用form_for發送數據到控制器

Question

比方說我有一個型號Factory其中has_manyEmployees。

在我看來，我有以下幾點：

%h3 
    = @factory.name 

%h3 Add new employee : 
= form_for :employee do |f| 
    .field 
    = f.label "Name :" 
    = f.text_field :name 
    .field 
    = f.label "Age :" 
    = f.text_field :age 
    .actions 
    = f.submit 'Save new employee' 

在我的控制，我想中檢索變量@factory這是在視圖的id。我怎樣才能訪問它？

謝謝。

Answer 1

雙向做到這一點首先被創建嵌套路由http://guides.rubyonrails.org/routing.html#nested-resources

resources :factories do 
    resources :employees 
end 

或爲創建hidden_​​field和其值分配給它

Answer 2

在呈現形式創建@employee實例的控制器，關聯到@factory

class EmployeesController < ApplicationController 
    def new 
    @factory = Factory.find params[:id] 
    @employee = @factory.employees.build 
    end 
end 

而且在視圖中使用實例@employee而不是:employee

= form_for @employee do |f| 
    ...