Start_form_tag how to use the options parameter?

Rails
1

Hello, I don’t understand how to use the options parameter of
start_form_tag
I want to have the class and id attributes of the form initialized to
“Foo”…

I suppose it’s something like
start_form_tag( :options[‘class’] => ‘Foo’, :options[‘id’] => ‘Foo’)

But I can’t figure out the right syntax…

Thank you in advance…

2

Got it :
<%= start_form_tag( {}, {:class => ‘Foo’}) %>

But why do I need to provide an empty {} (empty list ? empty collectin ?
empty array ? what is this ?) ?

I tought that the order of the parameters was not important as long as
there have a name ?

So
<%= start_form_tag( options = {:class => ‘Foo’}) %>

does not work - why ??