*   `ActionView::Helpers::FormBuilder#id` returns the value
    of the `<form>` element's `id` attribute. With a `method` argument, returns
    the `id` attribute for a form field with that name.

        <%= form_for @post do |f| %>
          <%# ... %>

          <% content_for :sticky_footer do %>
            <%= form.button(form: f.id) %>
          <% end %>
        <% end %>

    *Sean Doyle*

*   `ActionView::Helpers::FormBuilder#field_id` returns the value generated by
    the FormBuilder for the given attribute name.

        <%= form_for @post do |f| %>
          <%= f.label :title %>
          <%= f.text_field :title, aria: { describedby: f.field_id(:title, :error) } %>
          <%= tag.span("is blank", id: f.field_id(:title, :error) %>
        <% end %>

    *Sean Doyle*

*   Add `tag.attributes` to transform a Hash into HTML Attributes, ready to be
    interpolated into ERB.

        <input <%= tag.attributes(type: :text, aria: { label: "Search" }) %> >
        # => <input type="text" aria-label="Search">

    *Sean Doyle*


Please check [6-1-stable](https://github.com/rails/rails/blob/6-1-stable/actionview/CHANGELOG.md) for previous changes.