RegexColumnsReloaded (easily add regex columns or any kind of column)

Buttons/Scripts
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6

As it is, this script can only access the first level of attributes for the item class. For example, the user can't use "metadata.doc.author" as target.

I found a solution to that on this question of StackOverflow.

Step-by-step

1 - Add this function that parses the target string and returns the correct last level object:

function findprop(obj, path) {
    var args = path.split('.'), i, l;
    for (i = 0, l = args.length; i < l; i++) {
        if (!obj[args[i]]) {
            return;
        }
        obj = obj[args[i]];
    }
    return obj;
}

2 - Replace:

This line
fileSubject = ColumnData.item[columns[colName].target];
For this
fileSubject = findprop(ColumnData.item, columns[colName].target);