[Resolved] query related post with multiple id

[Author]

Posts

[cosimoA]

Hi, i need to query a related post with multiple id. There is a way to do this? I use this code:

$args_macchine_brand=array(
'post_type' => 'macchina',
'order' => 'DESC',
'toolset_relationships' => array(
array(
'role' => 'child',
'related_to' => 68,
'relationship' => 'modello-macchina'
),
),
);

In "related_to" parameter i need to insert multiple id's to retrieve all chid posts of this id's.

Hope you can help.

[Minesh]

Hello. Thank you for contacting the Toolset support.

Well - its not possible to pass multiple post IDs to related_to argument as its not supported. You need to pass the single post ID for which you want to retrieve the child posts.

More info:
=> https://toolset.com/documentation/customizing-sites-using-php/post-relationships-api/how-to-migrate-your-site-to-new-post-relationships/#full-documentation-of-the-query-argument

We offer another function "toolset_get_related_posts()" that does the same thing if you do not want to use WP_QUERY:
=> https://toolset.com/documentation/customizing-sites-using-php/post-relationships-api/#toolset_get_related_posts

[cosimoA]

Hi, i prefer to use WP_Query.
However, the function "toolset_get_related_posts()" can accept multiple id's?
I need to retrieve posts which have different parents.
In the previous releases of types, when the relationships were stored as meta keys, i easily achieve this.

With the new release how i can do this?

Thank you and excuse me for my bad english.

[Minesh]

However, the function "toolset_get_related_posts()" can accept multiple id's?
=> No, its not supported as you can see with the arguments available.
- https://toolset.com/documentation/customizing-sites-using-php/post-relationships-api/#toolset_get_related_posts

I need to retrieve posts which have different parents.
In the previous releases of types, when the relationships were stored as meta keys, i easily achieve this.
=> May be you can loop through your parent IDs.

For example:

$parent_ids = array(101, 102);
foreach($parent_ids as $k=>$v):
  // add your code here where $v contains the parent ID each time the loop iterates 
endforeach;

[cosimoA]

Excuse me but i don't understand your solution.

Let me explain:

I have custom post type "brands".
I have custom post type "models" which is "brands" child.
I have custom post type "machines" which is "models" child but no have a direct relation to "brands".

In "single-brands.php" i need to show all models related to parent brand and all machines related to models that are children of the brand.

In previous releases of types(before version 3) this was quite easy.

How i can do this with the new version of types?

Thank you again.

[Minesh]

well - there is a limitation that WP_Query cant support such method for now.

But after consulting our Dev - this is the one of the way you can pass multiple parents using post-relationship API function toolset_get_related_posts() :

$returned_ids = toolset_get_related_posts(
    array( 'parent'=> array(111,999)),
    'relaltionship-slug',
    null,
    100,
    0,
    array(),
    'post_id',
    'child'
);

Where:
- Replace 'relationship-slug' with your original relationship slug
- Replace 111 and 999 with your parent post IDs

In addition to this, I'm also taking feature request to extend WP_Query method that supports such cases.