小编nod*_*ini的帖子

尝试运行无服务器时收到以下警告。

无服务器警告 -------------------------------------

找不到满足声明 'opt:stage' 的有效选项。下面是我的 serverless.yml 文件

# Serverless Config
service: api-service

# Provider
    provider:
      name: aws
      runtime: nodejs8.10
      region: ${opt:region, 'ap-east-1'}
      stage: ${opt:stage, 'dev'}
      # Enviroment Varibles
      environment:
        STAGE: ${self:custom.myStage}
        MONGO_DB_URI: ${file(./serverless.env.yml):${opt:stage}.MONGO_DB_URI}
        LAMBDA_ONLINE: ${file(./serverless.env.yml):${opt:stage}.LAMBDA_ONLINE}


    # Constants Varibles
    custom:
        # environments Variables used for convert string in upper case format
        environments:
        myStage: ${opt:stage, self:provider.stage}
        stages:
          - dev
          - qa
          - staging
          - production
        region:
          dev: 'ap-east-1'
          stage: 'ap-east-1'
          production: 'ap-east-1'

    # Function
    functions:
      testFunc:
        handler: index.handler
        description: ${opt:stage} API's …

我想删除字符串中间的空格,$.trim()例如:

console.log($.trim("hello,           how are you?       "));

我明白了:

hello,           how are you?

我怎样才能得到

hello, how are you?

谢谢.

Mongodb系列 -

[
{ name: 'name 1', call: 'Success Call' },
{ name: 'name 1', call: 'Repeat Call' },
{ name: 'name 3', call: 'Repeat Call' },
{ name: 'name 3', call: 'Unsuccess Call' }
{ name: 'name 2', call: 'Success Call' },
{ name: 'name 2', call: 'Repeat Call' }
{ name: 'name 2', call: 'Repeat Call' }
{ name: 'name 2', call: 'Unsuccess Call' }
.
.
.
.
]

我遵循这个链接组并使用聚合框架对多个列求和,最后得到了这个输出.

[
{
    "_id": 1,
    "Calls": …

我想定义我自己的静态/方法来保存我的模型的文档.

我试过这个:

userSchema.statics.saveUser = function(data, callback){
    data.save(callback);
};

它说data.save()不是一个函数.它无法识别该功能.

然后我试了这个

userSchema.statics.saveUser = function(data, callback){
    data = new userSchema(data);
    data.save(callback);
};

userSchema不是一个函数.