Sortable: Allow for canceling move and or add to work with MV* frameworks like Aurelia

[damianof]

This is related to https://github.com/RubaXa/Sortable/issues/837

I feel people have been doing work around and hacks, but we really need the ability to stop sortable to complete its dom manipulation after drop/move/sort and allow developers to manually change the collection bound to the view in the onSort etc handlers.

[MiguelQueiroz]

i do it on the start event and it works fine for me...

onStart: function (/**Event*/evt) {
if(cancel_condition){
 return false;

     }

[arquadrado]

Return false on the onStart event is supposed to cancel the event...? Because it doesn't... I would love an answer to damianof question.

[MiguelQueiroz]

@arquadrado for me it does. Makes sense, it is done on the onStart to evaluate conditions.

[jebarjonet]

The return false trick in onStart does not work for me neither unfortunately

[RubaXa]

See how it is implemented in any of the packages: https://github.com/SortableJS/
Ex.: https://github.com/SortableJS/angular-legacy-sortablejs/blob/master/angular-legacy-sortable.js#L162-L185