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<column *ngFor="let col of columns">
...
<div [dragula]="'tickets-list'" [dragulaModel]="col.tickets">
<ul>
<li *ngFor="let ticket of col.tickets">
{{ ticket }}
</li>
</ul>
</div>
</column>
我有几栏。每列包含带票证的数组。如何检测哪个票已移动并在哪里?Angular 2 - ng2-dragula