[Node.js] Create a model to persist data in a Node.js LoopBack API-优快云博客

本文介绍如何使用LoopBack CLI创建基于PersistedModel的产品模型，并利用API Explorer进行产品数据的存储、检索、编辑和删除操作。文章还介绍了如何通过lbmodel命令自动生成REST API及相关的文件配置。

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In this lesson you will learn what a LoopBack model is, you will create a Product model using the LoopbBack CLI. The product model will be based off the built-in PersistedModel which gives it basic functionality like Create, Ready, Update, Delete and some more. Using the API Explorer you can interact with the new model, store, retrieve, edit and delete the product data.

Create a REST API model:

lb model

Give the information needed, it can generate all the rest api.

There are few files will be created.

common/models/[model_name].js

common/models/[model_name].json

There is one file will be modified:

server/model-config.json:

  "Product": {
    "dataSource": "db",
    "public": true
  }

So if you want to remove the model, you can delete those generated stuff.

If the data are stored in memory, it means once you restart the server, the data will lost, one way to keep the data for development:

datasources.json:

{
  "db": {
    "name": "db",
    "connector": "memory",
    "file": "db.json"
  }
}

Add "file" prop, it will store data inside the db.json.

转载于:https://www.cnblogs.com/Answer1215/p/6794439.html