【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）

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

步骤2、使用可编辑的数据网格（DataGrid）

 $('#dg').edatagrid({
     url: 'get_users.php',
     saveUrl: 'save_user.php',
     updateUrl: 'update_user.php',
     destroyUrl: 'destroy_user.php'
 });

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

 $firstname = $_REQUEST['firstname'];
 $lastname = $_REQUEST['lastname'];
 $phone = $_REQUEST['phone'];
 $email = $_REQUEST['email'];

 include 'conn.php';

 $sql = "insert into users(firstname,lastname,phone,email) values('$firstname','$lastname','$phone','$email')";
 @mysql_query($sql);
 echo json_encode(array(
     'id' => mysql_insert_id(),
     'firstname' => $firstname,
     'lastname' => $lastname,
     'phone' => $phone,
     'email' => $email
 ));

更新一个已存在用户update_user.php：

 $id = intval($_REQUEST['id']);
 $firstname = $_REQUEST['firstname'];
 $lastname = $_REQUEST['lastname'];
 $phone = $_REQUEST['phone'];
 $email = $_REQUEST['email'];

 include 'conn.php';

 $sql="update users set firstname='$firstname',lastname='$lastname',phone='$phone',email='$email' where id=$id";
 @mysql_query($sql);
 echo json_encode(array(
     'id' => $id,
     'firstname' => $firstname,
     'lastname' => $lastname,
     'phone' => $phone,
     'email' => $email
 ));

删除一个已存在用户destroy_user.php

 $id = intval($_REQUEST['id']);

 include 'conn.php';

 $sql = "delete from users where id=$id";
 @mysql_query($sql);
 echo json_encode(array('success'=>true));