mongodb在数组中找到数组元素

Question

• 我是mongo db的新手。
• 我试图让我的丰田汽车制造商独自一人。

• 编写了mongo db查询代码，但它没有产生结果。 var cursor = db.collection（＆＃39; user-data＆＃39;）。find（{carManufacturer：{$ eq：toyota}}）;

• 你能告诉我如何修复它，提供我的代码

router.get('/cars', function(req, res, next) {
  console.log("kumari5");
  res.render('cars.hbs');
  var toyota = [];
  mongo.connect(url, function(err, db) {
    assert.equal(null, err);
    var cursor = db.collection('user-data').find( { carManufacturer: { $eq: toyota } } );

    cursor.forEach(function(doc, err) {
      assert.equal(null, err);
      toyota.push(doc);
    }, function() {
      db.close();
      res.render('data', {items: toyota});
      console.log(toyota);
    });
  });
});



{
  "_id": ObjectId("590a2495bd1d3a356074d36e"),

  "DateBough": "21",
  "Owner": "Female",
  "carManufacturer": ["toyota", "19"],
  "Expiry": null
}

{
  "_id": ObjectId("347834783478873478788734"),

  "DateBough": "21",
  "Owner": "Female",
  "carManufacturer": ["bmw", "19"],
  "Expiry": null
}

{
  "_id": ObjectId("34634738468299221182338989"),

  "DateBough": "21",
  "Owner": "Female",
  "carManufacturer": ["benz", "19"],
  "Expiry": null
}

{
  "_id": ObjectId("47347347834783487437834734"),

  "DateBough": "21",
  "Owner": "Female",
  "carManufacturer": ["toyota", "19"],
  "Expiry": null
}