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TL;博士分析查詢由子/點符號
能ParseCloud/MongoDB的過濾器由
Pointer<class>.filed？通過Pointer<class>.Pointer<class>？是否存在該領域的數據？
長的問題：
Round是將自動播放時，時間會來的對象。
Payment指示用戶付款的對象。當支付正在使用時，我們將其設置爲round。
Player哪些鏈接在線User與Payment
我需要查詢球員爲幾個條件：
Player- 在線
- 具有有效（不
round和valid到 '有效'）payment
Playeruser等於特定用戶- 等於沒有
payment
Playeruser等於特定用戶- 具有有效（不
round和valid等於 '有效'）支付
而且我做了一切，除了驗證Payment內Player查詢工作。
這裏是條件從列表中。
var query = new Parse.Query(keys.Player);
query.skip(0);
query.limit(oneRoundMaxPlayers);
query.greaterThanOrEqualTo(keys.last_online_date, lastAllowedOnline);
// looks like no filter applied here
query.doesNotExist("payment.round");
query.exists(keys.payment);
// This line will make query return 0 elements
// query.equalTo("payment.valid", "valid");
query.include(keys.user);
query.include(keys.payment);
這裏是2或3
var queryPaymentExists = new Parse.Query(keys.Player);
queryPaymentExists.skip(0);
queryPaymentExists.limit(1);
queryPaymentExists.exists(keys.payment);
//This line not filtering
queryPaymentExists.doesNotExist(keys.payment + "." + keys.round);
queryPaymentExists.equalTo(keys.user, user);
// This line makes query always return 0 elements
// queryPaymentExists.equalTo(keys.payment + "." + keys.valid, keys.payment_valid);
var queryPaymentDoesNotExist = new Parse.Query(keys.Player);
queryPaymentDoesNotExist.skip(0);
queryPaymentDoesNotExist.limit(1);
queryPaymentDoesNotExist.doesNotExist(keys.payment);
queryPaymentDoesNotExist.equalTo(keys.user, user);
var compoundQuery = Parse.Query.or(queryPaymentExists, queryPaymentDoesNotExist);
compoundQuery.include(keys.user);
compoundQuery.include(keys.payment);
compoundQuery.include(keys.payment + "." + keys.round);
我從蒙戈檢查日誌和他們看起來以下
verbose: REQUEST for [GET] /classes/Player: {
"include": "user,payment,payment.round",
"where": {
"$or": [
{
"payment": {
"$exists": true
},
"payment.round": {
"$exists": false
},
"user": {
"__type": "Pointer",
"className": "_User",
"objectId": "ASPKs6UVwb"
}
},
{
"payment": {
"$exists": false
},
"user": {
"__type": "Pointer",
"className": "_User",
"objectId": "ASPKs6UVwb"
}
}
]
}
}
這是響應：
verbose: RESPONSE from [GET] /classes/Player: {
"response": {
"results": [
{
"objectId": "VHU9uwmLA7",
"last_online_date": {
"__type": "Date",
"iso": "2017-10-28T15:15:23.547Z"
},
"user": {
"objectId": "ASPKs6UVwb",
"username": "cn92Ekv5WPJcuHjkmTajmZMDW",
},
"createdAt": "2017-10-22T11:43:16.804Z",
"updatedAt": "2017-10-25T09:23:20.035Z",
"ACL": {
"*": {
"read": true
},
"ASPKs6UVwb": {
"read": true,
"write": true
}
},
"__type": "Object",
"className": "_User"
},
"createdAt": "2017-10-27T21:03:35.442Z",
"updatedAt": "2017-10-28T15:15:23.556Z",
"payment": {
"objectId": "nr7ln7U3eJ",
"payment_date": {
"__type": "Date",
"iso": "2017-10-27T23:42:50.614Z"
},
"user": {
"__type": "Pointer",
"className": "_User",
"objectId": "ASPKs6UVwb"
},
"createdAt": "2017-10-27T23:42:50.624Z",
"updatedAt": "2017-10-28T15:12:30.131Z",
"valid": "valid",
"round": {
"objectId": "jF9gqG4ndh",
"round_date": {
"__type": "Date",
"iso": "2017-10-28T15:12:00.027Z"
},
"createdAt": "2017-10-28T15:11:00.036Z",
"updatedAt": "2017-10-28T15:12:30.108Z",
,
"ACL": {
"*": {
"read": true
}
},
"__type": "Object",
"className": "Round"
},
"ACL": {
"ASPKs6UVwb": {
"read": true
}
},
"__type": "Object",
"className": "Payment"
},
"ACL": {
"ASPKs6UVwb": {
"read": true
}
}
}
]
}
}
您可以看到該回復包含payment.round。
我的問題是以下幾點：
- 可以通過
Pointer<class>.filedParseCloud/MongoDB的過濾器？由Pointer<class>.Pointer<class>？是否存在該領域的數據？ - 如何在我需要檢查現場存在的情況下解決問題，如果
User可以有可能Players，User可以有多個Payments。
UPD 至於我發現蒙戈應該由「點號」 mongodb query by sub-field 那我做錯了支持篩選？