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ruby-on-rails - 如何将自定义列添加到数据表？

问题描述

我在用

gem 'jquery-datatables-rails', '3.4.0'
gem 'ajax-datatables-rails'

我的数据表看起来像 在此处输入图像描述

这个表的我的 CoffeeScript 看起来像

# Datatables
$ ->
  table = $('#qr-submissions-table').dataTable
    dom: 'C<"clear">lfrtip'
    processing: true
    serverSide: true
    ajax: $('#qr-submissions-table').data('source')    
    pagingType: 'full_numbers'
    columns: [
      {data: 'custom_columns'}
      {data: 'delivery_number' }
      {data: 'qpi_department' }     
      {data: 'qr_client' }
      {data: 'date_submitted'}
      {data: 'bay_number' }
      {data: 'submitted_by'}
      {data: 'delivery_note'}
      {data: 'ops' }
    ]
    "order": [[ 3, "desc" ]]
    columnDefs: [
      { "orderable": false, "targets": [3, 7, 8]}, 
      {"targets": 1, visible: ($("#delivery_number_show").val() == 'true')}, 
      {"targets": 2, visible: ($("#division_show").val() == 'true')}, 
      {"targets": 3, visible: ($("#client_show").val() == 'true')}, 
      {"targets": 4, visible: ($("#scan_time_show").val() == 'true')}, 
      {"targets": 5, visible: ($("#delivery_location_show").val() == 'true')}
      {"targets": 6, visible: ($("#submitted_by_show").val() == 'true')}, 
      {"targets": 7, visible: ($("#delivery_note_show").val() == 'true')}, 
      {"targets": 8, visible: ($("#photo_show").val() == 'true')}, 
   
    ]

这里的自定义列字段是哈希，如'{ "name1" : "value1", "name2" : "value2" }'.. 我如何将其显示为 coulm 名称和值。name1 和 name2 将是列标题，value1 和 value2 将是对应的行值。每行对于“value1”和“value2”都有不同的值。有没有办法做到这一点？请帮忙？

标签： ruby-on-railsdatatablesjquery-datatables-rails

解决方案

不幸的是，我不知道 Ruby-on-rails，但我知道 jQuery DataTables。

如果您的 JSON 响应如下所示：

[{ "Id": "1", "Name": [{ "FirstName": "Tiger", "LastName": "Nixon"}], "Position": "System Architect", "Office": "Edinburgh", "Age": 61 },
{ "Id": "2", "Name": [{ "FirstName": "Garrett", "LastName": "Winters"}], "Position": "Accountant", "Office": "Tokyo", "Age": 63 },
{ "Id": "3", "Name": [{ "FirstName": "Ashton", "LastName": "Cox"}], "Position": "Jr. Technical Author", "Office": "San Francisco", "Age": 66 }];

并且您的列的名称将是固定的（在您的示例中：“name1”和“name2”），您可以执行以下操作（我将在同一个示例中为您提供两种实现方式）：

var jsonData = [ 
    { "Id": "1", "Name": [{ "FirstName": "Tiger", "LastName": "Nixon"}], "Position": "System Architect", "Office": "Edinburgh", "Age": 61 },
  { "Id": "2", "Name": [{ "FirstName": "Garrett", "LastName": "Winters"}], "Position": "Accountant", "Office": "Tokyo", "Age": 63 },
  { "Id": "3", "Name": [{ "FirstName": "Ashton", "LastName": "Cox"}], "Position": "Jr. Technical Author", "Office": "San Francisco", "Age": 66 }];

var table = $('#example').DataTable({
  LengthChange: false,
  data: jsonData,
  columns: [
      { data: 'Id'},
      { data: 'Name[0].FirstName' }, // 1st Way
      { 
         data: null,
         title: "LastName",
         render: function(data, type, full, meta) { // 2nd Way
            return data.Name[0].LastName;
         }
      },
      { data: 'Position' },
      { data: 'Office' },
      { data: 'Age' }
    ]
});
<link href="https://cdn.datatables.net/1.10.21/css/jquery.dataTables.min.css" rel="stylesheet"/>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://cdn.datatables.net/1.10.21/js/jquery.dataTables.min.js"></script>

<table id="example" class="table display" style="width:100%">
  <thead>
  <tr>
      <th>Id</th>
      <th>FirstName</th>
      <th>LastName</th>
      <th>Position</th>
      <th>Office</th>
      <th>Age</th>
    </tr>
  </thead>
</table>

注意：在这种情况下，我正在尝试使用键名模拟您的自定义列字段

但是，如果您的列是动态的（名称可能会更改），您需要执行以下操作： 示例

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