Collections can take advantage of `multi_read` if they render one template
and their partials begin with a cache call.
The cache call must correspond to either what the collections elements are
rendered as, or match the inferred name of the partial.
So with a notifications/_notification.html.erb template like:
```ruby
<% cache notification %>
<%# ... %>
<% end %>
```
A collection would be able to use `multi_read` if rendered like:
```ruby
<%= render @notifications %>
<%= render partial: 'notifications/notification', collection: @notifications, as: :notification %>
```
The testing of error messages have been implemented wrongly a few times.
This is an attempt to fix it.
For example, some of these test should have failed with the new code.
The reason they are not failling with the new string is the fact they
were not being tested beforehand.
Makes caching a collection of template partials faster using `read_multi`
on the Rails cache store.
Some caching implementations have optimized `read_multi` so we don't have
to check in the cache store for every template.
The 'selected' option is not doing what it should do.
The expected behavior is to pass the value selected by default for the options_from_collection_for_select method
Per DHH in #18337, ActionView::Helpers::RecordTagHelper has been
extracted to an external gem (source currently lives at
todd/record_tag_helper). Removal notices have also been added for anyone
upgrading that use the extracted methods.
Refactoring at #18647 broke using non active record objects in form_for. This patch
restores the original behaviour where we only compute i18 key when object.respond_to?(:to_model)
The `link_to` helper generates an HTML anchor element (consisting of opening and closing anchor tags and an element body). The docs currently state the a link tag is generated (which would indicate a tag like `<link>`, which is another valid HTML tag), so this change clarifies that an anchor element is actually generated.
[ci skip]
This eliminates the warning below:
actionview/test/template/form_helper_test.rb:913: warning: method redefined; discarding old id_came_from_user?
actionview/test/template/form_helper_test.rb:104: warning: previous definition of id_came_from_user? was here