validation.js

// This validation check works:
user.validate().success(function() {
	user.save().success(function(user){
		console.log(user);
	}).error(function(errors) {
		console.log(errors);
	});
});

// Still trying to get this isUnique validation method working on my model:
email: {
	type: DataTypes.STRING,
	validate: {
		isEmail: {
			msg: 'Invalid email address.'
		},
		isUnique: function(value) {
			app.get('MODELS').User.find({
				where: { email: value }
			}).success(function(account) {
				throw new Error('Email is already registered.'); // Alone, this line works fine.
			});
		}
	}
}

// When the isUnique is added to my model, calling .validate(); generates:
Error: Email is already registered.
at null.<anonymous> (/Web/models/User.js:82:13)
at EventEmitter.emit (events.js:95:17)
at null.<anonymous> (/Code/sequelize/lib/query-interface.js:392:17)
at EventEmitter.emit (events.js:117:20)
at null.<anonymous> (/Code/sequelize/lib/dialects/mysql/query.js:32:14)
at Query.Sequence.end (/Code/sequelize/node_modules/mysql/lib/protocol/sequences/Sequence.js:66:24)
at Query._handleFinalResultPacket (/Code/sequelize/node_modules/mysql/lib/protocol/sequences/Query.js:143:8)
at Query.EofPacket (/Code/sequelize/node_modules/mysql/lib/protocol/sequences/Query.js:127:8)
at Protocol._parsePacket (/Code/sequelize/node_modules/mysql/lib/protocol/Protocol.js:172:24)
at Parser.write (/Code/sequelize/node_modules/mysql/lib/protocol/Parser.js:62:12)