Forced filter or conditionnal sort ?

[BenjaminOwlient]

Hello,

I have a model whose certain column sorting would be useful, but as these columns are not indexed I don't want the user to use this sorting unless a filtering (which is on a indexed column itself) has been applied.
So I wonder if they are ways to :

• Not display any data unless a specific filter has been used ?
  Or
• Make the sort option conditionnal (for example with a closure passing current query builder) ?

Or any suggestion to solve my problem.

Thank you.