【jQuery EasyUI系列】创建CRUD数据网格

在上一篇中我们使用对话框组件创建了CRUD应用创建和编辑用户信息。本篇我们来创建一个CRUD数据网格DataGrid

步骤1，在HTML标签中定义数据网格（DataGrid）

 1 <table id="dg" title="My Users" style="550px;height:250px"
 2         toolbar="#toolbar" idField="id"
 3         rownumbers="true" fitColumns="true" singleSelect="true">
 4     <thead>
 5         <tr>
 6             <th field="firstname" width="50" editor="{type:'validatebox',options:{required:true}}">First Name</th>
 7             <th field="lastname" width="50" editor="{type:'validatebox',options:{required:true}}">Last Name</th>
 8             <th field="phone" width="50" editor="text">Phone</th>
 9             <th field="email" width="50" editor="{type:'validatebox',options:{validType:'email'}}">Email</th>
10         </tr>
11     </thead>
12 </table>
13 <div id="toolbar">
14     <a href="#" class="easyui-linkbutton" iconCls="icon-add" plain="true" onclick="javascript:$('#dg').edatagrid('addRow')">New</a>
15     <a href="#" class="easyui-linkbutton" iconCls="icon-remove" plain="true" onclick="javascript:$('#dg').edatagrid('destroyRow')">Destroy</a>
16     <a href="#" class="easyui-linkbutton" iconCls="icon-save" plain="true" onclick="javascript:$('#dg').edatagrid('saveRow')">Save</a>
17     <a href="#" class="easyui-linkbutton" iconCls="icon-undo" plain="true" onclick="javascript:$('#dg').edatagrid('cancelRow')">Cancel</a>
18 </div>

步骤2、使用可编辑的数据网格（DataGrid）

1 $('#dg').edatagrid({
2     url: 'get_users.php',
3     saveUrl: 'save_user.php',
4     updateUrl: 'update_user.php',
5     destroyUrl: 'destroy_user.php'
6 });

我们应该提供 url saveUrl updateUrl destoryUrl属性来编辑数据网格DataGrid

url：从服务器检索用户数据

saveUrl:保存一个新的用户数据

updateUrl:更新一个已存在的用户数据

destroyUrl:删除一个已存在的用户数据

步骤3、写服务器处理代码

保存一个新的用户 save_user.php

 1 $firstname = $_REQUEST['firstname'];
 2 $lastname = $_REQUEST['lastname'];
 3 $phone = $_REQUEST['phone'];
 4 $email = $_REQUEST['email'];
 5 
 6 include 'conn.php';
 7 
 8 $sql = "insert into users(firstname,lastname,phone,email) values('$firstname','$lastname','$phone','$email')";
 9 @mysql_query($sql);
10 echo json_encode(array(
11     'id' => mysql_insert_id(),
12     'firstname' => $firstname,
13     'lastname' => $lastname,
14     'phone' => $phone,
15     'email' => $email
16 ));

更新一个已存在用户update_user.php：

 1 $id = intval($_REQUEST['id']);
 2 $firstname = $_REQUEST['firstname'];
 3 $lastname = $_REQUEST['lastname'];
 4 $phone = $_REQUEST['phone'];
 5 $email = $_REQUEST['email'];
 6 
 7 include 'conn.php';
 8 
 9 $sql="update users set firstname='$firstname',lastname='$lastname',phone='$phone',email='$email' where id=$id";
10 @mysql_query($sql);
11 echo json_encode(array(
12     'id' => $id,
13     'firstname' => $firstname,
14     'lastname' => $lastname,
15     'phone' => $phone,
16     'email' => $email
17 ));

删除一个已存在用户destroy_user.php

1 $id = intval($_REQUEST['id']);
2 
3 include 'conn.php';
4 
5 $sql = "delete from users where id=$id";
6 @mysql_query($sql);
7 echo json_encode(array('success'=>true));