rails/actionview/CHANGELOG.md

• Deprecate render locals to be assigned to instance variables.

  Petrik de Heus

• Remove legacy default media=screen from stylesheet_link_tag.

  André Luis Leal Cardoso Junior

• Change ActionView::Helpers::FormBuilder#button to transform formmethod attributes into _method="$VERB" Form Data to enable varied same-form actions:

  <%= form_with model: post, method: :put do %>
    <%= form.button "Update" %>
    <%= form.button "Delete", formmethod: :delete %>
  <% end %>
  <%# => <form action="posts/1">
      =>   <input type="hidden" name="_method" value="put">
      =>   <button type="submit">Update</button>
      =>   <button type="submit" formmethod="post" name="_method" value="delete">Delete</button>
      => </form>
  %>
  

  Sean Doyle

• Change ActionView::Helpers::UrlHelper#button_to to always render a <button> element, regardless of whether or not the content is passed as the first argument or as a block.

  <%= button_to "Delete", post_path(@post), method: :delete %>
  <%# => <form action="/posts/1"><input type="hidden" name="_method" value="delete"><button type="submit">Delete</button></form>
  
  <%= button_to post_path(@post), method: :delete do %>
    Delete
  <% end %>
  <%# => <form action="/posts/1"><input type="hidden" name="_method" value="delete"><button type="submit">Delete</button></form>
  

  Sean Doyle, Dusan Orlovic

• Add config.action_view.preload_links_header to allow disabling of the Link header being added by default when using stylesheet_link_tag and javascript_include_tag.

  Andrew White

• The translate helper now resolves default values when a nil key is specified, instead of always returning nil.

  Jonathan Hefner

• Add config.action_view.image_loading to configure the default value of the image_tag :loading option.

  By setting config.action_view.image_loading = "lazy", an application can opt in to lazy loading images sitewide, without changing view code.

  Jonathan Hefner

• 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 for previous changes.