GridFieldOrderableRows Breaks CMS Breadcrumbs

[jmarshstudios]

When adding GridFieldOrderableRows extension to a DataObject GridField for a has_many child DataObject the breadcrumbs in the north toolbar of the child DO break (back button and parent links) via multiple root names added to the href attribute.

Example: the toolbar__back-button class in the north toolbar href should be /root/admin/pages/edit/EditForm/etc. but becomes /root/root/root/admin/pages/edit/EditForm/etc instead, leading to a broken link that sends the content author to a 404 error.

This is the only add-on used in this case and commenting out the extension resolves the issue.

[michalkleiner]

Looks like you're running the CMS in a subfolder in the document root. Is it also an issue when you run the CMS in the root of the domain?

[jmarshstudios]

No; the issue resolves when placed in webroot as suspected. 👍

Suggestions on how one might resolve this for a webroot/subfolder scenario would be appreciated.

[michalkleiner]

So it's likely related to the recent change around base url within the admin, so likely a valid issue that needs resolving.

[jmarshstudios]

Appreciate that. I'm not very familiar with extending the CMS but for what its worth:

Commenting out line 900 (Breadcrumbs function) in:
SilverStripe\Forms\GridField\GridFieldDetailForm_ItemRequest
also seems to resolve this.

No obvious immediate effect for me elsewhere but this foreach must be there for a reason :)