How to make changes to strong parameters (change to lowercase)

Question

So I am familiarising myself with both rails and of course rails 4.

So this is what I have at the bottom of my controller

def post_params
  params.re         


        

Answer 1

Better You can use before_create callback to update the value.

like,

before_create :check_params

def check_params   
   self.category.downcase!     
end