CMS 6: VersionFeed::getSiteRSSLink() should return link from home page.

[sabina-talipova]

Description

VersionFeed::getSiteRSSLink() should return link from home page, not from extension owner page.
See

silverstripe-versionfeed/src/VersionFeed.php

Lines 204 to 212 in 7172dde

	public function getSiteRSSLink()
	{
	// TODO: This link should be from the homepage, not this page.
	if (Config::inst()->get(get_class(), 'allchanges_enabled')
	&& SiteConfig::current_site_config()->AllChangesEnabled
	) {
	return $this->owner->Link('allchanges');
	}
	}

[GuySartorelli]

The change would likely look like this:

- return $this->owner->Link('allchanges');
+ $page = $this->owner;
+ if (!$page->isHomePage()) {
+     $page = SiteTree::get_by_link('/') ?? $page;
+ }
+ return $page->Link('allchanges');

This uses the extended page if it is the homepage, or if there isn't any homepage.

[GuySartorelli]

Marking this as an API change since people will be relying on existing RSS links.