How to output a value from array Mongoose?

问题

I have an array that contains the values: id, uid, level, I need to output the user id with level = 3 how do I do this? Sample code: "users": [{"id": 124, "uid": 2, "level": 1}, {"id": 553, "uid": 19, "level": 3}]

回答1:

Using mongoose you can do this using findOne:

yourModel.findOne({level:3},{id:1}).then(result => {
  console.log("result = ",result.id)
}).catch(e => {
  // error
})

Response is 553

Example how mongo query works here. This example output an array but ising findOne only one value will be returned, so you can do response.name directly and get the value.

来源：https://stackoverflow.com/questions/65860664/how-to-output-a-value-from-array-mongoose