In _sanitizeValue we can receive field as a string of the form fieldName:grouping, if we search for this directly in the fields of the model we won't find anything. Hence we should use the fieldName part of it.
In _sanitizeValue we can receive field as a string of the form fieldName:grouping, if we search for this directly in the fields of the model we won't find anything. Hence we should use the fieldName part of it.