[WICKET-6606] data-wicket-placeholder is invalid XHTML

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 8.1.0
• Fix Version/s: 8.2.0, 9.0.0-M1
• Component/s: wicket-core
• Assignee: Sven Meier
• Reporter: Gert-Jan Schouten
• Created: 30/Oct/18 14:27
• Updated: 30/Oct/18 21:31
• Resolved: 30/Oct/18 21:31

Description

Because of WICKET-6575, Wicket now sometimes adds a data-wicket-placeholder attribute. However, when you serve your pages with MIME-type application/xhtml+xml, the browser expects valid XML. The data-wicket-placeholder attribute results in a browser parse error, because it does not have a value. This makes 8.1.0 currently unusable to us, since we serve pure XHTML. I suggest giving the attribute an empty value: data-wicket-placeholder="" or a dummy value: data-wicket-placeholder="true".