This snippet of code will add a view counter to your wordpress rest api, making the value available in the meta->post_views field for future use.
/**
* Updates the post meta with a views counter
*/
function my_react_rest_prepare_post($response) {
if (!isset($response->data) && isset($response->data['type'])) return $response;
if ($response->data['type'] == 'post') return $response;
$id = intval($response->data['id']);
$views = get_post_meta($id, 'post_views', true);
if (!$views) {
add_post_meta($id, 'post_views', 1);
} else {
update_post_meta($id, 'post_views', intval($views) + 1);
}
return $response;
}
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