Min value for input in Simple Form

Question

I want to create a simple money input with SimpleForm.

The money field should have a minimum value of 0, so that a user cannot enter a value less than 0.

However

Answer 1

The answer of @alexander-s is normally right.

However, I had an issue with simple_form.rb being run over by simple_form_bootstrap.rb that they instruct you NOT to change. It lists b.optional :min_max many places.

Instead of the global setting of b.use :min_max mentioned by @alexander-s, I used

<%= f.input :amount, min_max: true %>

This is better as it reuses the min number set in your model.