从自定义控制器向模型插入数据 Rails

Question

我为名为 "Charge" 的模型创建了脚手架，但我想从我创建的自定义控制器向模型插入数据 "Checkout"。

我有以下代码：

#in the routes.rb
get "checkout/pay", to: 'checkout#index'

#in the app/controllers/checkout_controller.rb
 def index
   @charge = Charge.new
 end

#in the app/views/checkout/index.html.erb

<%= form_for(@charge, url: charges_path, method: :post ) do |f| %>


  <% if @charge.errors.any? %>
    <div id="error_explanation">
  <h2><%= pluralize(@charge.errors.count, "error") %> prohibited this charge from being saved:</h2>

    <ul>
    <% @charge.errors.full_messages.each do |msg| %>
     <li><%= msg %></li>
    <% end %>
    </ul>
   </div>
 <% end %>

  <div class="title">
    <h1>shipment</h1>
  </div>

  <div class="large-12 columns">
    <%= f.text_field :name, placeholder: "name", maxlength: "20", class: "radius" %>
  </div>
  <div class="large-12 columns">
    <%= f.text_field :address, placeholder: "address", class: "radius" %>
  </div>
  <div class="large-12 columns">
    <%= f.text_field :email, placeholder: "email", class: "radius" %>
  </div>
  <hr>


  <%= f.submit "buy", class: "button green radius small expand" %>
 <% end %>


#in the app/controllers/charges_controller.rb

 def create
   @charge = Charge.new(id: "523dd8f6aef8784386000001", amount: 60000, livemode: false, created_at: 1379784950, status: "paid", currency: "MXN", description: "Pizza", reference_id: "9839-wolf_pack", failure_code: "none", failure_message: "none", name: params[:name], address: params[:address], email: params[:email], ship_number: "5678sdf7sd5f6")
   @charge.save
   respond_with(@charge)
 end

#in the app/models/charge.rb
 validates :name, :address, :email, presence: true

为了测试，我在创建方法中用默认值填充了一些数据。在表格 ('/checkout/pay') 中，我手动填写了 :name, :address, :email 数据，但将我重定向到 new_charge_path 并告诉我：名字不能为空地址不能为空邮箱不能为空

尝试从 html 视图中的表单获取参数时出现错误？

Answer 1

您正在使用 form_for 视图助手，根据 rails 约定，控制器获得一个嵌套哈希 params[:charg]，其中包含在表单中设置的收费属性。

所以，在你的控制器上你必须调用：

@charge = Charge.new(name: params[:charge][:name], address: params[:charge][:address], email: params[:charge][:email])

从自定义控制器向模型插入数据 Rails

Inserting data to a model from a custom controller Rails

ruby

ruby-on-rails

ruby-on-rails-4