Mongodb 如何使用数据库中的值查询mongo数据库？

使用angular2和meteor，使用以下数据：

{ "_id" : "DxEraKtfYavoukdCK", "name" : "Aaron", "capacity" : 20,  "available_capacity" : 15, "location" : "1" }
{ "_id" : "yMhEggaGmS7iio9P4", "name" : "Benard", "capacity" : 20,  "available_capacity" : 20, "location" : "2" }
{ "_id" : "TTD2wedGYWaLctJHt", "name" : "Candy", "capacity" : 50, "available_capacity" : 15, "location" : "3" }

如何找到容量-可用容量>10的工人

db.collection('workers').find({"capacity": {$gt: 10}}).toArray(function (err, res)    
{
      if (err) throw err;
      console.log(res);
});

如何找到具有可用容量>=容量的工人

db.collection('workers').aggregate(
[
  {
   $project:
      {
        _id: 1,
        name: 1,
        capacity:1,
        capacity_available: { $gte: $capacity},
        location: 1
      }
    }
  ]
);

如何找到容量-可用容量>10的工人

db.collection('workers').find({"capacity": {$gt: 10}}).toArray(function (err, res)    
{
      if (err) throw err;
      console.log(res);
});

如何找到具有可用容量>=容量的工人

db.collection('workers').aggregate(
[
  {
   $project:
      {
        _id: 1,
        name: 1,
        capacity:1,
        capacity_available: { $gte: $capacity},
        location: 1
      }
    }
  ]
);

更新

我刚刚用完了其他教程。我认为这个概念是一样的

Q1

Workers = new Mongo.Collection('workers');

if (Meteor.isClient) {

  // This code only runs on the client
  angular.module('simple-todos',['angular-meteor']);

  angular.module('simple-todos').controller('TodosListCtrl', ['$scope', '$meteor',
    function ($scope, $meteor) {

      $scope.findWorkers = $meteor.collection( function() {
        return Workers.find({"capacity": {$gt: 10}});
      });

    }]);
}

Q2

我不知道你要在这里工作。猜猜看

Workers = new Mongo.Collection('workers');

if (Meteor.isClient) {

  // This code only runs on the client
  angular.module('simple-todos',['angular-meteor']);

  angular.module('simple-todos').controller('TodosListCtrl', ['$scope', '$meteor',
    function ($scope, $meteor) {

      $scope.findWorkers = $meteor.collection( function() {
        return Workers.aggregate(
        [
           {
              $project:
               {
                 _id: 1,
                 name: 1,
                 capacity:1,
                 capacity_available: { $gte: $capacity},
                 location: 1
               }
           }
         ]
        );
      });
    }]);
}

如何找到容量-可用容量>10的工人

db.collection('workers').find({"capacity": {$gt: 10}}).toArray(function (err, res)    
{
      if (err) throw err;
      console.log(res);
});

如何找到具有可用容量>=容量的工人

db.collection('workers').aggregate(
[
  {
   $project:
      {
        _id: 1,
        name: 1,
        capacity:1,
        capacity_available: { $gte: $capacity},
        location: 1
      }
    }
  ]
);

更新

我刚刚用完了其他教程。我认为这个概念是一样的

Q1

Workers = new Mongo.Collection('workers');

if (Meteor.isClient) {

  // This code only runs on the client
  angular.module('simple-todos',['angular-meteor']);

  angular.module('simple-todos').controller('TodosListCtrl', ['$scope', '$meteor',
    function ($scope, $meteor) {

      $scope.findWorkers = $meteor.collection( function() {
        return Workers.find({"capacity": {$gt: 10}});
      });

    }]);
}

Q2

我不知道你要在这里工作。猜猜看

Workers = new Mongo.Collection('workers');

if (Meteor.isClient) {

  // This code only runs on the client
  angular.module('simple-todos',['angular-meteor']);

  angular.module('simple-todos').controller('TodosListCtrl', ['$scope', '$meteor',
    function ($scope, $meteor) {

      $scope.findWorkers = $meteor.collection( function() {
        return Workers.aggregate(
        [
           {
              $project:
               {
                 _id: 1,
                 name: 1,
                 capacity:1,
                 capacity_available: { $gte: $capacity},
                 location: 1
               }
           }
         ]
        );
      });
    }]);
}

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如何获取angularjs meteor中的db对象？如何获取angularjs meteor中的db对象？