Filter Relationships Query

This topic has 4 replies, 2 voices, and was last updated 3 years, 1 month ago by JC.

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October 27, 2021 at 7:36 PM #31549
JC
Participant
Hello,

I'm working on an events website. I have custom post types for venues and dates. The relationship is from the dates to the venues. I'm working on a query to show all dates from a venue single view. This one is working:
```
$connected = new WP_Query( [
   'relationship' => [
   'id'   => 'fromdatestovenues',
   'to' => get_the_ID(),
  ],
  'nopaging'     => true,
 ] );
```
How can I get only dates from the relationship where a custom select field ('wochentag_select') is set to a specific value?

Best

Jan

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October 27, 2021 at 11:13 PM #31555

Long Nguyen
Moderator

Hi,

You can add the meta query (field ID and value) to the arguments of the query to filter dates, please read more on the WP documentation https://developer.wordpress.org/reference/classes/wp_query/#custom-field-post-meta-parameters

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October 27, 2021 at 11:36 PM #31556
JC
Participant
Hi Long,

thanks for your answer. I'm probably doing something wrong, because the result isn't filtered:
```
$connected = new WP_Query( [
    'relationship' => [
    'id'   => 'fromdatestovenues',
    'to' => get_the_ID(),
    'meta_key'   => 'wochentag_select',
    'meta_value' => $dertag,],
    'nopaging'     => true,
] );
```
doesn't show any posts:
```
$connected = new WP_Query( [
    'relationship' => [
    'id'   => 'fromdatestovenues',
    'to' => get_the_ID(),
        ],
    'meta_key'   => 'wochentag_select',
    'meta_value' => $dertag,
    'nopaging'     => true,
] );
```
Is it relevant that the custom field is not in the post I'm running the query from, but in the post with the relationship?

In Views (Singleview) the working query is:

{% for post in relationships.fromdatestovenues.from|filter(post => post.wochentag_select.name == dertag or post.wochentag_select.name == heute)|sort((a, b) => b.wochentag_select <=> a.wochentag_select ?: a.startzeit <=> b.startzeit) %}

But I have to rewrite it to php.

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October 28, 2021 at 10:25 AM #31566
Long Nguyen
Moderator
Hi,

What is the value that you assign to the variable $dertag? Please assign a specific value to the argument meta_value to check if it works.
I also see that in the View code, the query uses from instead of to in the relationship arguments, you can change to from and re-check it.

On another note, adding the argument post_type to the query might help to specify a post type.
```
$connected = new WP_Query( [
    'post_type' => 'dates', //here
    'relationship' => [
        'id'   => 'fromdatestovenues',
        'to' => get_the_ID(), // change to 'from'?
    ],
    'meta_key'   => 'wochentag_select',
    'meta_value' => 'abcd',
    'nopaging'     => true,
] );
```
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October 28, 2021 at 6:17 PM #31592

JC
Participant

Hi,

thanks for your answer. I tried your suggestions in every combination without any success. I guess there is another problem. I'll try to solve this with custom categories instead of relationships then.

Best

Jan

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