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/Sequelize

HasOne

Extends:

One-to-one association

In the API reference below, add the name of the association to the method, e.g. for User.hasOne(Project) the getter will be user.getProject(). This is almost the same as belongsTo with one exception - The foreign key will be defined on the target model.

See:

Model.hasOne

Method Summary

Public Methods
public	create(sourceInstance: Model, values: Object, options: Object): Promise<Model> Create a new instance of the associated model and associate it with this.
public	get(instances: Model \| Array<Model>, options: Object): Promise<Model> Get the associated instance.
public	set(sourceInstance: Model, associatedInstance: <Model> \| string \| number, options: Object): Promise Set the associated model.

Inherited Summary

From class Association
public	associationType: string The type of the association.
public	source: Model
public	target: Model

Public Methods

public create(sourceInstance: Model, values: Object, options: Object): Promise<Model> source

Create a new instance of the associated model and associate it with this.

Params:

Name	Type	Attribute	Description
sourceInstance	Model		the source instance
values	Object	optional default: {}	values to create associated model instance with
options	Object	optional	Options passed to `target.create` and setAssociation.

Return:

Promise<Model>

The created target model

See:

Model#create for a full explanation of options

public get(instances: Model | Array<Model>, options: Object): Promise<Model> source

Get the associated instance.

Params:

Name	Type	Attribute	Description
instances	Model \| Array<Model>		source instances
options	Object	optional	find options
options.scope	string \| boolean	optional	Apply a scope on the related model, or remove its default scope by passing false
options.schema	string	optional	Apply a schema on the related model

Return:

Promise<Model>

See:

Model.findOne for a full explanation of options

public set(sourceInstance: Model, associatedInstance: <Model> | string | number, options: Object): Promise source

Set the associated model.

Params:

Name	Type	Attribute	Description
sourceInstance	Model		the source instance
associatedInstance	<Model> \| string \| number	optional nullable: true	An persisted instance or the primary key of an instance to associate with this. Pass `null` or `undefined` to remove the association.
options	Object	optional	Options passed to getAssociation and `target.save`

Return:

Promise