How do i forbid a character in rails

Question

i would like to forbid "/" from a field.

I read in the doc that it should be something like that:

valid_name_regex = /
validates :name, presence: true, uniqueness: { case_sensitive: true }, format: { with: valid_name_regex }

But i'd like the opposite.

thanks

Answer 1

Try something like

validates :name, presence: true, uniqueness: { case_sensitive: true }, format: { with: /^[^\/]+$/ }