Question

I have a variable that I obtain through my controller. I want to check and see if there’s a record with that variable’s value in the DB. If there is, then delete that record. In my User model there’s a ‘number’ attribute that’s a string. Here’s what the pseudo code in my controller would look like:

from_number = params["From"]

if @user.number == from_number
   # find a record in the DB with that value and delete it
   User.find(from_number)
   @user.destroy
else
   puts "don't delete DB record"
end

Can I do this in the controller or should this be done in the model? If it should be done in the model, how do I pass from_number to the model to process?

Thanks!

Answer 1

Use the code given below, it will delete existing user in the db and call all callbacks on this instance

User.where(number: params["From"]).first.try(:destroy)

So no need to write “if else”. And this code should be placed in controller only.