I'm trying to insert custom taxonomies using wp_insert_post() and the tax_input argument, but it doesn't work. I want to set a post to a custom taxonomy ('types') and a category ('cars')

$new_post = array(

        'post_title'    =>   $title,

        'post_content'  =>   $description,

        'tax_input' =>   array('types' => array('cars')),  

        'post_status'   =>   'pending',          

        'post_type' =>   'vehicles'  

  • 1
    where are you trying to use this? if the current user doesn't have permission to assign terms in that taxonomy, it will fail. – Milo Mar 27 '14 at 18:17
  • Everything else, except that line of 'tax_input' goes perfectly. I test it as admin, so maybe that is not the problem :/ ? – worldwildwebdev Mar 27 '14 at 18:40
  • Is "cars" a category or a term in your custom taxonomy? – s_ha_dum Mar 27 '14 at 18:44
  • I guess it's a term. My custom taxonomy is called 'types' and my categories are as followed: cars, trucks, etc. – worldwildwebdev Mar 27 '14 at 20:13

I find the answer. After building my arguments for wp_insert_post() function and passed it to a variable $pid i set the following line after that and everything works slightly.

wp_set_object_terms($pid, 'cars', 'types', true);

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