Question

将angular2与meteor一起使用，并提供以下数据：

#include <stdio.h>
#include <stdlib.h>

int main(void) {
    FILE *fin;
    FILE *fout;
    int i,j;
    int linecount = 0;
    int alphabetCount[26];

    if ((fin = fopen("blocks.in", "r")) == NULL) {
        fprintf(stderr, "Unable to open input file\n");
        exit(EXIT_FAILURE);
    }
    if ((fout = fopen("blocks.out", "w")) == NULL) {
        fprintf(stderr, "Unable to open output file\n");
        exit(EXIT_FAILURE);
    }     

    fscanf(fin," %d",&linecount);

    return 0;
}

我如何找到具有容量的工人 - available_capacity＆gt; 10
如何找到具有available_capacity＆gt; =容量的工人？

Answer 1

我如何找到具有容量的工人 - available_capacity＆gt; 10？

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

如何找到具有available_capacity＆gt; = capacity？

的工作人员

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

<强>更新

我刚用完了其他教程。我认为概念将是相同的

<强> 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}});
      });

    }]);
}

<强> Q2

我不知道总会在这里工作。猜猜

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
               }
           }
         ]
        );
      });
    }]);
}

如何使用db中的值查询mongo db？

1 个答案: