angular model cache.js

if (!this.account) {
    return $http
        .post('/api/account/get', {})
        .then((r) => {
            this.account = BaseModel.parse(r);
            return BaseModel.parse(r);
        });
}
else {
    let deferred = $q.defer();
    deferred.resolve(this.account);
    return deferred.promise;
}