How to set selected option in select?

[janpeterka]

I'm probably missing something quite obvious, but I'm unable to set selected option in my form.
I tried doing it like this:
Field(:chapter_style_name).select(*model.used_styles.to_a, selected: default_chapter_style_name), and also tried value and default, and nothing does the trick.

Thanks for your help!

[janpeterka]

Looking into code, I found this:

# rails/components/select.rb

def options(*collection)
  map_options(collection).each do |key, value|
    option(selected: field.value == key, value: key) { value }
  end
end

From that I guess only way is to set the attribute value on given model.
That lead me to adding Decorator object for form (as these attributes are not on the original model).
I guess it's recommended to have matching objects for all forms.