jQuery UI(Sortable):使用内部包含PHP代码的div位置与数据库之间进行保存和加载

时间:2019-05-02 10:16:07

标签: javascript php ajax database jquery-ui

我遇到以下具体问题:

我有一个简单的仪表板,其中包含3列(左,中,右)。 这些列中有3个单独的div。

当用户将div拖放到另一列时,其位置应保存在数据库中(使用AJAX)。

通过将布局(拖放后的HTML)保存到数据库中,我很容易实现了这一目标。

示例:

<!-- left column -->
<div class="left column">

    <!-- Div 1 -->
    <div class="div1 portlet">
        <div class="portlet-header">div1</div>
        <div class="portlet-content">
            <p> This is Div 1 </p>
        </div>
    </div>
</div>
<!--------------------------------------------------------------------->
<!-- middle column -->
<div class="middle column">

    <!-- Div 2 -->
    <div class="div2 portlet">
        <div class="portlet-header">div2</div>
        <div class="portlet-content">
            <p> This is Div 2 </p>
        </div>
    </div>
</div>
<!--------------------------------------------------------------------->
<!-- right column -->
<div class="right column">
    <!-- Div 3 -->
    <div class="div3 portlet">
        <div class="portlet-header">div3</div>
        <div class="portlet-content">
            <p> This is Div 3 </p>
        </div>
    </div>
</div>

如果div中包含静态HTML元素(在我的情况下为P元素),这将非常有用,因为当用户拖放(将HTML保存到数据库)后从页面上的数据库加载数据时,一切正常,因为它只是重新创建HTML元素。

但是如果其中包含一段PHP代码怎么办? 例如这样的东西:

  <!-- right column -->
<div class="right column">
    <!-- Div 3 -->
    <div class="div3 portlet">
        <div class="portlet-header">div3</div>
        <div class="portlet-content">
            <?php echo "This is div3"; ?>
        </div>
    </div>
</div>

当您尝试将其保存到数据库时,将其保存在数据库中,如下所示:

  <!-- right column -->
<div class="right column">
    <!-- Div 3 -->
    <div class="div3 portlet">
        <div class="portlet-header">div3</div>
        <div class="portlet-content">
           This is div3
        </div>
    </div>
</div>

相反,我需要找到一种方法来记住它的PHP代码内容而不是它的输出。

我在网上到处都看过,但是没有一个涵盖我的特定问题。

请参见下面的示例,然后尝试将div拖放到其他列中。 (它可以工作,但显然不能保存职位,因为这是我的主要问题)。

$(function () {

  $(".column").sortable({
    connectWith: ".column",
    handle: ".portlet-header",
    cancel: ".portlet-toggle",
    placeholder: "portlet-placeholder ui-corner-all",

    start: function (event, ui) {},

    receive: function (event, ui) {
    
    let screenLayout = $("body").html();

      // Save to database
       $.ajax({

        type: 'POST',
        url: 'saveLayout.php',

        data: {
          layout:screenLayout
        },

        success: function (data) {
          console.info(data);
        },

        error: function (data) {
          // failed request
          console.error("Saving in database failed");
        }

      }); 
    }
  });

  $(".column").droppable({

    drop: function (e, ui) {
      var dropped = ui.draggable;
      var droppedOn = $(this);

      $(this).append(dropped.clone().removeAttr('style').removeClass("item-container").addClass("item"));
      dropped.remove();
    }
  })

  $(".portlet")
    .addClass("ui-widget ui-widget-content ui-helper-clearfix ui-corner-all")
    .find(".portlet-header")
    .addClass("ui-widget-header ui-corner-all")
    .prepend("<span class='ui-icon ui-icon-minusthick portlet-toggle'></span>");

  /* Open/close boxes */
  $(".portlet-toggle").on("click", function () {
    var icon = $(this);
    icon.toggleClass("ui-icon-minusthick ui-icon-plusthick");
    icon.closest(".portlet").find(".portlet-content").toggle();
  });

