The best way to allow optional parameter for a fragment is to declare them with "th:with" and describe them with meaningful default values.

So, you define explicit your mandatory and your optional values in the declaration tag of your fragment.

Here is simple example, with 1 mandatory and 2 optional parameters:


    Hello
    Mr.
    John Doe


You can then call it like the following:


   Hello Mr. Daniel


   Hi Ms. Lea


(Please note that all values inside the tags are replaced by the dynamic ones. It's just for better reading.)