Express / MongoDb 按 ID 查找所有对象并将它们保存到数组中

Posted 2023-03-10

??????Express / MongoDb ? ID ????????????????

??????:Express / MongoDb find all objects by ID and save them to an array

??????:2019-03-25 23:43:07

??????:

??monongodb??????:

let statSchema = new mongoose.Schema(
        title: String,
        statId: String,
        stats: 
            likeCount: Number,
            commentCount: Number
        
    );

let MyStat = mongoose.model("MyStat", statSchema);

??????????????????statId ???????????????

??????request(npm ??)?????,??????statId ?? API ?? JSON,? API ??????? statId ???? stats(likeCount ? commentCount) .

??????????:

MyStat.find(, function(err, foundStats)
    if (err) throw err;
    console.log(foundStats);
  );

??????????????,??????????“statId”?

?????console.log(foundStats.linkId);,????undefined?

??????:

Mongoose, Select a specific field with find?????

?????1?:

?? statId ???“_id”????????????? id ??,??? id ???? '_id' ????

??????,?????

MyStat.find(, '_id', function(err, foundStats)
    if (err) throw err;
    console.log(foundStats);
);

?“foundStats”?,??????????? id?

???????mongoose?mongoDB

????:

?????2?:

foundStats ???????????????

foundStats.forEach((element) => 
    console.log(element.statId);
);

?????? statId,???????:

 MyStat.find(, 'statId' , function(err, foundStats)
    if (err) throw err;
    console.log(foundStats);
  );

?????here

????: