Modification and deletion of columns

In the previous chapters, we have added the function of adding columns and the display list of columns. On the display page, we have the following code:

<td>
    <a class="link-update" href="cate_edit.php?id=<?php echo $v['id'];?>">修改</a>
    <a class="link-del" onclick="return confirm('确定删除当前数据？')" href="cate_del.php?id=<?php echo $v['id']; ?>">删除</a>
</td>

Here we have obtained the corresponding column id, This requires receiving the ID on the corresponding page, and then through the operation of the database, the modification and deletion functions of the column can be completed.

First of all, we will do the modification function. Clicking the modification page will enter the following page:

Here we will add to the database The file is taken out, and then the data is displayed on the page. The code is as follows:

<?php
include_once('../../common/config.php');
$id=$_GET['id'];
$sql="select * from cate WHERE id='$id'";
$que=mysqli_query($conn,$sql);
$row=mysqli_fetch_assoc($que);

function getList($pid=0,&$result=array(),$spac=0)
{
    global $conn;
    $spac +=4;
    $sql = "select * from cate where pid = $pid";
    $res = mysqli_query($conn,$sql);
    while($rows=mysqli_fetch_array($res))
    {
        $rows["name"] = str_repeat('&nbsp;',$spac).'|--'.$rows["name"];
        $result[] = $rows;
        getList($rows['id'],$result,$spac);
    }
    return $result;
}
$rs=getList();
//print_r($rs);
//die;
?>

<!doctype html>
<html>
<head>
    <meta charset="UTF-8">
    <title>栏目修改--后台管理</title>
    <link rel="stylesheet" type="text/css" href="../../public/style/css/common.css"/>
    <link rel="stylesheet" type="text/css" href="../../public/style/css/main.css"/>
    <script type="text/javascript" src="../../public/style/js/libs/modernizr.min.js"></script>
    <script type="text/javascript" charset="utf-8" src="../../public/ueditor/ueditor.config.js"></script>
    <script type="text/javascript" charset="utf-8" src="../../public/ueditor/ueditor.all.min.js"></script>
    <script type="text/javascript" charset="utf-8" src="../../public/ueditor/lang/zh-cn/zh-cn.js"></script>
</head>
<body>
<?php include_once("../../common/top.php"); ?>

<div class="container clearfix">

    <?php include("../../common/left.php"); ?>
    <!--/sidebar-->
    <div class="main-wrap">

        <div class="crumb-wrap">
            <div class="crumb-list"><i class="icon-font"></i><a href="../index.php">首页</a><span class="crumb-step">></span><a class="crumb-name" href="cate_list.php">栏目管理</a><span class="crumb-step">></span><span>新增作品</span></div>
        </div>
        <div class="result-wrap">
            <div class="result-content">
                <form action="cate_upd.php" method="post" id="myform" name="myform" enctype="multipart/form-data">
                    <input type="hidden" name="id" value="<?php echo $id;?>">
                    <table class="insert-tab" width="100%">
                        <tbody>

                        <tr>
                            <th><i class="require-red">*</i>栏目标题：</th>
                            <td>
                                <input class="common-text required" id="title" name="name" size="50" value="<?php echo $row['name'];?>" type="text">
                            </td>
                        </tr>
                        <tr>
                            <th><i class="require-red">*</i>栏目类型：</th>
                            <td>
                                <select name="modelid" class="form-control">

                                   <option <?php if($row['modelid']==1){
                                       echo "selected";
                                   } ?> value='1'>文章模型</option>;

                                   <option <?php if($row['modelid']==2){
                                       echo "selected";
                                   } ?> value='2'>单页模型</option>;

                                   <option <?php if($row['modelid']==3){
                                       echo "selected";
                                   } ?> value='3'>产品模型</option>;

                                   <option <?php if($row['modelid']==4){
                                       echo "selected";
                                   } ?> value='4'>图片模型</option>;

