DataTables

Viper

My code for column preprocessing

'aoColumnDefs': [
	{
		'bSearchable': false,
		'bVisible': true,
		'bSortable': false,
		'bUseRendered': false,
		'fnRender': function(o, val){
			return o.aData[o.oSettings.aoColumns[o.iDataColumn].mDataProp];
		},
		'aTargets': [0]
	},
	{
		'bSearchable': true,
		'bVisible': true,
		'bSortable': true,
		'bUseRendered': false,
		'fnRender': function(o){
			if (o.mDataProp == 'parent_event_id') {
				//o.oSettings.aoColumns[o.iDataColumn].bVisible = false;
				console.log(1);
			} else {
				console.log(0);
			}

			return o.aData[o.oSettings.aoColumns[o.iDataColumn].mDataProp];
		},
		'aTargets': [1]
	}
]

If I do console.log(o.oSettings.aoColumns[o.iDataColumn].bVisible); for colums 1 I see that is true. But when I trying to set it in 'if' statement I get an error

a.aoColumns[o] is undefined

Why I can't set it to false in fnRender callback?

Viper

Hmm... If I move o.oSettings.aoColumns[o.iDataColumn].bVisible = false; to fnDrawCallback dataTables won't hide this column.

...
'fnDrawCallback': function(oSettings){
	oSettings.aoColumns[1].bVisible = false;
}

My table have a seven columns, but I can't hide any columns in fnDrawCallback. Looks like a bug?! Or not?

Viper

I found that problem is in the next line in dataTables.js

nThs[i].style.width = o.aoColumns[iVis].sWidth;

o.aoColumns[iVis] is undefined.

allan

oSettings.aoColumns[1].bVisible = false

This is not the way to change the column visibility since there is no 'set' hook in Javascript (at least, not that is widely supported yet!). If you want to change the column visibility you need to use fnSetCoumnVis , otherwise DataTables has no way of enacting the change.

Allan

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