Query posts by custom taxonomy ID

I have a custom post type called `portfolio` and a custom taxonomy called `build-type` (acting as categories)

I am trying to query `portfolio` posts by `build-type` ID e.g. all Portfolio posts in "Hotels" (id=4 for that taxonomy)

// gets the ID from a custom field to show posts on a specific page
$buildType = get_post_meta($post->ID, 'build_type_id', true);
// run query
query_posts(array(
'post_type' => 'portfolio',
'showposts' => -1,
'tax_query' => array(
'taxonomy' => 'build-type',
'terms' => $buildType,
'field' => 'term_id'
),
'orderby' => 'title',
'order' => 'ASC'
));



Currently it's calling **all** `portfolio` posts and not just those with the `build-type` ID

For `'field' => 'term_id'` should I be using `term_id`, `tag_ID`, `id` or something else?

Anyone know how to get this working?

Thanks in advance!

I'm not a WP-gury and I have invested hours and hours trying to solve the same problem. Eventually I found this blog post:

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The answer is somewhat semi-bad: apparently you can't filter like this for custom post types (it is only possible for posts), which is a shame!

What I did work was this:

$args['custom_tax'] = 'custom_tax_slug';
query_posts($args);

Hope it helps!

//Mike

I solved it with help from:

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`tax-query` needs to be an array of arrays

The final solution is:


// gets the ID from a custom field to show posts on a specific page
$buildType = get_post_meta($post->ID, 'build_type_id', true);
// run query
query_posts(array(
'post_type' => 'portfolio',
'showposts' => -1,
'tax_query' => array(
array(
'taxonomy' => 'build-type',
'terms' => $buildType,
'field' => 'term_id',
)
),
'orderby' => 'title',
'order' => 'ASC' )
);

On github here:

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