This article is for LoopBack 2.x, which is no longer supported. Please see the corresponding article for 3.x.

Basic model object

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Overview

By default, the basic LoopBack Model object has properties and methods "mixed in" from:

• Inclusion object - Enables you to load relations of several objects and optimize numbers of requests.
• Validateable object - provides validation methods; see Validating model data.

When you define relations between models, the RelationMixin object object also gets mixed in to the model object.

Events

The following table summarizes the events that LoopBack models can emit. For more information, see Events.

Event	Emitted when...	Arguments	Argument type	Class methods that emit	Instance methods that emit
'attached'	Model is attached to an app.	Model class	Object	app.model(modelName)
'dataSourceAttached'	Model is attached to a Data source.	Model class	Object	DataSource.prototype .createModel DataSource.prototype .define
'set'	Model property is set.	Model instance	Object	Model.prototype .setAttributes()