Re: prev/next-post-link in blog.xsl?

On 12.6.2005 17:47 Uhr, Christian Stocker wrote:
> 
> On 11.6.2005 11:03 Uhr, Alain Petignat wrote:
> 
>>Hi all
>>
>>Is there an easy way to include a link to the previous/next post when
>>viewing a single post?
>>
>>One could then switch sequentially through all your posts.
>>
>>If you do not know what i mean, see here:
>>http://codeconsult.ch/bertrand/archives/000523.html :
>>
>>« Summer of Code | Main | osx has been running on Intel processors for
>>five years... »
>>
>>Something like that :)
> 
> 
> Mmmh, currently not really implemented.
> 
> I think the best approach would be to use some helper php functions and
> call them, where you want them from the xslt. AFAICS you can't do it,
> without at least one more (most certainly even two) more sql queries to
> get the posts before and after the current post, since we don't know
> nothing about the surrounding posts, when we look at a single one.
> 
> Maybe a subplugin would be the best approach. if you need further help,
> just ask, I really don't know the best solution either right now


I added a little subplugin for doing that. bx_plugins_blog_prevnext.

>From the boilerplate:

/*
* a little subplugin for getting next and previous entry
*
* does not take into account, if a blog is published/has-a-category yet
* it's maybe not very performant, since it has to do 2 full tablescans...
*
* Add the following to blog.xsl, if you want to use it:

    <p>
        <xsl:for-each
select="document(concat('portlet://',$collectionUri,'plugin=prevnext(',substring-after(@id,'entry'),').xml'))/bx/plugin/prevnext">
            <a href="{$blogroot}archive/{prev/uri}"><xsl:value-of
select="prev/title"/></a>
            ||
            <a href="{$blogroot}archive/{next/uri}"><xsl:value-of
select="next/title"/></a>
        </xsl:for-each>
    </p>
*/


If anyone has an idea, how to improve the sql code for getting the next
and previous entry, i'm all ears...

See

http://svnweb.bitflux.ch/horde/chora/co.php/bxcmsng/trunk/inc/bx/plugins/blog/prevnext.php?r=HEAD

for the current implementation

chregu


> 
> chregu
> 
> 
>>Thanks for hints
>>Alain.
> 
> 
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