[Directus Hook] Hit Counter on API read

index.js

module.exports = async ({ action }, { database: knex }) => {

    const collection_key = "page"; // collection key
    const id_field_key = "id";  // primary key of the collection
    const count_field_key = "read_count"; // must be an integer field

    action(`${collection_key}.items.read`, async ({ payload }) => {

        const IDs = [];

        for (const item of payload){
            if(item[id_field_key])
                IDs.push(item[id_field_key]);
        }

        if(IDs.length === 0)
            return;

        knex(collection_key)
            .whereIn(id_field_key, IDs)
            .increment(count_field_key, 1)
            .catch((err) => {});
    });

}