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Reverse Single Reference

This field will be an array of all items from a specified collection that point to given item in a given field.

For example, assume you have two collections: "dogs" and "shelters". Each dog
can belong to one shelter, but a shelter can be taking care of multiple dogs at
the same time. We have a one-to-many relationship.

Assigning dogs to shelters in this scenario can be easily be done with a
single-reference field in the dogs collection.

If we add a reverse-single-reference field to the shelters collection, that
field will always be an array of ids of dogs that are assigned to that shelter.
What's more, loading attachments for that shelter will make Sealious attach all
the dogs' data, not only the ids.

Constructor params

new FieldTypes.ReverseSingleReference({
    referencing_collection: "dogs", // the name of the collection to watch
    referencing_field: "shelter",  // the field within that collection to watch
})

Example

const app = new (class extends App {
    config = {
        /*...*/
    };
    manifest = {
        /*...*/
    };
    collections = {
        ...App.BaseCollections,
        dogs: new (class extends Collection {
            fields = {
                name: new FieldTypes.Text(),
                shelter: new FieldTypes.SingleReference("shelters"),
            };
        })(),
        shelters: new (class extends Collection {
            fields = {
                dogs = new FieldTypes.ReverseSingleReference({
                    referencing_collection: "dogs",
                    referencing_field: "shelter",
                }),
            };
        })(),
    };
})();

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