如何根据条件在js树中添加删除线？

Question

I have created a jsTree to show the folder pathname. My problem is how do I add a strikethrough according to the condition active or inactive in the JSTree? Hope someone can guide me to solve this problem. Below is my code:

<?php 
   $folderData = mysqli_query($mysql_con,"SELECT * FROM filing_code_management");
    $arr_sql5 = db_conn_select($folderData);
    foreach ($arr_sql5 as $rs_sql5) {
    $active = $rs_sql5['status'];
}
   $folders_arr = array();
   while($row = mysqli_fetch_assoc($folderData)){
      $parentid = $row['parentid'];
      if($parentid == '0') $parentid = "#";

      $selected = false;$opened = false;
      if($row['id'] == 2){
         $selected = true;$opened = true;
      }
      $folders_arr[] = array(
         "id" => $row['id'],
         "parent" => $parentid,
         "text" => $row['name'] . ' ' . "<span id='category'>". $row['category']."</span>",
         "category" => $row['category'],
         "state" => array("selected" => $selected,"opened"=>$opened) 
      );
   }

   ?> -->

 <!-- Initialize jsTree -->
   <div id="folder_jstree" title=""></div>
   <!-- Store folder list in JSON format -->
   <textarea style="" id='txt_folderjsondata'><?= json_encode($folders_arr) ?></textarea>


<script style="text/javascript">
  $(document).ready(function() {
    var folder_jsondata = JSON.parse($('#txt_folderjsondata').val());

    $('#folder_jstree').jstree({
      'core': {
        'data': folder_jsondata,
        'multiple': false
      },
      'plugins': ['sort'],
      'sort': function(a, b) {
        return this.get_text(a).localeCompare(this.get_text(b), 'en', {
          numeric: true
        });
      }
    });

    var getColor = function(i) {
      if (i >= 100 && i <= 199) {
        return "blue";
      } else if (i >= 200 && i <= 299) {
        return "red";
      } else if (i >= 300 && i <= 399) {
        return "yellow";
      } else if (i >= 400 && i <= 499) {
        return "purple";
      } else if (i >= 500 && i <= 599) {
        return "green";
      } else {
        return "#000";
      }
    };

    var colorNodes = function(nodelist) {
      var tree = $('#folder_jstree').jstree(true);
      nodelist.forEach(function(n) {
        tree.get_node(n.id).a_attr.style = "color:" + getColor(parseInt(n.text.substr(0, 3), 10));
        tree.redraw_node(n.id); //Redraw tree
        colorNodes(n.children); //Update leaf nodes
      });
    };

    $('#folder_jstree').bind('load_node.jstree', function(e, data) {
      var tree = $('#folder_jstree').jstree(true);
      colorNodes(tree.get_json());
    });

    $('#folder_jstree').bind('hover_node.jstree', function(e, data) {
      $("#" + data.node.id).attr("title", data.node.original.category);
    });

  });


  /*   $(function() {
        $(document).tooltip();
      });  */

</script>

Inside json_encode($folders_arr) the content is:

