Question

我在使用导轨项目invoice更新accepts_nested_attributes_for的嵌套属性时遇到问题：

当我为每个项目选择数量时，它们都保存与第一个项目的值相同，例如：

在发票的表格中，我有3个不同的项目，每个项目有3个不同的数量。无论我为每个值选择什么值，记录总是与第一个项目的值一起保存。

这是控制器：

def edit
  @invoice = Invoice.find(params[:id])
  @printers = Printer.cheap_first
  (9-@invoice.invoice_items.size).times do
  @invoice.invoice_items.build
  end
end

def update
  @invoice = Invoice.find(params[:id])
  if @invoice.update(invoice_params) 
      flash[:notice] = "Invoice updated succesfully."
      redirect_to(:action =>'show')
  else
    render('edit')
  end
end

private
def invoice_params
  params.require(:invoice).permit(:client, :salesman, :discount, :organization, :address, :zp, :currency, :rate, invoice_items_attributes: [:id, :quantity, :printer_id, :_destroy])
end

以下是模型：

class Invoice < ActiveRecord::Base
  has_many :invoice_items, dependent: :destroy
  has_many :printers, :through => :invoice_items
  accepts_nested_attributes_for :invoice_items, reject_if: proc {|attributes| attributes['printer_id'].blank?}, allow_destroy: true
end

以下是视图：

<% z = 0 %>
<%= f.fields_for :invoice_items, remote: true do |ff| %>
<div id=<%="invoice_item_#{z}"%> class="hidden" >
    <div class="col-md-4 col-sm-6 col-xs-12">
    <h3><%="Printer #{z+1}"%></h3>
    <div class="form-group form-horizontal">
        <%= ff.label(:printer_id, "Printer:") %>
        <div class="input-group">
            <div class="input-group-addon">
                <i class="fa fa-cube fa-lg" aria-hidden="true"></i>
            </div>
            <%= ff.select(:printer_id, @printers.map { |s| [s.name, s.id] }, {:include_blank => 'Select a printer'},{:class => 'form-control'}) %>
        </div>              
        <%= ff.label(:quantity, "Quantity:") %>
        <div class="input-group">
            <div class="input-group-addon">
                <i class="fa fa-shopping-cart fa-lg" aria-hidden="true"></i>
            </div>
            <%= ff.select(:quantity, options_for_select(1..10),{}, {:class => 'form-control', :placeholder => 'Number'}) %>
        </div>          
    </div>
    </div>
    </div>
    <% z = z+1 %>
    <% end %>

在更新发票时，代码有什么问题或我在:quantity中实现更改所缺少的内容？

rails表单中的所有嵌套属性都保存为第一个的值

0 个答案: