Dynamic OR filtering - Slick

Question

Ok, I\'ve got a method with multiple optional arguments like this

def(username: Option[String], petname: Option[String], favouritefood: Option[String])
         


        

Answer 1

The thoefer is nice for simple use cases but has some limits. Like if all your options are None's the list is empty and you can't reduce an empty list :)

If you need something more composable, based on predicate, conjunctions and disjunctions (a bit like Hibernate/JPA Criteria API), you can check my answer in Slick: create query conjunctions/disjunctions dynamically