Node.js 使用关联生成和保存

我正在尝试构建一个用户，创建一个位置（我正在使用谷歌地理编码API）并保存所有内容，但数据库中没有创建关联。一切正常。响应正是我想要的，但是当我进入数据库时，关联没有被创建。唯一可行的方法是单独创建和保存位置实体，并直接将外键“locationId”设置为新生成的ID。已经快一个星期了，我仍然不知道如何使其工作。如果可以的话，我也在使用PostgreSQL。这是你的医生

以下是我的联想：

User.belongsTo(models.Location, { as: 'location', foreignKey: 'locationId' });
Location.hasMany(models.User, { as: 'users', foreignKey: 'locationId' });

这是我的控制器代码：

const createRandomToken = crypto
  .randomBytesAsync(16)
  .then(buf => buf.toString('hex'));

const createUser = token => User.build({
  firstName: req.body.firstName,
  lastName: req.body.lastName,
  email: req.body.email,
  passwordResetToken: token,
  passwordResetExpires: moment().add(1, 'days'),
  role: req.body.roleId,
  active: true
}, {
  include: [{ model: Location, as: 'location' }]
});

const createLocation = (user) => {
  if (!user) return;
  if (!req.body.placeId) return user;
  return googleMapsHelper.getLocationByPlaceId(req.body.placeId).then((location) => {
    user.location = location;
    return user;
  });
};

const saveUser = (user) => {
  if (!user) return;
  return user.save()
    .then(user => res.json(user.getPublicInfo()));
};

createRandomToken
  .then(createUser)
  .then(createLocation)
  .then(saveUser)
  .catch(Sequelize.ValidationError, (err) => {
    for (let i = 0; i < err.errors.length; i++) {
      if (err.errors[i].type === 'unique violation') {
        return next(createError.Conflict(err.errors[i]));
      }
    }
  })
  .catch(err => next(createError.InternalServerError(err)));

---

在使用sequelize Github来回几次之后，我实现了使用事务、setters和修改承诺逻辑来做同样的事情

const createLocation = new Promise((resolve, reject) => {
  if (!req.body.placeId) return resolve();
  googleMapsHelper
    .getLocationByPlaceId(req.body.placeId)
    .then(location => resolve(location))
    .catch(() => reject(createError.BadRequest('PlaceId invalide')));
});

const createUser = () => sequelize.transaction((t) => {
  const user = User.build({
    firstName: req.body.firstName,
    lastName: req.body.lastName,
    email: req.body.email,
    passwordResetToken: crypto.randomBytes(16).toString('hex'),
    passwordResetExpires: moment().add(1, 'days'),
    active: true
  });
  return user.save({ transaction: t })
    .then(user => createLocation
      .then(location => user.setLocation(location, { transaction: t })));
});

createUser
  .then(user => res.json(user))
  .catch(err => httpErrorHandler(err, next));

const createLocation = new Promise((resolve, reject) => {
  if (!req.body.placeId) return resolve();
  googleMapsHelper
    .getLocationByPlaceId(req.body.placeId)
    .then(location => resolve(location))
    .catch(() => reject(createError.BadRequest('PlaceId invalide')));
});

const createUser = () => sequelize.transaction((t) => {
  const user = User.build({
    firstName: req.body.firstName,
    lastName: req.body.lastName,
    email: req.body.email,
    passwordResetToken: crypto.randomBytes(16).toString('hex'),
    passwordResetExpires: moment().add(1, 'days'),
    active: true
  });
  return user.save({ transaction: t })
    .then(user => createLocation
      .then(location => user.setLocation(location, { transaction: t })));
});

createUser
  .then(user => res.json(user))
  .catch(err => httpErrorHandler(err, next));