Count of records by Date MongoDB

Question

Here\'s a record Customers Collection

 {
    name: xyz,
    .
    .
    .
    createdAt: Sun Nov 20 2016 00:00:00 GMT+0530 (IST)
    lastModified: Sat Dec 10         


        

Answer 1

I got this sorted in yii2 by this

$aggregateResult = Yii::$app->mongodb->getCollection('patient')->aggregate([
            [
                '$match' => [
                    '$and' => [
                        ['deleted_at' => ['$exists' =>  false]],
                        ['registration_date' => ['$gte' =>  $startDateStamp, '$lte' => $endDateStamp]],
                    ]
                ]
            ],
            [
                '$group' => [
                    '_id' =>  [
                        'day' => ['$dayOfMonth' =>  ['$toDate' => ['$multiply' => ['$registration_date', 1000]]]],
                        'month' => ['$month' => ['$toDate' => ['$multiply' => ['$registration_date', 1000]]]],
                        'year' => ['$year' => ['$toDate' => ['$multiply' => ['$registration_date', 1000]]]]
                    ],
                    'count' => ['$sum' => 1],
                    'date' => ['$first' => ['$toDate' => ['$multiply' => ['$registration_date', 1000]]]]
                ]
            ],

            [
                '$project' => [
                    'date' => ['$dateToString' => ['format' => '%Y-%m-%d', 'date' => '$date']],
                    'count' => 1,
                    '_id' => 0
                ]
            ],
            ['$sort' => ['date' => 1]],

        ]);