Don't allow drop of record grid (gridviewdragdrop)

[fabio.policeno]

Hello
I need to block the line of the grid drop if the value of column1 is 0, for this example: http://docs.sencha.com/ext-js/4-0/#!...d_to_grid.html

I tried like this, but I view returns the error dropZone is not defined(view.dropZone.lock()).

viewConfig: {
           ...
            listeners: {
                ...
                beforedrop: function(node, data, dropRec, dropPosition) {
                    if(data.records[0].get('column1') == 0)
                    {
                        data.view.dropZone.lock();
                    }
                    else
                    {
                        data.view.dropZone.unlock();
                    }
                }
            }
        },

Thank's!

[mitchellsimoens]

If you want to cancel a drop, return false in the beforedrop. before events should all be cancelable by returning false.

[fabio.policeno]

Perfect!!

But now found other problem:

verificarExisteTurma: function(dragZone, item){
        var me = this, 
            registros = item.records;
            
        Ext.each(registros, function(registro){
            var idAnoAcademico = registro.get('IDAnoAcademico'),
                idNivelEnsino = registro.get('IDNivelEnsino');
            
            Ext.Ajax.request({
                url       : URLADMIN + '/turma/existeAnoAcademico/',
                params : {
                    IDAnoAcademico: idAnoAcademico,
                    IDCliente      : me.idRegistro
                },
                success: function(resposta){
                    var r = Ext.decode(resposta.responseText);
                    if(r.existe){
                            
                        return false;
                    }
                }
            });
        })
    }

In resume, if r.existe return true, like stop drop. But i don't have idea how.

Thank's!

[fabio.policeno]

I decided to bring the value of the validation model and it worked. Thank you!