我试图了解如何删除快照中的节点。我看过其他示例，但删除后未找到任何内容。
这就是JSON的样子
{
"series": {
"audit": null,
"contacts": null,
"images": null,
"products": {
"-LQgKSWzEtN9eVHcVLzV": {
"dataEntryDevice": "FIGGG",
"dataEntryDeviceVersion": "1.0",
"dateTimeUploaded": "2018-11-06T20:02:20-08:00",
"marketId": 19,
"metrostudyMarketId": "D245B426-102C-4678-BED2-BB9FB35764BD",
"products": [
{
"auditDate": "11/06/2018",
"bathrooms": "",
"bedrooms": "",
"bestSeller": false,
"garage": "",
"id": "",
"model": false,
"name": "",
"newProduct": false,
"notAvailable": false,
"price": 0,
"stories": "",
"unitsReleased": 0,
"unitsSold": 0
},
{
"auditDate": "11/06/2018",
"bathrooms": "2.5",
"bedrooms": "3",
"bestSeller": false,
"garage": "",
"id": "AFF1EE66-578C-4DA0-90A2-B9F447EA52B6",
"model": false,
"name": "Plan 2",
"newProduct": true,
"notAvailable": true,
"price": 0,
"stories": 2,
"unitsReleased": 4,
"unitsSold": 4
},
{
"auditDate": "11/06/2018",
"bathrooms": "3",
"bedrooms": "3",
"bestSeller": false,
"garage": "",
"id": "0059ED00-102C-48D9-95E0-E68A04D2E877",
"model": false,
"name": "Plan 5",
"newProduct": true,
"notAvailable": true,
"price": 0,
"stories": 2,
"unitsReleased": 3,
"unitsSold": 3
},
{
"auditDate": "11/06/2018",
"bathrooms": "4",
"bedrooms": "5",
"bestSeller": false,
"garage": "",
"id": "08CEF557-EDF7-46E7-AC9B-A380E2046616",
"model": false,
"name": "Plan 6",
"newProduct": true,
"notAvailable": true,
"price": 0,
"stories": 2,
"unitsReleased": 2,
"unitsSold": 2
}
],
"seriesId": "5571E356-AEE5-443A-AC45-47661EB99096",
"userId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26"
},
"Optional(\"-LQgHPWQ1KKElA8zWIKv\")": {
"auditorUserId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"dataEntryDevice": "iPad",
"dataEntryDeviceVersion": "0.9906",
"dateTimeUploaded": "2018-11-06T19:49:02",
"marketId": "19",
"metrostudyMarketId": "D245B426-102C-4678-BED2-BB9FB35764BD",
"products": [
{
"auditDate": "2018-11-06T19:49:02",
"bathrooms": "2.5",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 1796,
"garagesNumber": "2",
"id": "AFF1EE66-578C-4DA0-90A2-B9F447EA52B6",
"model": false,
"name": "Plan 2",
"newProduct": true,
"notAvailable": false,
"stories": 2
}
],
"seriesId": "5571E356-AEE5-443A-AC45-47661EB99096",
"userId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"userName": "Lkolokousis@metrostudy.com"
},
"Optional(\"-LQgHY12QubrBiwU0Uw7\")": {
"auditorUserId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"dataEntryDevice": "iPad",
"dataEntryDeviceVersion": "0.9906",
"dateTimeUploaded": "2018-11-06T19:49:36",
"marketId": "19",
"metrostudyMarketId": "D245B426-102C-4678-BED2-BB9FB35764BD",
"products": [
{
"auditDate": "2018-11-06T19:49:02",
"bathrooms": "2.5",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 1796,
"garagesNumber": "2",
"id": "AFF1EE66-578C-4DA0-90A2-B9F447EA52B6",
"model": false,
"name": "Plan 2",
"newProduct": true,
"notAvailable": false,
"stories": 2
},
{
"auditDate": "2018-11-06T19:49:36",
"bathrooms": "3",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 2438,
"garagesNumber": "2",
"id": "0059ED00-102C-48D9-95E0-E68A04D2E877",
"model": false,
"name": "Plan 5",
"newProduct": true,
"notAvailable": false,
