplier id: 72, supplier_name: "tester", food_business_no: "", mobile: "3548621102", work_phone: "3549928500 ", email_id: "tester@asdol.in", date: "2014-11-21", other_information: "--", street_name: "sdf ", image_user_id: 1166, province: "", city: "", pincode: " ", state: "Australian capital teritory", country: "Australia", user_id: 42, supplier_user_id: 5, is_deleted: false, deleted_at: nil, created_at: "2014-11-21 11:49:15", updated_at: "2014-11-21 11:49:15">, #<Supplier id: 74, supplier_name: "bobby", food_business_no: "", mobile: "9792626506", work_phone: "9852525252 ", email_id: "bobby@aol.com", date: "2014-11-27", other_information: "--", street_name: "VIP ", image_user_id: 1175, province: "", city: "", pincode: " ", state: "Australian capital teritory", country: "Australia", user_id: 42, supplier_user_id: 7, is_deleted: false, deleted_at: nil, created_at: "2014-11-27 06:49:25", updated_at: "2014-11-27 06:49:25">] 

Я получаю TypeError : nil is not a symbol на этой линии

render :json => {"status_code" => "200", :suppliers => supplier} 

в мой сервер производства, но хорошо работает на моем локальном хосте, сервере разработки.

Вот лог:

I, [2014-12-13T07:32:18.950505 #8580] INFO -- : Started POST "/get_suppliers" for 182.73.35.250 at 2014-12-13 07:32:18 +0000 
I, [2014-12-13T07:32:18.951363 #8580] INFO -- : Processing by SuppliersController#get_suppliers as */* 
I, [2014-12-13T07:32:18.951436 #8580] INFO -- : Parameters: {"access_token"=>"xxxxxx", "supplier"=>{"user_id"=>"42"}} 
I, [2014-12-13T07:32:18.954972 #8580] INFO -- : Completed 500 Internal Server Error in 3ms 
F, [2014-12-13T07:32:18.956617 #8580] FATAL -- : 
TypeError (nil is not a symbol): 
    app/controllers/suppliers_controller.rb:15:in `get_suppliers' 

Answer 1

Я решил эту проблему, это вызвано тем, что там нет первичного ключа в стол,

Это сработало после добавления первичного ключа в модель

class Supplier < ActiveRecord::Base 
    self.primary_key = 'id' 
    ...... 
    .... 
end 

Answer 2

supplier является локальным переменным объектом. Пожалуйста, изменяет свой код Как

def get_suppliers 
@supplier= Supplier.where(:user_id=>params[:supplier][:user_id],:is_deleted => "false") 
if @supplier.present?   
    render :json => {"status_code" => "200", :suppliers => @supplier} 
    else 
    render :json => {"status_code" => "400", :suppliers => "Record not found"} 
    end  
end 

К сожалению моего плохого

Ну, может быть, вы должны изменить status_code к :status