                                    ?>
                                </select>
                            </td>
                        </tr>
                        <tr>
                            <th><i class="require-red">*</i>栏目状态：</th>
                            <td>
                                <input type='radio' <?php if($row['status']==1){
                                   echo "checked";
                                } ?> name='status' value='1'/>显示&nbsp&nbsp
                                <input type='radio' <?php if($row['status']==0){
                                    echo "checked";
                                } ?>  name='status' value='0'/>隐藏
                            </td>
                        <tr>
                            <th>关键词：</th>
                            <td>
                                <input class="common-text required" id="title" name="keywords" size="50" value="<?php echo $row['keywords'];?>" type="text">
                            </td>
                        </tr>
                        <tr>
                            <th>内容：</th>
                            <td><textarea name="content" class="common-textarea" id="content" cols="30" style="width: 98%;" rows="10"><?php echo $row['content'] ?></textarea></td>
                        </tr>
                        <tr>
                            <th></th>
                            <td>
                                <input class="btn btn-primary btn6 mr10" value="提交" type="submit">
                                <input class="btn btn6" onclick="history.go(-1)" value="返回" type="button">
                            </td>
                        </tr>
                        </tbody></table>
                </form>
            </div>
        </div>

    </div>
    <!--/main-->
</div>
</body>
</html>
<script type="text/javascript">

    UE.getEditor('content',{initialFrameWidth:1100,initialFrameHeight:400,});

</script>

The data is taken out, and then the data is sent to the corresponding page, received, and stored in the database using sql statements. Yes, of course you can also receive data on this page. Just set the action attribute of the form form to empty. The following is the code for receiving data and modifying the page.

<?php
include_once('../../common/config.php');

$id=$_POST['id'];
$name=$_POST['name'];
$modelid=$_POST['modelid'];
$status=$_POST['status'];
$keywords=$_POST['keywords'];
$content=$_POST['content'];

$sqlfy = "select * from cate WHERE id='$id'";
$fy_que=mysqli_query($conn,$sqlfy);
if(empty($fy_que)){
    echo "该分类不存在";
    exit;
}


if($_POST){
    $sql= "update cate set name='$name',modelid='$modelid',status='$status',keywords='$keywords',content='$content' where id='$id'";
//    print_r($sql);
//    die;
    $que=mysqli_query($conn,$sql);
    if($que){
        echo "<script>alert('修改成功');location.href='cate_list.php';</script>";
    }else{
        echo "<script>alert('修改失败，请检查后在提交');Location.href='cate_edit.php';</script>";
    }

}

Okay, this is our modification That's it, let's start our deletion.

Delete What needs to be noted here is that because our column has two-level categories, when you want to delete the top-level category, you must first delete the subcategories under the top-level category, otherwise deletion is not allowed. diamante is as follows:

<?php
include_once('../../common/config.php');

$id=$_GET['id'];
$fy_sql="select count(*) AS c from cate WHERE pid={$id}";
$fy_que=mysqli_query($conn,$fy_sql);
$fy_row=mysqli_fetch_array($fy_que);
if($fy_row['c']>0){
    $sql="delete from cate where id='$id' ";
    $que=mysqli_query($conn,$sql);
    if($que){
        echo"<script>alert('删除成功，返回首页');location.href='cate_list.php';</script>";
    }else{
        echo "<script>alert('删除失败');location='" . $_SERVER['HTTP_REFERER'] . "'</script>";
        exit;
    }
}else{
    echo "<script>alert('请先删除子类');location='" . $_SERVER['HTTP_REFERER'] . "'</script>";
}

