On Fri, May 11, 2012 at 4:20 PM, Jean-Vincent Drean <[email protected]> wrote:
> On Fri, May 11, 2012 at 3:08 PM, Marius Dumitru Florea
> <[email protected]> wrote:
>> On Fri, May 11, 2012 at 3:52 PM, Jean-Vincent Drean <[email protected]> wrote:
>>> On Fri, May 11, 2012 at 2:31 PM, Marius Dumitru Florea
>>> <[email protected]> wrote:
>>>> I opened http://jira.xwiki.org/browse/XWIKI-7815 .
>>>>
>>>> On Fri, May 11, 2012 at 11:47 AM, Vincent Massol <[email protected]> 
>>>> wrote:
>>>>>
>>>>> On May 11, 2012, at 10:35 AM, Thomas Mortagne wrote:
>>>>>
>>>>>> On Fri, May 11, 2012 at 10:25 AM, Marius Dumitru Florea
>>>>>> <[email protected]> wrote:
>>>>>>> Hi devs,
>>>>>>>
>>>>>>> While debugging the failing REST integration tests I discovered an
>>>>>>> inconsistency in the page REST resource. Take for instance the
>>>>>>> response returned for this URL:
>>>>>>>
>>>>>>> /xwiki/rest/wikis/xwiki/spaces/Blog/pages/BlogIntroduction
>>>>>>>
>>>>>>> * The returned content is the raw (not rendered) content. In this
>>>>>>> particular case, since the blog post content is saved in the blog post
>>>>>>> object, and also because the blog uses the new sheet system, the raw
>>>>>>> content of Blog.BlogIntroduction page is empty
>>>>>>>
>>>>>>> * The returned title is the display title (i.e. the rendered title).
>>>>>>> In this particular case, since the raw title is empty, but the blog
>>>>>>> post sheet, which controls how the title is displayed, renders the
>>>>>>> 'title' property of the blog post.
>>>>>>>
>>>>>>> The inconsistency is that the content is raw while the title is
>>>>>>> rendered. I think the page REST resource should provide data in the
>>>>>>> first place, so raw title. It could provide the rendered title or
>>>>>>> content additionally, but that is secondary IMO.
>>>>>>>
>>>>>>> WDYT?
>>>>>>
>>>>>> I agree. The default behavior of REST should be to return data.
>>>>>> Especially since thee is nothing here to indicate in which syntax to
>>>>>> output the title.
>>>>>
>>>>
>>>>> I agree too. We need to decide how to handle this change though since 
>>>>> it's going to break backward compat.
>>>>
>>>> I think the "title" page REST resource property should provide the raw
>>>> document title on the long run, and the rendered title could be
>>>> obtained through http://jira.xwiki.org/browse/XWIKI-5820 . So I don't
>>>> see other solution besides:
>>>
>>
>>> But this means that in order to get technical info about a page
>>> (parent, children, etc) and the rendered title you'll need to make 2
>>> requests right ?
>>
>> No. If you need only the rendered version of a page you request
>> directly the rendered version, which includes all the document meta
>> data (parent, child, etc.). The only difference is that fields like
>> title and content which are "renderable" are rendered. At least that's
>> what I understood from http://jira.xwiki.org/browse/XWIKI-5820 . Now,
>> if you need both raw and rendered data you have to make indeed 2
>> requests.
>>
>>> Is the raw title really useful outside of an editor ?
>>
>> As I said before, I believe the data is more important than the
>> presentation of the data and REST should focus on the data first, i.e.
>> it should expose XWiki data. Right now you can't access the raw
>> document title through REST and this is a serious limitation.
>>
>
> We render the title field in order to display data (from an object
> field for example) or in order to get a translation.
> I see what you mean but we're only talking about velocity evaluation
> here, which is not exactly "presentation".

Hmm, indeed, evaluating the Velocity code from the document title
outside of the XWiki context is tricky.

More info:

* we didn't provide the rendered title from the start. Here's the
commit that introduced it
https://github.com/xwiki/xwiki-platform/commit/2f47139e21bc0ea1d7210d6bc9cf4f5fcfa58843#L1L229
* there are resources that return the raw title. I found
/xwiki/rest/wikis/xwiki/pages so there's clearly an inconsistency.

Thanks,
Marius

>
>>
>> I don't know if there are more use cases for the rendered title versus
>> raw title, but I know that you can get the rendered title from the raw
>> title, but not the other way around. Someone might want to use his own
>> renderer for the title (although that's a bit far fetched :) ).
>>
>
> You can get the rendered title from the raw title only of you're using
> the API from XWiki itself (and on the server side).
>
> --
> Jean-Vincent Drean,
> XWiki.
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