Re: [xwiki-users] Can not filter livetable on doc.title

On 02/06/2012 10:59 AM, Joris Dirks wrote: There are two different things that usually act as "title", doc.title and doc.displayTitle. The first one is an actual metadata field of the document, persisted to the database, while the latter is a dynamic field computed from different sources, including the doc.title field, headers in the content, the document name, and, more recently, other fields selected by the sheet used to display the objects in the document (a new feature of the new sheet mechanism). Plus, it could even be more dynamic, as in text generated by some Velocity code, in the most basic form a translation. Livetable filters work directly on the database, meaning that they translate into sql conditions ("and doc.title like '%text introduced by the user%'"). The doc.title column is special, since it's not exactly the doc.title metadata, but a combination of doc.title and doc.displayTitle, so even though the computed display title is displayed, filtering and sorting works on the plain title. Given the very dynamic and unpredictable aspect of the display title, it's impossible to write a correct sql filter that would match the display title in all cases. For this reason, by default the title isn't filterable, since it won't meet the user's expectations: it doesn't filter on the *displayed* title, but on the internal title. What's more, it *can't* be configured so that it filters on the right information all the time. For certain instances it would be possible to actually make the field filterable, but only when your documents really use the document title as the only source of the displayed title. For example, if you edit some of the displayed documents in wiki or wysiwyg mode and enter something in the document title field (the one above the content), you will be able to filter it in the livetable. I wouldn't report this as a bug, since it's a limitation that can't easily be fixed, but what we could do is make more use of the document title. So far we've been limited by the old sheet mechanism when developing applications, so most applications define their own object property for the title instead of using the document title, and even worse, their own property for the main content, since the document content had to be reserved for the sheet inclusion statement. -- Sergiu Dumitriu http://purl.org/net/sergiu/