SortableJS - Disable sort on a specific element

Question

I'm having difficulty disabling sorting on a specific li in my ul. I'm using SortableJS.

<ul id="items">
    <li class="static">
        <div class="image"><img src="image.jpg" /></div>
        <div class="text">Static</div>
        <div class="clearboth"></div>
    </li>
    <li>
        <div class="image"><img src="image.jpg" /></div>
        <div class="text">Dynamic</div>
        <div class="clearboth"></div>
    </li>
    <li>
        <div class="image"><img src="image.jpg" /></div>
        <div class="text">Dynamic</div>
        <div class="clearboth"></div>
    </li>
</ul>

One li with class static should NOT be sortable. The others should be sortable.

var el = document.getElementById('items');

var sortable = new Sortable(el, {
    onUpdate: function (evt) {
        var itemEl = evt.item;

        // here happens some stuff
    },
    filter: '.js-remove',
    onFilter: function (evt) {
        // here happens some stuff
    }
});

I know you can do it in jQuery UI sortable like this:

$( ".sortable" ).sortable({
    cancel: ".static"
});

How can I do this in SortableJS?

Answer 1

As Bob Stein mentionend in the comments:

You need to add both:

• the filter: 'selector' property
• the onMove: function (e) { return e.related.className.indexOf('static') === -1; } callback listener function

to completely prevent an element from being rearranged at the beginning or end of a list.

Working with multiple sortable instances:
If you have multiple lists, from which you can exchange elements, you would add the same code to the sortable instances. This is because a dragged element from another sortable instance does not call the callback functions of the sortable instance to be added, but those of its source sortable instance. See this example below:

var el = document.getElementById('items');
var sortable = Sortable.create(el, {
   filter: ".static",
   group: {
     name: 'list'
   },
   onMove(e) {
     return e.related.className.indexOf('static') === -1;          
   }
});
var items2 = document.getElementById('items2');
var sortable = Sortable.create(items2, {
   filter: ".static",
   group: {
     name: 'list'
   },
   onMove(e) {
     return e.related.className.indexOf('static') === -1;          
   }
});

<script src="//cdnjs.cloudflare.com/ajax/libs/Sortable/1.14.0/Sortable.min.js"></script>
<link href="http://rubaxa.github.io/Sortable/st/app.css" rel="stylesheet" />
<ul id="items" class="block__list block__list_words">
    <li class="static">FRUITS</li>
    <li>Strawberry</li>
    <li>Banana</li>
    <li>Peach</li>
</ul><ul id="items2" class="block__list block__list_words">
    <li class="static">COMPANIES</li>
    <li>Microsoft</li>
    <li>Apple</li>
    <li>Intel</li>
</ul>