Posted about 9 years ago. Visible to the public.
Rails: Disable options of a select field
Simply give the
select helper an option
:disabled, passing either a single value or an array. You need to specify the option's
value, not its text.
= form.select :country, Address.countries_for_select, :include_blank => true, :disabled => ['disabled-value1', 'disabled-value-2']
Also see Cucumber: Check if a select field contains a disabled option on how to test this.