v-sortable_es6.js

import Sortable from 'sortablejs';

export default {
    bind() {
        var self = this;

        Sortable.create(this.el, {
            animation: 150,
            dataIdAttr: 'data-id',

            onUpdate () {
                self.update(this.toArray());
            }
        });
    },

    update (val) {
        return this.vm.$emit('orderChanged', val);
    },

    unbind() {
        Sortable.destroy(this.el);
    }
};