how to make a WP_Query by A or B?

• 

  miguelbucarest · Member · Apr 24, 2013 at 11:14 am

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  Hello, I tried to find out by myself the answer to this but i found no post about it… or entry in the forum.

  I have to retrieve a list of posts which must belog to a certain category OR to a certain custom post type.

  For example, i have a normal post categorized as NEWS (cat_ID = 3) (N1) and i have a custom post type called “interviews”, with for example 3 posts (I1, I2, I3) and lets say other custom post type called “OTHER” with 2 posts, O1, O2

  When i query for the posts, i want to get in the lists /array returned: N1, I1, I2, I3, O1, O2 (irrelevant order…)

  I am trying it through WP_Query but i have no luck… My code snippet is:

  
$args = array(
'post_type' => array('interviews', 'other')
,'cat' => 3
,'posts_per_page' => self::limit_posts
,'orderby'=>'date'
,'order'=>'DESC'
// ,'meta_key'=>'_thumbnail_id'
// ,'meta_compare'=>'>='
// ,'meta_value'=>'1'
);

  $posts_custom = new WP_Query($args);
  var_dump( $posts_custom );die;

  And i get nothing… if i query only by post_type or only by category, i do get results…

  how can i make that “OR” query?

  I hope i made myself understood ^_^and thank you in advance