Question

在我的Rails应用程序中，我有一个名为customer creation的模块，customers表看起来像

create_table "customers", force: :cascade, options: "ENGINE=InnoDB      DEFAULT CHARSET=utf8" do |t|
t.string   "name"
t.string   "address"
t.string   "affiliate_id"
t.string   "category"
t.string   "domain"
t.string   "phone"
t.string   "contact"
t.string   "email",                           null: false
t.datetime "created_at",                      null: false
t.datetime "updated_at",                      null: false
t.text     "comments",          limit: 65535
 end

新客户的表格如下

  <%= form_for @customer do |f| %>
   <% if @customer.errors.any? %>
   <div id="error_explanation">
  <h2>
    <%= "#{pluralize(@customer.errors.count, "error")} prohibited this customer from being saved:" %>
    </h2>
    <ul>
    <% @customer.errors.full_messages.each do |msg| %>
      <li>
        <%= msg %>
      </li>
      <% end %>
      </ul>
     </div>
      <% end %>
     <div class="form-group">
     <%= f.label :name %>
     <%= f.text_field :name, class:"form-control" %>
     </div>
     <div class="form-group">
    <%= f.label :address %>
      <%= f.text_field :address, class:"form-control" %>
  </div>
    <div class="form-group">
   <%= f.label :affiliate_id %>
   <%= f.text_field :affiliate_id, class:"form-control" %>
  </div>
  <div class="form-group">
    <label> Category </label>
    <%= f.select  :category, [["Alexa Sills" ,"Alexa Sills" ],     ["Appliances","Appliances"],["Vehicles","Vehicles"],["Video Games","Video Games"],["Wine","Wine"],], {id: 'category', prompt: 'All Departments'},   class:"form-control" %>
  </div>
  <div class="form-group">
   <%= f.label :domain %>
   <%= f.text_field :domain, class:"form-control" %>
   </div>
   <div class="form-group">
   <%= f.label :phone %>
   <%= f.text_field :phone, class:"form-control" %>
   </div>
   <div class="form-group">
   <%= f.label :contact %>
     <%= f.text_field :contact, class:"form-control" %>
   </div>
   <div class="form-group">
     <%= f.label :email %>
     <%= f.text_field :email, class:"form-control" %>
    </div>
   <div class="form-group">
   <%= f.label "Additional Details" %>
    <%= f.text_area :comments, rows: 10, class:"form-control" %>
  </div>
   <div class="form-group">

<% f.fields_for :additional_fields do | ing | %>
  <%= ing.text_field :key, :size => 50 %>
  <%= ing.text_field :value, :size => 50 %>
  <% end %>
 </div>
  <div class="actions">
  <div class="row">
  <div class="col-md-5">
   <!--%= f.submit '+', :name => "add_additional_fields" %-->
    <span><%= f.submit 'Save', class: "btn btn-success" %></span>

  </div>

   </div>
   </div>
   <% end %>

如何在创建新客户时选择多个类别，以便我可以向该客户显示相关产品。请建议最好的方法。在此先感谢！

Answer 1

您可以使用 select2.js 来提供多个选项，您可以查看here

Answer 2

在类别下拉列表中使用multiple => true：

<div class="form-group">
 <label> Category </label>
 <%= f.select  :category, [["Alexa Sills" ,"Alexa Sills" ],["Appliances","Appliances"],["Vehicles","Vehicles"],["Video Games","Video Games"],["Wine","Wine"],], {id: 'category', prompt: 'All Departments'},{ :multiple => true},   class:"form-control" %>
</div>

Answer 3

您需要允许此阵列 1）使用:category[]而非仅:category

的观看次数

2）在你的控制器的私有方法中，还要在类别参数后添加括号“[]”。

你需要在你的html表单中使用multiple = true，如另一个人所提及的那样：）

选择表单中的多个类别

3 个答案: