如何 Async/Await 的使用 Mongoose 的 find()

Question

Mongoose find(filter, callback) 函数允许您查询具有给定键/值的文档，它将返回与给定过滤器匹配的文档数组。 您可以将此函数与异步调用一起使用，如下所示：

const Character = mongoose.model('Character', mongoose.Schema({
  name: String,
  age: Number,
  rank: String
}));
await Character.create([
  { name: 'Jean-Luc Picard', age: 59, rank: 'Captain' },
  { name: 'William Riker', age: 29, rank: 'Commander' },
  { name: 'Deanna Troi', age: 28, rank: 'Lieutenant Commander' },
  { name: 'Geordi La Forge', age: 29, rank: 'Lieutenant' },
  { name: 'Worf', age: 24, rank: 'Lieutenant' }
]);
// The query to find all the Lieutenants
const query = await Character.find({ rank: 'Lieutenant' }); // will return Worf and La Forge

如果您在 find() 调用，它会 找到所有文件 。

await Character.create([
  { name: 'Jean-Luc Picard', age: 59, rank: 'Captain' },
  { name: 'William Riker', age: 29, rank: 'Commander' },
  { name: 'Deanna Troi', age: 28, rank: 'Lieutenant Commander' },
  { name: 'Geordi La Forge', age: 29, rank: 'Lieutenant' },
  { name: 'Worf', age: 24, rank: 'Lieutenant' }
]);
// Parameter omitted
const query = await Character.find(); // returns the above array with an _id property and __v property