node.js - Firestore For Loop Batch.Set 仅创建最后一个值文档
问题描述
这是用于创建事件和公共事件的 http firebase 函数。我对 for 循环有问题，只创建了一个文档。基本上我在创建活动奖品文件时遇到问题。正如您在图片中看到的，仅创建了最后一个 for 循环文档。prizeData[0].amount指应创建多少次类型一等奖的奖品。prizeData[1], prizeData[2], prizeData[3]指奖品类型二等奖、三等奖和安慰奖。我尝试了其他版本的 for 循环，但结果仍然相同。
问题的代码片段
let prizeRef = db.collection("events").doc(eventRef.id).collection("prizes").doc();
for(let i=0; i<Number(prizeData[0].amount); i++){
console.log(prizeData[0].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[0].item,
type: prizeData[0].type,
redeem: false,
redeemTime: null
});
}
for(let j=0; j<Number(prizeData[1].amount); j++){
console.log(prizeData[1].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[1].item,
type: prizeData[1].type,
redeem: false,
redeemTime: null
});
}
for(let k=0; k<Number(prizeData[2].amount); k++){
console.log(prizeData[2].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[2].item,
type: prizeData[2].type,
redeem: false,
redeemTime: null
});
}
for(let l=0; l<Number(prizeData[3].amount); l++){
console.log(prizeData[3].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[3].item,
type: prizeData[3].type,
redeem: false,
redeemTime: null
});
}
整体创造功能
exports.create = async function (req, res){
let userID;
let userData;
let shopData;
let eventData = req.body;
let prizeData = eventData.prizes;
let batch = db.batch();
let token = req.headers.authorization.split('Bearer')[1];
let eventRef = db.collection("events").doc();
await admin.auth().verifyIdToken(token).then( decodedToken => {
userID = decodedToken.uid;
return userID;
}).catch(err => {
console.log(err)
return res.status(500).json({
"status" : "Failure",
"action" : "Create event",
"message" : "Authentication token invalid / Unable to retrieve authentication token"
})
});
await db.collection("users").doc(userID).get().then( doc => {
userData = doc.data();
return userData;
}).catch(err => {
console.log(err)
return res.status(500).json({
"status" : "Failure",
"action" : "Create event",
"message" : "User information not found"
})
});
if (eventData.organizer === "decodelab"){
await db.collection("decodelab").doc("profile").get().then( doc => {
shopData = doc.data();
return shopData;
}).catch(err => {
console.log(err)
return res.status(500).json({
"status" : "Failure",
"action" : "Create event",
"message" : "DecodeLab information not found"
})
});
} else {
await db.collection("shops").doc(userData.shopID).get().then( doc => {
shopData = doc.data();
return shopData;
}).catch(err => {
console.log(err)
return res.status(500).json({
"status" : "Failure",
"action" : "Create event",
"message" : "Shop information not found"
})
});
}
if (userData.role !== "2skk7Y5JQSR2rPtVMtWk" && userData.shopID === eventData.shopID){
if (eventData.startDate < eventData.endDate && eventData.announcementDate > eventData.endDate){
batch.set(eventRef, {
key: eventRef.id ? eventRef.id : '',
title: eventData.title ? eventData.title : '',
coverPic: eventData.coverPic ? eventData.coverPic : '',
createAt: admin.firestore.Timestamp.now(),
created: {
by: userData.uid ? userData.uid : '',
time: admin.firestore.Timestamp.now(),
},
deleted_at: null,
description: eventData.description ? eventData.description : '',
shortDescription: eventData.shortDescription ? eventData.shortDescription : '',
points: eventData.points ? Number(eventData.points) : 0,
endDate: eventData.endDate ? new Date(eventData.endDate) : new Date.now(),
announcementDate: eventData.announcementDate ? new Date(eventData.announcementDate) : new Date.now(),
numOfTickets: 0,
numOfParticipants:0,
logo: shopData.logo ? shopData.logo : '',//shop
displayName: shopData.displayName ? shopData.displayName : '',//shop
name: shopData.name ? shopData.name : '',//shop
phone: shopData.phone ? shopData.phone : '',//shop
address: shopData.address ? shopData.address
: { country:'',
line1:'',
line2:'',
postcode:'',
states:''
},
shopID: eventData.shopID ? eventData.shopID : '',
startDate: eventData.startDate ? new Date(eventData.startDate) : new Date.now(),
subImage: eventData.subImage ? eventData.subImage : ['','','',''],
termAndCon: eventData.termAndCon ? eventData.termAndCon : '',
prizes: eventData.prizes ? [{
amount: Number(prizeData[0].amount),
item: prizeData[0].item,
type: prizeData[0].type,
},{
amount: Number(prizeData[1].amount),
item: prizeData[1].item,
type: prizeData[1].type,
},{
amount: Number(prizeData[2].amount),
item: prizeData[2].item,
type: prizeData[2].type,
},{
amount: Number(prizeData[3].amount),
item: prizeData[3].item,
type: prizeData[3].type,
}
]
: [{
amount: 0,
item: "",
type: "1stPrize",
},
{
amount: 0,
item: "",
type: "2ndPrize",
},
{
amount: 0,
item: "",
type: "3rdPrize",
},
{
amount: 0,
item: "",
type: "Consolation Prize",
},
],
organizer: eventData.organizer ? eventData.organizer : '',
numJoined: eventData.numJoined ? eventData.numJoined : 0,
redeemProcedure: eventData.redeemProcedure ? eventData.redeemProcedure : ''
});
let publicEventRef = db.collection("publicEvent").doc(eventRef.id);
let prizeRef = db.collection("events").doc(eventRef.id).collection("prizes").doc();
for(let i=0; i<Number(prizeData[0].amount); i++){
console.log(prizeData[0].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[0].item,
type: prizeData[0].type,
redeem: false,
redeemTime: null
});
}
for(let j=0; j<Number(prizeData[1].amount); j++){
console.log(prizeData[1].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[1].item,
type: prizeData[1].type,
redeem: false,
redeemTime: null
});
}
for(let k=0; k<Number(prizeData[2].amount); k++){
console.log(prizeData[2].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[2].item,
type: prizeData[2].type,
redeem: false,
redeemTime: null
});
}
for(let l=0; l<Number(prizeData[3].amount); l++){
console.log(prizeData[3].amount);
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[3].item,
type: prizeData[3].type,
redeem: false,
redeemTime: null
});
}
batch.set(publicEventRef, {
title: eventData.title ? eventData.title : '',
coverPic: eventData.coverPic ? eventData.coverPic : '',
createAt: admin.firestore.Timestamp.now(),
created: {
by: userData.uid ? userData.uid : '',
time: admin.firestore.Timestamp.now(),
},
deleted_at: null,
description: eventData.description ? eventData.description : '',
shortDescription: eventData.shortDescription ? eventData.shortDescription : '',
points: eventData.points ? eventData.points : 0,
endDate: eventData.endDate ? new Date(eventData.endDate) : new Date.now(),
announcementDate: eventData.announcementDate ? new Date(eventData.announcementDate) : new Date.now(),
numOfTickets: 0,
numOfParticipants:0,
logo: shopData.logo ? shopData.logo : '',//shop
displayName: shopData.displayName ? shopData.displayName : '',//shop
name: shopData.name ? shopData.name : '',//shop
phone: shopData.phone ? shopData.phone : '',//shop
address: shopData.address ? shopData.address : {
country:'',
line1:'',
line2:'',
postcode:'',
states:''
}, //shop
shopID: eventData.shopID ? eventData.shopID : '',
startDate: eventData.startDate ? new Date(eventData.startDate) : new Date.now(),
subImage: eventData.subImage ? eventData.subImage : ['','','',''],
termAndCon: eventData.termAndCon ? eventData.termAndCon : '',
prizes: eventData.prizes ? eventData.prizes : [{
amount: 0,
item: "",
redeem: false,
redeemTime: null,
type: "1st Prize",
winnerUID: ""
},
{
amount: 0,
item: "",
redeem: false,
redeemTime: null,
type: "2ndPrize",
winnerUID: ""
},
{
amount: 0,
item: "",
redeem: false,
redeemTime: null,
type: "3rdPrize",
winnerUID: ""
},
{
amount: 0,
item: "",
redeem: false,
redeemTime: null,
type: "Consolation Prize",
winnerUID: ""
},
],
organizer: eventData.organizer ? eventData.organizer : '',
numJoined: eventData.numJoined ? eventData.numJoined : 0,
redeemProcedure: eventData.redeemProcedure ? eventData.redeemProcedure : ''
});
batch.commit().then(() => {
console.log('Create event successfully');
return res.status(200).json({
"status" : "Success",
"action" : "Create event",
"message" : "Create event successfully"
});
}).catch(err => {
console.log(err);
return res.status(500).json({
"status" : "Failure",
"action" : "Create event",
"message" : "Failed to create event"
});
});
} else {
return res.status(500).json({
"status" : "Failure",
"action" : "Create event",
"message" : "START date must be earlier than END date / ANNOUNCEMENT date must be after END date"
});
}
} else {
return res.status(401).json({
"status" : "Failure",
"action" : "Create event",
"message" : "Unauthorized user access"
});
}
};
生成的文件总数仅为 1 份安慰奖。安慰奖金额为10。应该可以生成10个文档，但是只生成了1个文档。
解决方案
如果我正确理解您的代码，这是因为您在循环中重复使用相同的值，一次又一次地prizeRef覆盖文档。prizeRef
您应该在每次迭代中调用该doc()方法，如下所示，以生成一个新的DocumentReference：
let prizeRef;
for(let i=0; i<Number(prizeData[0].amount); i++){
console.log(prizeData[0].amount);
///Here, assign a new value to prizeRef, by calling the doc() method
prizeRef = db.collection("events").doc(eventRef.id).collection("prizes").doc();
batch.set(prizeRef, {
ticketID: "",
uid: "",
name: "",
item: prizeData[0].item,
type: prizeData[0].type,
redeem: false,
redeemTime: null
});
}
//Do the same for the other loops (j, k, l ones)
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