Given a radio button like so:
<%= radio_button_tag 'permission[role_id]', '2' %>
How can I make the radio buttons checked status condition. To only be checked if @permission.role_id.nil? or if @permission.role_id == 2?
I tried:
<%= radio_button_tag 'permission[role_id]', '2', @permission.role_id.nil? ? {:checked => true} : {:checked => false} %>
Thanks
The documentation for radio_button_tag says that checked isn't an options hash parameter, it's just a normal one:
radio_button_tag(name, value, checked = false, options = {})
So, you need to do this:
<%= radio_button_tag 'permission[role_id]', '2', !!(@permission.role_id.nil? || @permission.role_id == 2) %>
@permission.role_id == 2 as requested in the original question. Also, why not just use :checked => [email protected]_id.nil? sans ternary? Much more Ruby-esque.
checked isn't passed in the options hash, it's just a standard parameter.If you are using rails 7, the answer given by @skilldrick doesn't work. You have to use a hash instead of a just parameter.
...
form.radio_button :example_field, :example_value, checked:(example_value == "Example Value")
