根据emailId匹配从Firebase数据库获取节点名称 [英] Getting node names from Firebase database based on emailId match
本文介绍了根据emailId匹配从Firebase数据库获取节点名称的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我具有以下Json模式,可以使用哪种firebase查询来获取节点名称(0153,0154),我可以使用一次方法来获取名称(joel,vikram,sachin)
I have the below Json schema , what firebase query can I use to get the node name(0153,0154) , I am able to get the name(joel,vikram,sachin) using once method
"EmployeeInfo":
{
"0153":
{
"Name":"Joel",
"Dept":"Engineering",
"Email":"joel@dept.com"
},
"0163":
{
"Name":"Vikram",
"Dept":"Engineering",
"Email":"vikram@dept.com"
},
"0173":
{
"Name":"Sachin",
"Dept":"Engineering",
"Email":"Sachin@dept.com"
}
这是我的JavaScript函数:
Here is my javascript function :
function Call() {
var dbref = new Firebase("https://logintrialapp.firebaseio.com/Employee/EmployeeInfo");
var login = localStorage.getItem("Email");
dbref
.once("value")
.then(function(snapshot) {
snapshot.forEach(function(childSnapshot) {
childData = childSnapshot.val();
name = childData.Name;
var n = login.localeCompare(name);
console.log(name);
if (n != 0) {
var eid = snapshot.val();
console.log("Hello" + eid);
}
console.log(snapshot.val());
})
})
使用此代码,我可以获取名称,但我想检索节点名称,可以使用什么查询基于emailid匹配条件获取节点名称
with this code I am able to get the names but I want to retrieve the node names , what query can be used to get the nodes names based on emailid match criteria
输出:
Joel
Checkworks.html:50 Hello[object Object]
Checkworks.html:55 Object {0153: Object, 0163: Object, 0173: Object}0153: ObjectDept: "Engineering"Email: "joel@dept.com"Name: "Joel"__proto__: Object0163: Object0173:
Object__proto__: Object
Checkworks.html:44 Vikram
Checkworks.html:50 Hello[object Object]
Checkworks.html:55 Object0153: ObjectDept: "Engineering"
Email: "joel@dept.com"Name: "Joel"__proto__: Object0163
: Object0173: ObjectDept: "Engineering"Email: "Sachin@dept.com"Name: "Sachin"__proto__: Object__proto__: Object
Checkworks.html:44 Sachin
Checkworks.html:50 Hello[object Object]
Checkworks.html:55 Object {0153: Object, 0163: Object, 0173: Object}
推荐答案
获取childSnapshot调用childSnapshot.key
的密钥:
To get the key of the childSnapshot call childSnapshot.key
:
.then(function(snapshot) {
snapshot.forEach(function(childSnapshot) {
childKey = childSnapshot.key; // Get the key of the child
childData = childSnapshot.val();
name = childData.Name;
var n = login.localeCompare(name);
console.log(name);
if (n != 0) {
var eid = snapshot.val();
console.log("Hello" + eid);
}
console.log(snapshot.val());
})
})
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