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When submitting a `<form>`, browsers will serialize the element that initiated the submission as part of the [FormData][], including its `name` and `value` attributes. Browser support for `<form>` submission HTTP verbs is limited to `GET` and `POST`. Rails currently works around this [limitation by constructing `<input type="hidden" name="_method" value="VERB">` which serializes `_method="VERB"` to the FormData][_method]. To support varied HTTP actions within the same form, this commit intervenes when a `form.button formmethod: "..."` call is made during form construction, and translates any `formmethod:` value to the corresponding work-around version. [FormData]: https://developer.mozilla.org/en-US/docs/Web/API/FormData [_method]: https://edgeguides.rubyonrails.org/form_helpers.html#how-do-forms-with-patch-put-or-delete-methods-work-questionmark [button-formmethod]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/button#attr-formmethod
84 lines
3.1 KiB
Markdown
84 lines
3.1 KiB
Markdown
* Change `ActionView::Helpers::FormBuilder#button` to transform `formmethod`
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attributes into `_method="$VERB"` Form Data to enable varied same-form actions:
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<%= form_with model: post, method: :put do %>
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<%= form.button "Update" %>
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<%= form.button "Delete", formmethod: :delete %>
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<% end %>
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<%# => <form action="posts/1">
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=> <input type="hidden" name="_method" value="put">
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=> <button type="submit">Update</button>
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=> <button type="submit" formmethod="post" name="_method" value="delete">Delete</button>
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=> </form>
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%>
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*Sean Doyle*
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* Change `ActionView::Helpers::UrlHelper#button_to` to *always* render a
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`<button>` element, regardless of whether or not the content is passed as
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the first argument or as a block.
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<%= button_to "Delete", post_path(@post), method: :delete %>
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<%# => <form action="/posts/1"><input type="hidden" name="_method" value="delete"><button type="submit">Delete</button></form>
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<%= button_to post_path(@post), method: :delete do %>
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Delete
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<% end %>
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<%# => <form action="/posts/1"><input type="hidden" name="_method" value="delete"><button type="submit">Delete</button></form>
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*Sean Doyle*, *Dusan Orlovic*
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* Add `config.action_view.preload_links_header` to allow disabling of
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the `Link` header being added by default when using `stylesheet_link_tag`
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and `javascript_include_tag`.
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*Andrew White*
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* The `translate` helper now resolves `default` values when a `nil` key is
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specified, instead of always returning `nil`.
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*Jonathan Hefner*
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* Add `config.action_view.image_loading` to configure the default value of
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the `image_tag` `:loading` option.
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By setting `config.action_view.image_loading = "lazy"`, an application can opt in to
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lazy loading images sitewide, without changing view code.
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*Jonathan Hefner*
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* `ActionView::Helpers::FormBuilder#id` returns the value
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of the `<form>` element's `id` attribute. With a `method` argument, returns
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the `id` attribute for a form field with that name.
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<%= form_for @post do |f| %>
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<%# ... %>
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<% content_for :sticky_footer do %>
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<%= form.button(form: f.id) %>
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<% end %>
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<% end %>
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*Sean Doyle*
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* `ActionView::Helpers::FormBuilder#field_id` returns the value generated by
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the FormBuilder for the given attribute name.
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<%= form_for @post do |f| %>
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<%= f.label :title %>
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<%= f.text_field :title, aria: { describedby: f.field_id(:title, :error) } %>
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<%= tag.span("is blank", id: f.field_id(:title, :error) %>
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<% end %>
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*Sean Doyle*
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* Add `tag.attributes` to transform a Hash into HTML Attributes, ready to be
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interpolated into ERB.
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<input <%= tag.attributes(type: :text, aria: { label: "Search" }) %> >
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# => <input type="text" aria-label="Search">
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*Sean Doyle*
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Please check [6-1-stable](https://github.com/rails/rails/blob/6-1-stable/actionview/CHANGELOG.md) for previous changes.
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