Get unique meta data from entities : Elgg.org

Get unique meta data from entities

By adrew22a 870 days ago

How can I get all the unique metadata in a list of entities?

Example:
I have entities with a subtype "posts" with a metadata "area" that the user inputs in a form.

I want to get an array of all the unique metadata "area" from the entities with subtype "post"

I know the following is wrong, just an idea of what I'm trying to do.

$entities = elgg_get_entities($options);
$array_areas = $entities->area

Nikolai Shcherbin 870 days ago

$options = [
    'type' => 'object',
    'subtype' => 'posts',
    'limit' => 10,
];

$entities = elgg_get_entities($options);

$values = [];

foreach($entities as $entity) {
     $values[] = $entity->area;
}

echo var_export($values, true);

Jerome Bakker 868 days ago

$metadata = elgg_get_metadata([
    'type' => 'object',
    'subtype' => 'posts',
    'metadataname' => 'area',
    'limit' => false,
    'batch' => true, // if you have a lot of posts
]);
$values = [];
foreach ($metadat as $md) {
   $values[] = $md->value;
}
$unique = array_unique($values);

There are metadata function, no need to get it through the entities.

- Nikolai Shcherbin@rivervanrain
Nikolai Shcherbin 868 days ago
- 1 like
'metadata_names' => 'area',
instead of
'metadataname' => 'area',

Get unique meta data from entities

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