JQGrid - Multiselect

Question

Multiselect in JQGrid only allows either multiple selection or single selections and the shift functionality isn't what I'd expect the shift select to do. I also don't like that we need comboboxes with multiselect.

What other solution could I use for multiselect?

Answer 1

[Oct 2011] Updated to use 4.0 API, corrected shift-selection bugs, simplified selection loop. Tested in 4.2.0.

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If like me, you needed a proper multiselect in the jqgrid - where ctrl selects a single row at a time, select selects multiple rows and neither clear the selection and selects 1 row - You've found it.

First things first: set multiselect: true in the grid definition (I didn't set any other multiselect options)

Next: In gridComplete: function () {} set grid.jqGrid('hideCol', 'cb'); - this hides the checkboxes if you don't want them.

Finally: The main part

beforeSelectRow: function (rowid, e) {
    if (!e.ctrlKey && !e.shiftKey) {
        $("#grid").jqGrid('resetSelection');
    }
    else if (e.shiftKey) {
        var initialRowSelect = $("#grid").jqGrid('getGridParam', 'selrow');
        $("#grid").jqGrid('resetSelection');

        var CurrentSelectIndex = $("#grid").jqGrid('getInd', rowid);
        var InitialSelectIndex = $("#grid").jqGrid('getInd', initialRowSelect);
        var startID = "";
        var endID = "";
        if (CurrentSelectIndex > InitialSelectIndex) {
            startID = initialRowSelect;
            endID = rowid;
        }
        else {
            startID = rowid;
            endID = initialRowSelect;
        }

        var shouldSelectRow = false;
        $.each($("#grid").getDataIDs(), function(_, id){
            if ((shouldSelectRow = id == startID || shouldSelectRow)){
              $("#grid").jqGrid('setSelection', id, false);
            }
            return id != endID;                        
        });
    }
    return true;
}

The End - Hope that helps