Question

Is it possible exec ruby code that is in a instance variable in a controller?

Example:

def something
@code = "redirect_to 'https://www.google.com/'"
exec(@code) // And then it would redirect.
end

Answer 1

DON’T DO THIS. Rails IS Ruby. In Ruby, you can execute any command inside a string using the eval method. And when you start really getting into it, there is class_eval.

@myvar = "puts 'SHOULD NOT HAVE DONE THIS!!'"

eval(@myvar)  # SHOULD NOT HAVE DONE THIS!!

Keep safe.