Ich habe 2 Sammlung ServiceProvider
und Parents
Serviceprovider:
{
"_id" : ObjectId("57285bc0588aeca4178b4567"),
"ServiceProviderID" : 193,
"Title" : "test1",
"PostedMessage" : "test1",
"TotalComments" : 0,
"TotalShares" : 0,
"TotalThanks" : 0,
"AddedOn" : "2016-05-03 08:05:20",
"LastModifiedOn" : "2016-05-03 08:05:20",
"PostAttachment" : {
"ImagePath" : ""
},
"PostCommentUserIDs" : [
"193",
"3"
],
"PostComments" : [
{
"ID" : "14622628001303558386",
"UserID" : 3,
"CommentMessage" : "comment by test",
"TotalThanks" : 0,
"AddedOn" : "2016-05-03 08:06:40",
"LastModifiedOn" : "2016-05-03 08:06:40",
"CommentAttachment" : {
"ImagePath" : ""
}
}
],
"Subscriber" : [
"193",
"3"
]
}
Eltern:
{
"_id" : ObjectId("572447e6588aec32108b4567"),
"ID" : "1",
"UID" : "2uwWMABSjBPWdAlSnglAlsY7A1cD1Q7EmHiM9wehxXyY99AQs6eC7rEt",
"Name" : "test1",
"ProfileImagePath" : "Penguins_1#SIZE#.jpg"
}
{
"_id" : ObjectId("572447e6588aec32108b4568"),
"ID" : "2",
"UID" : "NM8H6oYQW33dRPxn48wkcMYyciYqagRiXUO0cLh0Lvws6eC7rEt",
"Name" : "test2",
"ProfileImagePath" : "fb_profilepic_879157302148180#SIZE#.jpg"
}
{
"_id" : ObjectId("572447e6588aec32108b4569"),
"ID" : "3",
"UID" : "0Xb1fHqzR3HZVJWQc8aAbB77UkwSnmasdQrtp9qySVdqipsYs6eC7rEt",
"Name" : "test3",
"ProfileImagePath" : "images3_3_1460348144#SIZE#.jpeg"
}
{
"_id" : ObjectId("572447e6588aec32108b456a"),
"ID" : "4",
"UID" : "xXyY99NaNixXyY99IfuJx4Is8Fv15t9lMC8RYpSgaAbB77zmB65c7vccvYs6eC7rEt",
"Name" : "test4",
"ProfileImagePath" : "Jyoti_4#SIZE#.png"
}
{
"_id" : ObjectId("572447e6588aec32108b456b"),
"ID" : "5",
"UID" : "leyerH3hMY8UA3ONddJHDOHxXyY99IhhOgAImLZoQJ10RRxXyY99Us6eC7rEt",
"Name" : "test8",
"ProfileImagePath" : "woman-1_5#SIZE#.jpg"
}
{
"_id" : ObjectId("572447e6588aec32108b456c"),
"ID" : "6",
"UID" : "B414HAxXyY996QezhAmWgJQmjoWUEhsNghXAcKRTEbNNHJXYs6eC7rEt",
"Name" : "test5",
"ProfileImagePath" : "Chrysanthemum_6#SIZE#.jpg"
}
ich ServiceProvider.PostCommentUserIDs
anschließen möchten, mit Parents
Sammlung, um die Elterninformationen zu erhalten rmation.
Ich habe folgende Abfrage versucht:
db.ServiceProvider.aggregate([
{
$unwind: "$PostCommentUserIDs"
},
{
$lookup:
{
from: "Parents",
localField: "PostCommentUserIDs",
foreignField: "ID",
as: "ParentDetailsArr"
}
},
{
$match: { "ParentDetailsArr": { $ne: [] }}
}
])
Aber es gibt mir 2 Ergebnisse mit der gleichen ServiceProvider._id
d.h gleichen Dokument.
