Restrict the first column filter to the first four chars

m75sa

Hi,
considering this example:
https://datatables.net/examples/api/multi_filter_select.html

I don't know how to restrict the filter string length of the first column only to the first 4 chars...
I saw that the select options menu item is the same for all the column... so i'm wondering if i change the first one the will change also the others...

Any help on this?

kthorngren

On line 5 the API for the particular column is gotten, ie, var column = this;. You can use column().index() to get the column index. Maybe add var colIndex = column.index(); below var column = this;``.

If the index is 0, the first column, you will need to use a different regex expression in this statement:

                        column
                            .search( val ? '^'+val+'$' : '', true, false )

The regex expression you use will be specific to your requirements but it might be as simple as removing the `+'$'.

Next you might want to change the select options value to only be 4 characters if the column index is 0, ie, this code:

                column.data().unique().sort().each( function ( d, j ) {
                    select.append( '<option value="'+d+'">'+d+'</option>' )
                } );

Kevin