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

The strong_params function is just about giving your controller a "whitelist" of variables to work with. It's really for security purposes, and literally just means that your app can access params[:permitted_param] to save the data.

---

There are 2 things you could do:

--> Edit the params[:category] variable before you call the post_params function:

def create
    params[:category].downcase
    @post = Post.new(post_params)
    @post.save
end

--> You could use the before_create function as recommended by @thiyaram too :)