Editing a Member in a Group context uses different validator than direct edit

[sb-relaxt-at]

When one edits a Member by first selecting a Group and then one of its Members, there is the Member_Validator (as defined in the injector) used (see Group#getCMSFields()). None of the possible MemberExtensions that implement updateValidator (see Member#getValidator()) are considered. Therefore the validation when editing a Member is inconsistent.

[dhensby]

@sb-relaxt-at care to PR?

[tractorcow]

Suggestion: Remove the setValidator in the Group::getCMSFields, and add an alias in Member from getValidator() to getCMSValidator(), which would cause the validator to be picked up on a per-record basis in the GridfieldDetailForm.

Alternatively, Update GridFieldDetailForm to check both getCMSValidator() and getValidator() on the record.