通过jquery click事件在php中设置会话变量 [英] Setting session variable in php through jquery click event

问题描述

因此，到目前为止，我一直在研究Stackoverflow上的所有可能答案.但是，无论我如何尝试，我都无法正常工作.

So I have been looking at all possible answers so far on Stackoverflow. But no matter how I try, I can't get this to work.

我正在尝试根据点击的链接设置一个会话变量.

I'm trying to set a sessionvariable according to a clicked linked.

这可以是网格"或列表"

this can be 'grid' or 'list'

我可以更改类以及相应div的视图.但是，我对php的$ .post调用未传递该变量(我假设这样做，因为什么也没有发生)，或者我的php调用是错误的.

I can change the class, and the view of the corresponding div. However, my $.post call to php is not passing the variable ( im assuming this, since nothing happens ) or my php call is wrong.

这是我的代码:

HTML

<li class="display-control-list-item" > <a href="javascript: void(0)" class="js-set-display list" id="list" > Listview </a> </li>
<li class="display-control-list-item" > <a href="javascript: void(0)" class="js-set-display grid" id="grid" > Gridview </a> </li>

JQUERY

 function set_display_type( type ) {
   if ( type == 'grid' ) {
     $( '.js-set-display.list' ).removeClass( 'active' );
     $( '.js-set-display.grid' ).addClass( 'active' );
     $( '.content-inner' ).attr({ 'class' : 'container content-inner gridview' });
     var view = 'gridview';
     $.post( 'library/fx.behaviour.php' , { setdisplay: view });
   }
   if ( type == 'list' ) {
     $( '.js-set-display.grid' ).removeClass( 'active' );
     $( '.js-set-display.list' ).addClass( 'active' );
     $( '.content-inner' ).attr({ 'class' : 'container content-inner listview' });
     var view = 'listview';
     $.post( 'library/fx.behaviour.php' , { setdisplay: view });
   }
 }

和我在fx.behaviour.php中的PHP

and my PHP in fx.behaviour.php

$_SESSION[ 'display' ] = 'listview'; // set default
if ( $_POST[ 'setdisplay' ] != '' ) {
  $view = $_POST[ 'setdisplay' ];
  $_SESSION[ 'display' ] = $view;
}

简而言之:单击URL并将值通过jquery传递给php后，sessionvariables将不会更新.

In short: the sessionvariable won't update after clicking the url and passing the value through jquery to php.

推荐答案

这就是我要做的(为了快速起见，切掉了一些代码):

Here's what I would do (cut some code out for quickness):

HTML(如果使用jQuery，则不需要javascript无效代码):

HTML (you don't require javascript void code if using jQuery):

<ul id="set-display">
    <li><a href="" id="list">Listview</a></li>
    <li><a href="" id="grid">Gridview</a></li>
</ul>

jQuery:

$('#set-display a').click(function(e) {
    var type = $(this).attr('id');
    var view = (type === 'grid') ? 'gridview' : 'listview';
    $.post('library/fx.behaviour.php', { display: view });

    // you can use the view or type variable to trigger your other code
});

PHP:

session_start(); // if not called already

// if POST display not empty and is expected string then use it, otherwise default to 'listview'
$_SESSION['display'] = ( ! empty($_POST['display']) && in_array($_POST['display'], array('listview', 'gridview'))) ? $_POST['display'] : 'listview';

我使用$_POST['display']而不是setdisplay来保持一致性.检查您的jQuery调用是否获得有效的200响应也可能是值得的.在Chrome中，您可以通过以下步骤进行操作:转到检查器，选择网络"标签，点击按钮，然后查看请求.

I used $_POST['display'] rather than setdisplay for naming consistency. It might also be worth checking your jQuery call gets a valid 200 response. In Chrome you can do this by going to the Inspector, selecting the network tab, click the button, and watch for the request.

这篇关于通过jquery click事件在php中设置会话变量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！