如何使用 Laravel 和 MongoDB 匹配连接的集合？

Question

我有两个集合“bookings”和“users”。在“预订”集合中，我有一个字段 "user"。它与"users._id" 相关。

我有一个预订列表页面。在此列表页面中显示了来自“预订”和“用户”的数据。

在这个列表页面中，我有一个文本框可以搜索invoice_number, payment_type, txid and usrEmail。我已经写了查询来搜索invoice_number, payment_type, txid，它正在工作，但我被困在usrEmail 部分。如何与users结合并编写搜索查询来搜索usrEmail？

我正在使用 laravel 和 mongodb。我在关注“https://github.com/jenssegers/laravel-mongodb”

预订

_id, user, invoice_number, payment_type, txid

用户

_id, firstName, SecondName, usrEmail

搜索查询

$bookings = Booking::select('_id', 'invoice_number', 'temp_user_id', 'user', 'checkin_from', 'reserve_to', 'beds', 'dormitory', 'sleeps', 'status', 'payment_status', 'payment_type', 'total_prepayment_amount', 'cabinname', 'reference_no', 'clubmember', 'bookingdate', 'txid')
                ->where('is_delete', 0)
                ->where(function($query) use ($search) { /* That's the closure */
                    $query->where('invoice_number', 'like', "%{$search}%")
                        ->orWhere('payment_type', 'like', "%{$search}%")
                        ->orWhere('txid', 'like', "%{$search}%");
                })
                ->skip($start)
                ->take($limit)
                ->orderBy($order, $dir)
                ->get();

应用\预订

public function user()
    {
        return $this->hasOne('App\Userlist', 'user', '_id');
    }

两个集合的图像 用户 预订

用户收藏

{ "_id" : ObjectId("57877d23049ac1b819000029"), "usrName" : "adminuser", "usrPassword" : "96a65063135247fef732b5901fe05d1f", "usrFirstname" : "Sarath", "usrLastname" : "TS", "usrTelephone" : null, "usrEmail" : "sara@gmail.com", "usrMobile" : "956209959", "usrAddress" : null, "usrFax" : "4564654", "usrZip" : null, "usrBirthday" : null, "usrDAV" : "316148-DAV-Deutscher Alpenverein", "usrActive" : "1", "usrlId" : "1", "lngId" : "1", "usrPasswordSalt" : ";:?hJM\"9=z/)ea?{%-[**:]68UOT>{gj^{P0+RCF#,Id8c:n+h", "usrRegistrationDate" : ISODate("2016-07-14T11:53:07Z"), "usrRegistrationToken" : "2c2e296bda1661c7fc0645f927d0b17f", "is_delete" : "0", "usrUpdateDate" : ISODate("2017-05-16T09:12:07Z"), "usrPasswordDate" : ISODate("2016-10-25T07:35:57Z"), "usrCity" : null, "usrNewsletter" : null, "money_balance" : "0", "usrCountry" : "Deutschland" }

