Question

It seems that :class appears to control the class of the parent form, not the button itself.

I want to add the class btn primary to the button.

If I can’t do it directly, can I do it using the form class and SASS? (using @extend or something similar)?

Answer 1

You need to make sure that :class => "btn primary" is the third argument of the button_to call.

If you’re doing this:

<%= button_to "Hello", :action => :new, :class => "btn primary" %>

You are actually saying:

<%= button_to("Hello", { :action => :new, :class => "btn primary" }) %>

So you should change it to:

<%= button_to "Hello", { :action => :new }, :class => "btn primary" %>

I try to avoid using hashes for paths altogether, and use the generated routing methods.

<%= button_to "Hello", new_hello_path, :class => "btn primary" %>