如何使用Dynamoose删除表格

Question

如何删除Dynamoose中的表格？

例如，是否有Model.deleteTable()函数？

Answer 1

我建议创建一个小模块，在其中为dynamoose导入添加其他配置。

const dynamo = require('dynamoose')
const constants = require('../constants')

let oldModelFunction = dynamo.model

dynamo.model = function () {
    let compiledModel = oldModelFunction.apply(this, arguments)
    let name = compiledModel.$__.name
    compiledModel.modelName = name.toLowerCase()

    // Add deleteTable method
    compiledModel.deleteTable = () => {
        return new Promise((resolve, reject) => {
            dynamo.ddb().deleteTable({ TableName: compiledModel.$__.name }, (err, resp) => {
                if (err) reject(err)
                else resolve(resp)
            })
        })
    }

    return compiledModel
}

module.exports = dynamo

然后，您可以创建模型并按如下方式使用它：

const dynamo = require('./mydynamoose')

const Schema = dynamo.Schema

let UserSchema = new Schema({
    username: String,
    name: String,
    age: Number
})

const User = dynamo.model("User", UserSchema)

User.deleteTable().then(res => {
    // Check response
}).catch(err => {
    console.log(err)
})