Continuing Learning

new file

<?php include_once('../../common/config.php'); $id=$_GET['id']; $sql="select * from cate WHERE id='$id'"; $que=mysqli_query($conn,$sql); $row=mysqli_fetch_assoc($que); function getList($pid=0,&$result=array(),$spac=0) { global $conn; $spac +=4; $sql = "select * from cate where pid = $pid"; $res = mysqli_query($conn,$sql); while($rows=mysqli_fetch_array($res)) { $rows["name"] = str_repeat(' ',$spac).'|--'.$rows["name"]; $result[] = $rows; getList($rows['id'],$result,$spac); } return $result; } $rs=getList(); //print_r($rs); //die; ?> <!doctype html> <html> <head> <meta charset="UTF-8"> <title>栏目修改--后台管理</title> <link rel="stylesheet" type="text/css" href="../../public/style/css/common.css"/> <link rel="stylesheet" type="text/css" href="../../public/style/css/main.css"/> <script type="text/javascript" src="../../public/style/js/libs/modernizr.min.js"></script> <script type="text/javascript" charset="utf-8" src="../../public/ueditor/ueditor.config.js"></script> <script type="text/javascript" charset="utf-8" src="../../public/ueditor/ueditor.all.min.js"></script> <script type="text/javascript" charset="utf-8" src="../../public/ueditor/lang/zh-cn/zh-cn.js"></script> </head> <body> <?php include_once("../../common/top.php"); ?> <div class="container clearfix"> <?php include("../../common/left.php"); ?>  <div class="main-wrap"> <div class="crumb-wrap"> <div class="crumb-list"><i class="icon-font"></i><a href="../index.php">首页</a><span class="crumb-step">></span><a class="crumb-name" href="cate_list.php">栏目管理</a><span class="crumb-step">></span><span>新增作品</span></div> </div> <div class="result-wrap"> <div class="result-content"> <form action="cate_upd.php" method="post" id="myform" name="myform" enctype="multipart/form-data"> <input type="hidden" name="id" value="<?php echo $id;?>"> <table class="insert-tab" width="100%"> <tbody>       <?php ///* foreach($rs as $k=>$v){ // */?> <?php ///*if($v['id']==$id) { // echo "selected"; // }*/?><?php ///*echo $v['id']*/?><?php ///*echo $v['name']; */?> <?php ///* } // */?>     <tr> <th><i class="require-red">*</i>栏目标题：</th> <td> <input class="common-text required" id="title" name="name" size="50" value="<?php echo $row['name'];?>" type="text"> </td> </tr> <tr> <th><i class="require-red">*</i>栏目类型：</th> <td> <select name="modelid" class="form-control"> <option <?php if($row['modelid']==1){ echo "selected"; } ?> value='1'>文章模型</option>; <option <?php if($row['modelid']==2){ echo "selected"; } ?> value='2'>单页模型</option>; <option <?php if($row['modelid']==3){ echo "selected"; } ?> value='3'>产品模型</option>; <option <?php if($row['modelid']==4){ echo "selected"; } ?> value='4'>图片模型</option>; ?> </select> </td> </tr> <tr> <th><i class="require-red">*</i>栏目状态：</th> <td> <input type='radio' <?php if($row['status']==1){ echo "checked"; } ?> name='status' value='1'/>显示&nbsp&nbsp <input type='radio' <?php if($row['status']==0){ echo "checked"; } ?> name='status' value='0'/>隐藏 </td> <tr> <th>关键词：</th> <td> <input class="common-text required" id="title" name="keywords" size="50" value="<?php echo $row['keywords'];?>" type="text"> </td> </tr> <tr> <th>内容：</th> <td><textarea name="content" class="common-textarea" id="content" cols="30" style="width: 98%;" rows="10"><?php echo $row['content'] ?></textarea></td> </tr> <tr> <th></th> <td> <input class="btn btn-primary btn6 mr10" value="提交" type="submit"> <input class="btn btn6" onclick="history.go(-1)" value="返回" type="button"> </td> </tr> </tbody></table> </form> </div> </div> </div>  </div> </body> </html> <script type="text/javascript"> UE.getEditor('content',{initialFrameWidth:1100,initialFrameHeight:400,}); </script>

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Modification and deletion of columns

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