[{"id":"1","parent":"#","text":"100 PENTADBIRAN <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"2","parent":"#","text":"200 PENGURUSAN TANAH & BANGUNAN <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":true,"opened":true}},{"id":"3","parent":"#","text":"300 PENGURUSAN ASET <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"4","parent":"#","text":"400 PENGURUSAN KEWANGAN <span id='category'>JKP<\/span>","category":"JKP","state":{"selected":false,"opened":false}},{"id":"5","parent":"#","text":"500 PENGURUSAN SUMBER MANUSIA <span id='category'>JKP<\/span>","category":"JKP","state":{"selected":false,"opened":false}},{"id":"6","parent":"1","text":"100-1 PERUNDANGAN <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"7","parent":"1","text":"100-2 PERHUBUNGAN AWAM <span id='category'>JKP<\/span>","category":"JKP","state":{"selected":false,"opened":false}},{"id":"8","parent":"6","text":"100-1-1 PENGGUBALAN-PENYEDIAAN-PINDAAN UNDANG-UNDANG-PERATURAN <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"9","parent":"6","text":"100-1-2 KHIDMAT NASIHAT <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"10","parent":"8","text":"100-1-1-1 UNDANG-UNDANG KECIL KERJA DI JALAN 1996 <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"11","parent":"8","text":"100-1-1-2 UNDANG-UNDANG KECIL PERUNTUKAN MENGENAI LESEN BERSESAMA (MAJLIS PERBANDARAN) <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"12","parent":"8","text":"100-1-1-3 UNDANG-UNDANG KECIL MENGKOMPAUN KESALAHAN-KESALAHAN (MAJLIS PERBANDARAN KLANG), JALAN PARIT DAN <span id='category'>JTM (BERHUBUNG KOD 100-1\/1\/2)<\/span>","category":"JTM (BERHUBUNG KOD 100-1\/1\/2)","state":{"selected":false,"opened":false}},{"id":"13","parent":"9","text":"100-1-2-1 JABATAN PENGUATKUASAAN <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"14","parent":"9","text":"100-1-2-2 JABATAN BANGUNAN <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}},{"id":"15","parent":"7","text":"100-2-1 PUBLISITI, PROMOSI DAN PROTOKOL <span id='category'>JKP<\/span>","category":"JKP","state":{"selected":false,"opened":false}},{"id":"16","parent":"15","text":"100-2-1-1 PUBLISITI DAN KENYATAAN MEDIA <span id='category'>JKP<\/span>","category":"JKP","state":{"selected":false,"opened":false}},{"id":"84","parent":"#","text":"201 HAHA <span id='category'>JTM<\/span>","category":"JTM","state":{"selected":false,"opened":false}}]

I want the condition such that if $active = 0 then it will show the strikethrough in the jsTree. Else if $active = 1 then it will back to normal.

Actually I want the actual output like the below sample picture. For the output below I just used Paint software to edit, easier to let you know what I want as the output:

My working JSFiddle code is here: https://jsfiddle.net/ason5861_cs/9x0dsotz/2/

Hope someone can guide me on how to add strikethrough according to the condition active or inactive into my code?

Note： $row['name'] and $row['category']needed to put strikethrough together if inactive.

Answer 1

With PHP you could have your conditional to set the value of a NULL variable to text-decoration that changes to line-through. This would be done with CSS. Simply have a conditional that checks if the value of $active is set to 0, if it is, then set the value of the null variable to display line-through. If the value of active is anything other than 0, then $strikeThrough will stay NULL and output nothing, therefor no change to text style that is wrapped in span tag.

$strikeThrough = null;
if($active = 0){
$strikeThrough = 'text-decoration: line-through;'
    $output = "<span style='".$strikeThrough."'>" . $rs_wtpname . "</span>";
}
// no change needed for default Active

IN JS, you could use the #folder_jstree nodelist to run through your list and update there. Likely within your colorNodes function you could have a conditional there to check the value of status, then append css to your value if set to 0 (inactive).

If you are unable to get the status from PHP into JS, you could dump the value in the php code using the aforementioned method into an arbitrary data attribute or even alt attribute added to the #folder_jstree element span tag. Then retrieve that using JS and perform your conditional in JS.

EDIT: (April 25th, 2020)

Okay I think I see what you are doing with the JSON and your $folders_array now and how it is saving the data to be parsed in the JSON file.

Try the following code in your php and see if it works.

$folderData = mysqli_query($mysql_con,"SELECT * FROM filing_code_management");
    $arr_sql5 = db_conn_select($folderData);
    foreach ($arr_sql5 as $rs_sql5) {
    $active = $rs_sql5['status']; //--> Here you are setting active state
}
$folders_arr = array();
   while($row = mysqli_fetch_assoc($folderData)){
      $parentid = $row['parentid'];
      if($parentid == '0') $parentid = "#";

      $selected = false;$opened = false;
      if($row['id'] == 2){
         $selected = true;$opened = true;
      }

      //--> this would be the default state of active = 1 set in $output
      $output = $row['name'] . ' ' . "<span id='category'>". $row['category']."</span>";
      //--> Now we see if active is set to 0
      if($active === 0){
          //--> if active is set to 0 change the value of $output to reflect 'text-decoration'
          $output = "<span style='text-decoration: line-through;'>" . $row['name'] . ' ' . "<span id='category'>". $row['category']."</span></span>";
      }
      $folders_arr[] = array(
         "id" => $row['id'],
         "parent" => $parentid,
         "text" => $output, //--> save the proper $output in our array
         "category" => $row['category'],
         "state" => array("selected" => $selected,"opened"=>$opened) 
      );
   }