预订集合

{ "_id" : ObjectId("58046a49f8f888a80b00002a"), "cabinname" : "Matras-Haus", "checkin_from" : ISODate("2016-10-17T00:00:00Z"), "reserve_to" : ISODate("2016-10-20T00:00:00Z"), "user" : "57877d23049ac1b819000029", "beds" : "2", "dormitory" : "1", "sleeps" : "3", "clubmember" : "1", "status" : "4", "comments" : "", "bookingdate" : ISODate("2016-10-17T06:06:01Z"), "reservation_cancel" : "2", "is_delete" : NumberLong(1), "payment_status" : "1" }
{ "_id" : ObjectId("58183678d2ae67a404431d5c"), "cabinname" : "Kemptner Hütte", "checkin_from" : ISODate("2016-10-31T23:00:00Z"), "reserve_to" : ISODate("2016-11-23T23:00:00Z"), "user" : "57877d23049ac1b819000029", "beds" : "2", "dormitory" : "0", "sleeps" : "2", "clubmember" : "0", "status" : "1", "total_price" : "1288", "payon_cabin" : "1288", "bed_prefer" : "0", "guests" : "2", "comments" : "", "prepayment_amount" : "0", "bookingdate" : ISODate("2016-11-01T06:30:16Z"), "reservation_cancel" : "2", "is_delete" : NumberLong(1), "payment_status" : "0" }
{ "_id" : ObjectId("581b31f3d2ae674d5f431d5b"), "cabinname" : "Kemptner Hütte", "checkin_from" : ISODate("2016-11-07T23:00:00Z"), "reserve_to" : ISODate("2016-11-17T23:00:00Z"), "user" : "57877d23049ac1b819000029", "beds" : "3", "dormitory" : "0", "sleeps" : "3", "clubmember" : "0", "status" : "1", "total_price" : "840", "payon_cabin" : "840", "bed_prefer" : "0", "guests" : "3", "comments" : "", "prepayment_amount" : "0", "bookingdate" : ISODate("2016-11-03T12:47:47Z"), "reservation_cancel" : "2", "is_delete" : NumberLong(1) }
{ "_id" : ObjectId("5821af65d2ae67c82154efc5"), "cabinname" : "Kemptner Hütte", "checkin_from" : ISODate("2017-09-05T22:00:00Z"), "reserve_to" : ISODate("2018-01-24T23:00:00Z"), "user" : "57877d23049ac1b819000029", "sleeps" : "2", "clubmember" : "0", "status" : "1", "total_price" : "5640", "payon_cabin" : "5630", "bed_prefer" : "0", "guests" : "2", "comments" : "", "prepayment_amount" : "21.25", "bookingdate" : ISODate("2016-11-08T10:56:37Z"), "reservation_cancel" : "2", "is_delete" : NumberLong(1) }
{ "_id" : ObjectId("582558d4d2ae679c4d8b4567"), "cabinname" : "2", "checkin_from" : ISODate("2017-07-31T22:00:00Z"), "reserve_to" : ISODate("2017-08-02T22:00:00Z"), "user" : "57877d23049ac1b819000029", "beds" : "", "dormitory" : "", "sleeps" : "2", "clubmember" : "0", "status" : "", "total_price" : "80", "payon_cabin" : "60", "halfboard" : "", "bed_prefer" : "0", "guests" : "2", "prepayment_amount" : "20", "bookingdate" : ISODate("2016-11-11T05:36:20Z"), "is_delete" : NumberLong(1) }
{ "_id" : ObjectId("58352c3cd2ae672341ec89e1"), "cabinname" : "Kemptner Hütte", "checkin_from" : ISODate("2017-05-31T22:00:00Z"), "reserve_to" : ISODate("2017-06-02T22:00:00Z"), "user" : "57877d23049ac1b819000029", "beds" : "", "dormitory" : "", "sleeps" : "2", "clubmember" : "0", "status" : "", "total_price" : "80", "payon_cabin" : "60", "halfboard" : "", "bed_prefer" : "0", "guests" : "2", "prepayment_amount" : "20", "bookingdate" : ISODate("2016-11-23T05:42:20Z"), "reservation_cancel" : "2", "is_delete" : NumberLong(1) }

Answer 1

您可以使用aggregate() 进行raw 查询，该查询可以使用$lookup 运算符在此处实现“加入”：

  $result = Booking::raw(function($collection) use($search, $start, $limit) {
     return $collection->aggregate(array(
       array( '$lookup' => array(
         'from' => 'users',
         'localField' => 'user',
         'foreignField' => '_id',
         'as' => 'user'
       )),
       array( '$unwind' => array( 
         'path' => '$user', 'preserveNullAndEmptyArrays' => True
       )),
       array( '$match' => array(
         '$or' => array(
           array( 'invoice_number' => array( '$regex' => $search ) ),
           array( 'payment_type' => array( '$regex' => $search ) ),
           array( 'txid' => array( '$regex' => $search ) ),
           array( 'user.usrEmail' => array( '$regex' => $search ) )
         )
       )),
       array( '$skip' => $start ),
       array( '$limit' => $limit )
     ));
  });

$lookup 将为目标字段返回一个“数组”，其中包含“无”或更多与提供的'localField' 值匹配的条目，其中该值可以是单数或值数组。通常我们在这里使用ObjectId，尤其是当链接到'foreignField' 为_id 时。

这比任何可以在客户端完成的操作都要好，因为任何其他操作都需要针对每个集合源对数据库进行多次查询。 $lookup 在单个请求和响应中执行此操作。

唯一真正需要注意的是，由于它与 ORM/ODM “分离”，因此您需要指定实际的“集合名称”，而不是类或模型的名称。所以我在这里只是假设"users"，但您可能需要将其调整为您的Users 集合的实际调用。

无论如何，在您拥有“已加入”数据后，您可以在已加入数据中的 "usrEmail" 属性上 $match，并将其包含在您的查询中。

至于实际查询，由于您基本上是对来自两个集合的数据执行$or 条件，因此在执行连接“之后”之前，我们无法真正做到$match。

当然还有$skip 和$limit 的聚合阶段用于您的分页。