[wp-trac] [WordPress Trac] #15063: Add a "context" property to WP_Query as a 2nd param to its constructor

[WordPress Trac]

#15063: Add a "context" property to  WP_Query as a 2nd param to its constructor
--------------------------+-------------------------------------------------
 Reporter:  mikeschinkel  |       Owner:                 
     Type:  enhancement   |      Status:  new            
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Post Types    |     Version:                 
 Severity:  normal        |    Keywords:                 
--------------------------+-------------------------------------------------
 Through WordPress there's often a need to run a special query using
 `WP_Query` but to also modify it using filters like `post_where` and
 `post_join`. Unfortunately it's very hard to get the context right and to
 only run those filters when needed.

 I'd like to propose a new property on WP_Query that adds a context which
 we could optionally set when we create WP_Query objects, i.e.:

 {{{
 $query = new WP_Query('post_type=movie','my-movie-list');
 }}}

 Then in a filter could do something like this:

 {{{
 function posts_where($where,$query) {
         if (isset($query->context='my-movie-list')) {
                 // Modify the where clause here...
         }
         return $where;
 }
 }}}

 Core could then start using it for when calling WP_Query to identify the
 context of the query. This could go a long way to helping up make our
 sites more robust.

 I'll submit a patch if I get interest.

 -Mike

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Ticket URL: <http://core.trac.wordpress.org/ticket/15063>
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