A belongsTo relationship is a many-to-one relationship. For instance, a Post may belong to a User.
The first value passed to belongsTo is a WireBox mapping to the related entity.
Quick determines the foreign key of the relationship based on the entity name and key values. In this case, the Post entity is assumed to have a userId foreign key. You can override this by passing a foreign key in as the second argument:
If your parent entity does not use id as its primary key, or you wish to join the child entity to a different column, you may pass a third argument to the belongsTo method specifying your parent table's custom key.
The inverse of belongsTo is or .
Updating
To update a belongsTo relationship, use the associate method. associate takes the entity to associate as the only argument.
associate does not automatically save the entity. Make sure to call save when you are ready to persist your changes to the database.
Removing
To remove a belongsTo relationship, use the dissociate method.
dissociate does not automatically save the entity. Make sure to call save when you are ready to persist your changes to the database.
Relationship Setter
You can also influence the associated entities by calling "set" & relationshipName and passing in an entity or key value.
After executing this code, the post would be updated in the database to be associated with the user with an id of 1.
withDefault
BelongsTo relationships can be configured to return a default entity if no entity is found. This is done by calling withDefault on the relationship object.
Called this way will return a new unloaded entity with no data. You can also specify any default attributes data by passing in a struct of data to withDefault.
Signature
Returns a BelongsTo relationship between this entity and the entity defined by relationName.