});
body {
    min-width: 520px;
  }
  
  .column {
    width: auto;
    min-width: 33.33%;
    max-width: 33.33%;
    padding-bottom: 100px;
    float: left;
    text-align: center;
  }
  .portlet {
    margin: 0 1em 1em 0;
    padding: 0.3em;
    background:#f5f5f5;
  }

  .portlet img{
    width:75%;
  }

  .portlet-header {
    padding: 0.5em 0.3em;
    margin-bottom: 0.5em;
    position: relative;
    font-size: 0.75em;
    cursor:grab;
  }

  .ui-widget-header:hover{
    background:#d6d6d6;
  }


  .portlet-toggle {
    position: absolute;
    top: 50%; 
    margin-top: -8px;
    cursor: pointer;
    right: 5px;
  }
  .portlet-content {
    padding: 0.4em;
  }
  .portlet-placeholder {
    background:rgb(233, 233, 233);
    border: 2px dashed #c5c5c5;
    margin: 0 1em 1em 0;
    height: 50px;
  }

.on,
.off{
    color: #FFF;
    padding: 10px;
    text-decoration: none;
    font-weight:bold;
}

.on{
  background: green;
}

.off{
  background: rgb(240, 56, 0);
}

table {
  border: 1px solid #ccc;
  border-collapse: collapse;
  margin: 0;
  padding: 0;
  width:100%;
  table-layout: fixed;
}

table caption {
  font-size: 1.5em;
  margin: .5em 0 .75em;
}

table tr {
  background-color: #f8f8f8;
  border: 1px solid #ddd;
  padding: .35em;
}

table th,
table td {
  padding: .25em;
  text-align: center;
}

table th {
  font-size: .85em;
  letter-spacing: .1em;
  text-transform: uppercase;
}

@media screen and (max-width: 600px) {
  table {
    border: 0;
  }

  table caption {
    font-size: 1.3em;
  }
  
  table thead {
    border: none;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
  }
  
  table tr {
    border-bottom: 3px solid #ddd;
    display: block;
    margin-bottom: .625em;
  }
  
  table td {
    border-bottom: 1px solid #ddd;
    display: block;
    font-size: .8em;
    text-align: right;

  }
  
  table td::before {
    /*
    aria-label has no advantage, it won't be read inside a table
    content: attr(aria-label);
    */
    content: attr(data-label);
    float: left;
    font-weight: bold;
    text-transform: uppercase;
  }
  
  table td:last-child {
    border-bottom: 0;
  }
}

.left{
  background:rgb(171, 171, 243);
}
.middle{
  background: rgb(241, 159, 159);
}
.right{
  background: rgb(168, 236, 168);
}

.portlet{
  width: 95%;
}

/* @media screen and (max-width: 600px) {
  
  .column {
    width: auto;
    min-width: 95%;
    max-width: 95%;
    padding-bottom: 100px;
    text-align: center;
    float: left;
    position: relative;
    left: 15px;
  }

}
*/
<!doctype html>
<html lang="nl">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Draggable Dashboard</title>
    <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
    <link rel="stylesheet" href="style.css">
    <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
    <script src="script.js"></script>
</head>

<body>
    <h1 style="text-align:center;color:#5d5d5d">Dashboard</h1>
    <br>
    <br>

    <!--------------------------------------------------------------------->
    <!-- left column -->
    <div class="left column">

        <!-- Div 1 -->
        <div class="div1 portlet">
            <div class="portlet-header">div1</div>
            <div class="portlet-content">
                 <p> This is Div 1 </p>
            </div>
        </div>
    </div>
    <!--------------------------------------------------------------------->
    <!-- middle column -->
    <div class="middle column">

        <!-- Div 2 -->
        <div class="div2 portlet">
            <div class="portlet-header">div2</div>
            <div class="portlet-content">
                 <p> This is Div 2 </p>
            </div>
        </div>
    </div>
    <!--------------------------------------------------------------------->
    <!-- right column -->
    <div class="right column">
        <!-- Div 3 -->
        <div class="div3 portlet">
            <div class="portlet-header">div3</div>
            <div class="portlet-content">
                <p> This is Div 3 </p>
            </div>
        </div>
    </div>
    <!--------------------------------------------------------------------->
</body>

</html>

0 个答案:

没有答案