button(value = nil, options = {}, &block)
Instance Public methods
Add the submit button for the given form. When no value is given, it checks
if the object is a new resource or not to create the proper label:
<%= form_for @post do |f| %>
<%= f.button %>
<% end %>
In the example above, if @post is a new record, it will use âCreate Postâ
as button label, otherwise, it uses âUpdate Postâ.
Those labels can be customized using I18n,
under the helpers.submit key (