[wp-hackers] filtering posts

[Nathan Olsen]

I just ran this as a test and it worked. Anyone see
any problems with doing something like this? I'm
hesitant to use $wp_query but this seems to do exactly
what I need.

select_posts($wp_query->posts);

function select_posts($all_posts) {
$all_posts[0] = NULL;
foreach ($all_posts as $key => $value) {
if ($value == NULL) unset($all_posts[$key]);
}
array_values($all_posts);
return $all_posts;
}

--- Nathan Olsen <nateomedia at yahoo.com> wrote:

> add_filter seems to get processed before anything
> gets
> called on a template. So, if my plugin is called on
> the template, nothing that I do within my plugin
> will
> effect the add_filter function that I set up. I
> tried
> setting up a global variable and was losing my mind
> trying to understand why it wasn't working. I echo'd
> the variable and the modified $where statement that
> was supposed to be happening through add_filter and
> could not understand why my variable was showing up
> on
> it's own but not in the function I had set-up
> through
> add_filter... until I realized that the add_filter
> had
> happened a long time ago. :)
> 
> add_filter cannot, it seems, be called from within a
> function either. So, I can't have my plugin get
> called
> and then have add_filter run then. That would work
> fine! But it's not possible. :(
> 
> What needs to happen:
> 
> page loads -> plugin called? -> yes -> grab IDs of
> posts to display, eliminate all others -> run loop
> 
> page loads -> plugin called? -> no -> run loop
> 
> Your suggestion of setting up a debugger is a good
> one. I've been working on this plugin for a year and
> I'm embarrassed to admit I've never used one. :)
> That
> sounds helpful. Thanks.
> 
> --- Chris Williams <chris at clwill.com> wrote:
> 
> > Set a global variable in your plug-in so later you
> > can check it and
> > farkle with in the posts_where filter.
> > 
> > Another option that I use is to create your own
> > query_var and pass it as
> > a parameter to the page, but from the info you
> > provide isn't complete
> > enough to understand the exact situation.
> > 
> > This is not nuclear physics, it's all in the code.
> 
> > Just step through it
> > in a debugger and you can see what's happening,
> when
> > filters are called,
> > even how WP itself handles similar situations to
> > your own.
> > 
> > One of the best is to watch what happens when
> > standard archive queries
> > are done (e.g. by date).  This tells you a lot
> about
> > how WP handles this
> > itself.  You can then do thou likewise.
> > 
> > -----Original Message-----
> > From: Nathan Olsen
> > Subject: Re: [wp-hackers] filtering posts
> > 
> > Thanks for the reply, but this isn't quite what I
> > need. Your plugin relies on knowing what data to
> > filter before the page loads. I need to be able to
> > decide what data to filter as the page is loading.
> > That is, the most important test will be: has my
> > plugin been called? If it's been called, alter the
> > data; if it hasn't been called, don't alter the
> > data.
> > _______________________________________________
> > wp-hackers mailing list
> > wp-hackers at lists.automattic.com
> >
>
http://lists.automattic.com/mailman/listinfo/wp-hackers
> > 
> 
> 
> 
>  
>
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