[Resolved] Dynamic population of select: only 5 options are loaded

[Author]

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[peterV-10]

I have a new post type "Project".
I created 2 custom fields of type "Select" in this post type.
Options of these 2 select fields must be the titles (text) and postid (value) of all available projects.
Reason: I use these dropdowns to select "Other relevant projects".

For this, I created a filter in functions.php:
// ----------------------------------
//dynamically populate select field from Types
add_filter( 'wpt_field_options', 'prefix_custom_options', 10, 3);
function prefix_custom_options( $options, $title, $type ){
switch( $title ){
case 'Gerelateerd Project 1':
$options = array();
$args = array(
'post_type' => 'project',
'post_status' => 'publish');

$options[] = array(
'#value' => 0,
'#title' => 'Kies een project...',
);

$posts_array = get_posts( $args );
foreach ($posts_array as $post) {
$options[] = array(
'#value' => $post->ID,
'#title' => $post->post_title,
);
}
break;
case 'Gerelateerd Project 2':
$options = array();
$args = array(
'post_type' => 'project',
'post_status' => 'publish');

$options[] = array(
'#value' => 0,
'#title' => 'Kies een project...',
);

$posts_array = get_posts( $args );
foreach ($posts_array as $post) {
$options[] = array(
'#value' => $post->ID,
'#title' => $post->post_title,
);
}
break;
}
return $options;
}
// ----------------------------------

This works, BUT the select fields each show only 5 options, while there are 8 published projects.
More in detail: only the 5 youngest are shown. When I create a new test project, this is added in the options list, and the oldest one disappears.

My question: is there a limit of 5 I am not aware of? Is there something else I'm doing wrong?
Thank you!

[Luo Yang]

Hello,

Please try to add Pagination limitation parameter in $args, for example:

$args = array(
'post_type' => 'project',
'post_status' => 'publish',
'posts_per_page'=>-1
);

And test again

[peterV-10]

My issue is resolved now. Thank you very much!