var memory = asteroid.createDataSource({adapter: 'memory'});
var Color = memory.defineModel({name: String});
app.model(Color);
app.use(asteroid.rest());
**Note:** this will expose all [shared methods](#shared-methods) on the model.
#### app.models()
Get the app's exposed models.
var models = app.models();
models.forEach(function (Model) {
console.log(Model.name); // color
});
### Model
An Asteroid `Model` is a vanilla JavaScript class constructor with an attached set of properties and settings.
**Properties**
A model defines a list of property names, types and other validation metadata. A [DataSource](#data-source) uses this definition to validate a `Model` during operations such as `save()`.
**Settings**
Some [DataSources](#data-source) may support additional `Model` settings.
Define an asteroid model.
var User = asteroid.createModel('user', {
first: String,
last: String,
age: Number
});
#### Model.attachTo(dataSource)
Attach a model to a [DataSource](#data-source). Attaching a [DataSource](#data-source) updates the model with additional methods and behaviors.
var oracle = asteroid.createDataSource({
adapter: 'oracle',
host: '111.22.333.44',
database: 'MYDB',
username: 'username',
password: 'password'
});
User.attachTo(oracle);
**Note:** until a model is attached to a data source it will only expose the API defined below.
#### Static Methods
Define a static model method.
User.login = function (username, password, fn) {
var passwordHash = hashPassword(password);
this.findOne({username: username}, function (err, user) {
var failErr = new Error('login failed');
if(err) {
fn(err);
} else if(!user) {
fn(failErr);
} else if(user.password === passwordHash) {
MySessionModel.create({userId: user.id}, function (err, session) {
fn(null, session.id);
});
} else {
fn(failErr);
}
});
}
Expose the static model method to clients using remoting.