"stories": 2
}
],
"seriesId": "5571E356-AEE5-443A-AC45-47661EB99096",
"userId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"userName": "Lkolokousis@metrostudy.com"
},
"Optional(\"-LQgHeGVu075fgcbBWP7\")": {
"auditorUserId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"dataEntryDevice": "iPad",
"dataEntryDeviceVersion": "0.9906",
"dateTimeUploaded": "2018-11-06T19:50:06",
"marketId": "19",
"metrostudyMarketId": "D245B426-102C-4678-BED2-BB9FB35764BD",
"products": [
{
"auditDate": "2018-11-06T19:49:02",
"bathrooms": "2.5",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 1796,
"garagesNumber": "2",
"id": "AFF1EE66-578C-4DA0-90A2-B9F447EA52B6",
"model": false,
"name": "Plan 2",
"newProduct": true,
"notAvailable": false,
"stories": 2
},
{
"auditDate": "2018-11-06T19:49:36",
"bathrooms": "3",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 2438,
"garagesNumber": "2",
"id": "0059ED00-102C-48D9-95E0-E68A04D2E877",
"model": false,
"name": "Plan 5",
"newProduct": true,
"notAvailable": false,
"stories": 2
},
{
"auditDate": "2018-11-06T19:50:06",
"bathrooms": "4",
"bedrooms": "5",
"bestSeller": false,
"finishedSqFt": 2753,
"garagesNumber": "2",
"id": "08CEF557-EDF7-46E7-AC9B-A380E2046616",
"model": false,
"name": "Plan 6",
"newProduct": true,
"notAvailable": false,
"stories": 2
}
],
"seriesId": "5571E356-AEE5-443A-AC45-47661EB99096",
"userId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"userName": "Lkolokousis@metrostudy.com"
},
"Optional(\"-LQgHf1zpDDXs7m7KVNk\")": {
"auditorUserId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"dataEntryDevice": "iPad",
"dataEntryDeviceVersion": "0.9906",
"dateTimeUploaded": "2018-11-06T19:50:09",
"marketId": "19",
"metrostudyMarketId": "D245B426-102C-4678-BED2-BB9FB35764BD",
"products": [
{
"auditDate": "2018-11-06T19:50:09",
"bathrooms": "2.5",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 1796,
"garagesNumber": "2",
"id": "AFF1EE66-578C-4DA0-90A2-B9F447EA52B6",
"model": false,
"name": "Plan 2",
"newProduct": true,
"notAvailable": false,
"stories": 2
},
{
"auditDate": "2018-11-06T19:50:09",
"bathrooms": "3",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 2438,
"garagesNumber": "2",
"id": "0059ED00-102C-48D9-95E0-E68A04D2E877",
"model": false,
"name": "Plan 5",
"newProduct": true,
"notAvailable": false,
"stories": 2
},
{
"auditDate": "2018-11-06T19:50:09",
"bathrooms": "4",
"bedrooms": "5",
"bestSeller": false,
"finishedSqFt": 2753,
"garagesNumber": "2",
"id": "08CEF557-EDF7-46E7-AC9B-A380E2046616",
"model": false,
"name": "Plan 6",
"newProduct": true,
"notAvailable": false,
"stories": 2
}
],
"seriesId": "5571E356-AEE5-443A-AC45-47661EB99096",
"userId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"userName": "Lkolokousis@metrostudy.com"
},
"Optional(\"-LQgImKX4q5l9A-sTnuH\")": {
"auditorUserId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"dataEntryDevice": "iPad",
"dataEntryDeviceVersion": "0.9906",
"dateTimeUploaded": "2018-11-06T19:55:01",
"marketId": "19",
"metrostudyMarketId": "D245B426-102C-4678-BED2-BB9FB35764BD",
"products": [
{
"auditDate": "2018-11-06T19:55:01",
"bathrooms": "2.5",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 1796,
