koa-mongo-dv4 v2.0.0

koa-mongo

koa-mongo is a mongodb middleware for koa@2, support connection pool.

Install

npm i koa-mongo --save

Usage

app.use(mongo({
  uri: 'mongodb://admin:123456@localhost:27017/test?authSource=admin', //or url
  max: 100,
  min: 1
  ...
}));

defaultOptions:

{
  uri: 'mongodb://admin:123456@localhost:27017/test?authSource=admin', //or url
  max: 100,
  min: 1,
  acquireTimeoutMillis: 100
}

More options see generic-pool.

ctx.mongo & ctx.db

ctx.mongo is an instance of MongoClient.

ctx.db === ctx.mongo.db(dbName)

Example

const Koa = require('koa')
const mongo = require('koa-mongo')

const app = new Koa()

app.use(mongo())
app.use(async (ctx, next) => {
  // ctx.db === ctx.mongo.db('test')
  const result = await ctx.db.collection('users').insert({ name: 'haha' })
  const userId = result.ops[0]._id.toString()
  ctx.body = await ctx.db.collection('users').find().toArray()
  ctx.db.collection('users').remove({
    _id: mongo.ObjectId(userId)
  })
})
app.listen(3000, () => {
  console.log('listening on port 3000')
})

License

MIT