【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="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));