"garagesNumber": "2",
"id": "AFF1EE66-578C-4DA0-90A2-B9F447EA52B6",
"model": false,
"name": "Plan 2",
"newProduct": true,
"notAvailable": true,
"stories": 2
},
{
"auditDate": "2018-11-06T19:55:01",
"bathrooms": "3",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 2438,
"garagesNumber": "2",
"id": "0059ED00-102C-48D9-95E0-E68A04D2E877",
"model": false,
"name": "Plan 5",
"newProduct": true,
"notAvailable": true,
"stories": 2
},
{
"auditDate": "2018-11-06T19:55:01",
"bathrooms": "4",
"bedrooms": "5",
"bestSeller": false,
"finishedSqFt": 2753,
"garagesNumber": "2",
"id": "08CEF557-EDF7-46E7-AC9B-A380E2046616",
"model": false,
"name": "Plan 6",
"newProduct": true,
"notAvailable": true,
"stories": 2
}
],
"seriesId": "5571E356-AEE5-443A-AC45-47661EB99096",
"userId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"userName": "Lkolokousis@metrostudy.com"
},
"Optional(\"-LQgL7xI2ZcYLV6LLXCO\")": {
"auditorUserId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"dataEntryDevice": "iPad",
"dataEntryDeviceVersion": "0.9906",
"dateTimeUploaded": "2018-11-06T20:05:18",
"marketId": "19",
"metrostudyMarketId": "D245B426-102C-4678-BED2-BB9FB35764BD",
"products": [
{
"auditDate": "2018-11-06T20:05:18",
"bathrooms": "2.5",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 1796,
"garagesNumber": "2",
"id": "AFF1EE66-578C-4DA0-90A2-B9F447EA52B6",
"model": false,
"name": "Plan 2",
"newProduct": true,
"notAvailable": true,
"stories": 2,
"unitsReleased": 4,
"unitsRemaining": 0,
"unitsSold": 4
},
{
"auditDate": "2018-11-06T20:05:18",
"bathrooms": "3",
"bedrooms": "3",
"bestSeller": false,
"finishedSqFt": 2438,
"garagesNumber": "2",
"id": "0059ED00-102C-48D9-95E0-E68A04D2E877",
"model": false,
"name": "Plan 5",
"newProduct": true,
"notAvailable": true,
"stories": 2,
"unitsReleased": 3,
"unitsRemaining": 0,
"unitsSold": 3
},
{
"auditDate": "2018-11-06T20:05:18",
"bathrooms": "4",
"bedrooms": "5",
"bestSeller": false,
"finishedSqFt": 2753,
"garagesNumber": "2",
"id": "08CEF557-EDF7-46E7-AC9B-A380E2046616",
"model": false,
"name": "Plan 6",
"newProduct": true,
"notAvailable": true,
"stories": 2,
"unitsReleased": 2,
"unitsRemaining": 0,
"unitsSold": 2
}
],
"seriesId": "5571E356-AEE5-443A-AC45-47661EB99096",
"userId": "395a2c10-6d7e-41d9-92cd-0704caf5eb26",
"userName": "Lkolokousis@metrostudy.com"
}
}
},
"subdivision": null,
"contact": null,
"salescenter": null
}
我需要遍历嵌套产品数组并删除具有空ID的任何元素。我尝试了一些不同的方法，但是找不到解决方案。这是我尝试过的最后一次。
_seriesMaster.forEach((child) => {
if (child.key === 'products') {
child.forEach(x => {
x.val().products.forEach((p, i) => {
if (!p.id) {
x.val().products[i].remove()
}
})
})
}
})
答案 0 :(得分：2)
您将其视为数组，因此首先对其进行过滤：
const productUID = x.key;
const path = 'series/products/' + productUID + '/products';
firebase.database().ref(path).set(filteredProducts)
，然后使用filteredProducts设置节点
_seriesMaster.forEach((child) => {
if (child.key === 'products') {
child.forEach(x => {
const productUID = x.key;
const filteredProducts = x.val().products.filter(p => !p.id)
const path = 'series/products/' + productUID + '/products';
firebase.database().ref(path).set(filteredProducts)
})
}
})
完整解决方案：
{{1}}