猫鼬模式验证

Question

在我拥有的架构中

email: {
        type: String,
        required: [true, "Email is required"],
        unique: true
    }
for validation with "unique" i am create
schema.path('email').validate(function(v){
    mongoose.models['User'].findOne({email: this.email}, function(err, user){
        if(err){
            throw err;
        }else{
            if(user){
                this.invalidate("email", "Email exists!");
            }
        }
    });
}, null);

但我有一个错误： this.invalidate 不是函数。谁能帮我？

Answer 1

你需要使用asynchronous validation:

schema.path('email').validate(function(email, callback) {
  mongoose.models['User'].findOne({ email : mail }, function(err, user) {
    if (err) {
      return callback(false, 'Unable to check for e-mail uniqueness due to database error');
    } else if (user) {
      return callback(false, 'E-mail should be unique');
    } else {
      return callback(true);
    }
  });
});