Retrieve posts by term id custom query
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22-04-2021 - |
Pergunta
i want to retrieve custom posts using using custom query . my taxonomy is recipe_tx and terms (Beef) , (Chicken) etc in it .
i have tried using
SELECT p.* FROM wp_posts p, wp_term_taxonomy tt, wp_term_relationships tr
WHERE p.ID=tr.`object_id`
AND tt.`term_id`=tr.`term_taxonomy_id`
AND (p.post_type = 'recipe_cpt')
AND p.post_status = 'publish'
AND tt.`term_taxonomy_id` = 37
but no luck .
can someone help me how to get wp posts by their term_id .
if beefs id is 37 then i want to retrieve all the posts
with term_id = 37
Thank's
Solução
Have you tried using the WP_Query class? You might find it's easier to use the built-in tools for this instead of a custom query from scratch. Something similar to the following should work for you:
<?php
$args = array(
'post_type' => 'recipe_cpt',
'tax_query' => array(
array(
'taxonomy' => 'recipe_tx',
'field' => 'term_id',
'terms' => 37
)
)
);
$query = new WP_Query( $args ); ?>
EDIT: note the tax_query
is an array of arrays by design. Many tax query problems are a result of missing this detail.
EDIT: corrected field
value typo above, replacing 'id' with 'term_id'.
Outras dicas
I know the question is answered, but if anyone is trying to achieve the same with a raw SQL query, you could try the following:
SELECT *
FROM wpiw_posts
WHERE ID IN (
SELECT object_id
FROM wpiw_term_relationships AS TR
INNER JOIN wpiw_term_taxonomy AS TT ON TR.term_taxonomy_id = TT.term_taxonomy_id
INNER JOIN wpiw_terms AS T ON TT.term_id = T.term_id
WHERE TT.taxonomy = 'recipe_tx' AND T.term_id = 37
)
The above query will get you all the posts that belong to the given taxonomy (recipe_tx) and term ID (37).
I know that this is an old post, but I just wanted to chime in.
@jdm2112 is correct. Just use the WP_Query class. This makes sure that if the database structure is ever updated in the future, your query still works.... However, since it looks like you are looking for a raw SQL answer, this is the actual SQL that WP_Query
would execute... at least as of WordPress 5.6. (I've adapted the SQL to your question)
SELECT * from wp_posts
LEFT JOIN
wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
WHERE
(wp_term_relationships.term_taxonomy_id IN (37)) AND
wp_posts.post_type = 'recipe_cpt' AND
wp_posts.post_status = 'publish'
GROUP BY wp_posts.ID
You can get the the actual query by creating a WP_Query
instance, then look at the request
property like so:
<?php
$args = [
'post_type' => 'recipe_cpt',
'tax_query' => [
[
'taxonomy' => 'recipe_tx',
'field' => 'term_id',
'terms' => 37
]
]
];
$queryObj = new WP_Query($args);
// This will give you the actual raw SQL query
$rawSqlQuery = $queryObj->request;