Class: HasOne<OM, TM, PKT, FM, PKF>

Represents a one-to-one relationship between two models where the ID of the originating model is stored as a property of the foreign model.

Description

For example, a user has a single profile:

In your configuration you would have:

{
  ...
  models: {
      users: {
        schema: '++id, email, createdAt, updatedAt',
        properties: ['id', 'email', 'password'],
        primaryKey: 'id',
        relationships: {
          profile: [HasOne, 'profiles', 'user_id'], 
        }
      },
      profiles: {
        schema: '++id, user_id, full_name, avatar_url',
        properties: ['id', 'user_id', 'full_name', 'avatar_url'],
      }
  },
  ...
}

Which will then allow you to access the profile of a user from the profile accessor on the user model: user.profile.

Remarks

The inverse of this relationship is the BelongsTo relationship. Configured using the HasOneConfiguration tuple.

Extends

• RelationshipBase<ReactiveModel<OM[FM], PKF, any>, OM, TM, PKT, FM, PKF, OM[TM], OM[FM]>

Type Parameters

Type Parameter	Description
OM extends Record<string, PlainObject>	the map of all models in the database
TM extends StringKeyOf<OM>	the table of the originating model
PKT extends StringKeyOf<OM[TM]>	the property used as the primary key in the originating model
FM extends StringKeyOf<OM>	the table of the foreign model
PKF extends StringKeyOf<OM[FM]>	the property used as the primary key in the foreign model