mou*_*777 3 mongoose mongodb node.js
我有以下 hapi.js 服务器
const Hapi = require('hapi')
const Mongoose = require('mongoose')
const Wreck = require('wreck');
const server = new Hapi.Server({
"host": "localhost",
"port": 3000
})
Mongoose.connect('mongodb://localhost/myDB', { useNewUrlParser: true })
const BlockModel = Mongoose.model('block', {
height: Number,
size: Number,
time: Number
})
server.route({
method: "GET",
path: "/",
handler: async (request, h) => {
Mongoose.model.blocks.remove({}); //<------This is the part of the code I intend to use to delete the collection
const { res, payload } = await Wreck.get('https://api.url');
let myJson = JSON.parse(payload.toString()).blocks
console.log(myJson)
for (let i = 0; i<myJson.length; i++) {
var block = new BlockModel({ height: myJson[i].height, size: myJson[i].size, time: myJson[i].time });
block.save();
}
console.log(myJson)
return "test"
}
})
server.start();
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重点是,它工作正常并将所需的数据保存到我的集合中,但是如果我不删除每次执行的数据,数据库将继续增长。所以我打算实施类似于
db.blocks.remove({}) //where blocks is my collection
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这在 mongoconsole 中运行良好。但我找不到如何在代码中实现这一点
Tom*_*ert 10
您可以使用带有空过滤器的 deleteMany 运算符。
db.collection.deleteMany({})
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或使用您的模型:
await BlockModel.deleteMany({})
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