{
"_id" : ObjectId("57285bc0588aeca4178b4567"),
"ServiceProviderID" : 193,
"Title" : "test1",
"PostedMessage" : "test1",
"TotalComments" : 0,
"TotalShares" : 0,
"TotalThanks" : 0,
"AddedOn" : "2016-05-03 08:05:20",
"LastModifiedOn" : "2016-05-03 08:05:20",
"PostAttachment" : {
"ImagePath" : ""
},
"PostCommentUserIDs" : "193",
"PostComments" : [
{
"ID" : "14622628001303558386",
"UserID" : 3,
"CommentMessage" : "comment by test",
"TotalThanks" : 0,
"AddedOn" : "2016-05-03 08:06:40",
"LastModifiedOn" : "2016-05-03 08:06:40",
"CommentAttachment" : {
"ImagePath" : ""
}
}
],
"Subscriber" : [
"193",
"3"
],
"ParentDetailsArr" : [
{
"_id" : ObjectId("572447e6588aec32108b45c6"),
"ID" : "193",
"UID" : "tvzRNsSiOVca8DoOEV9tMkzU4e0Rx4aMMDcQw3fb88Us6eC7rEt",
"Name" : "test1",
"ProfileImagePath" : null
},
{
"_id" : ObjectId("572856a4588aec01178b45c6"),
"ID" : "193",
"UID" : "tvzRNsSiOVca8DoOEV9tMkzU4e0Rx4aMMDcQw3fb88Us6eC7rEt",
"Name" : "test1",
"ProfileImagePath" : "images_193_1462255293#SIZE#.jpg"
}
]
}
{
"_id" : ObjectId("57285bc0588aeca4178b4567"),
"ServiceProviderID" : 193,
"Title" : "test1",
"PostedMessage" : "test1",
"TotalComments" : 0,
"TotalShares" : 0,
"TotalThanks" : 0,
"AddedOn" : "2016-05-03 08:05:20",
"LastModifiedOn" : "2016-05-03 08:05:20",
"PostAttachment" : {
"ImagePath" : ""
},
"PostCommentUserIDs" : "3",
"PostComments" : [
{
"ID" : "14622628001303558386",
"UserID" : 3,
"CommentMessage" : "comment by test",
"TotalThanks" : 0,
"AddedOn" : "2016-05-03 08:06:40",
"LastModifiedOn" : "2016-05-03 08:06:40",
"CommentAttachment" : {
"ImagePath" : ""
}
}
],
"Subscriber" : [
"193",
"3"
],
"ParentDetailsArr" : [
{
"_id" : ObjectId("572447e6588aec32108b4569"),
"ID" : "3",
"UID" : "0Xb1fHqzR3HZVJWQc8aAbB77UkwSnmasdQrtp9qySVdqipsYs6eC7rEt",
"Name" : "test2",
"ProfileImagePath" : "images3_3_1460348144#SIZE#.jpeg"
},
{
"_id" : ObjectId("572856a4588aec01178b4569"),
"ID" : "3",
"UID" : "0Xb1fHqzR3HZVJWQc8aAbB77UkwSnmasdQrtp9qySVdqipsYs6eC7rEt",
"Name" : "test2",
"ProfileImagePath" : "images3_3_1460348144#SIZE#.jpeg"
}
]
}
Meine Frage ist, wie Gruppe anzuwenden, indem _id
oder wie die obige Abfrage zu rekonstruieren, so dass ich die übergeordnete Info-Array mit jedem Dokument erhalten.
sind Sie sicher, dass es nur einen Eintrag für Benutzer 193? – profesor79
Ja, es gibt nur 1 Eintrag mit ID 193 in der Eltern-Sammlung – Chinmay
Ich denke, weil ich 2 Einträge für PostCommentUserIDs habe, gibt es mir 2 verschiedene Ergebnisse. Hast du eine Idee, wie man eine Gruppe mit _id durchführt? Ich versuchte, aber kämpfen, um es Arbeit zu bekommen – Chinmay