Flutter-PlatformException:错误,无效的文档参考.文档引用的段数必须为偶数,但用户的段数为1,则为null [英] Flutter - PlatformException : error, Invalid document reference. Document references must have an even number of segments, but users has 1, null
本文介绍了Flutter-PlatformException:错误,无效的文档参考.文档引用的段数必须为偶数,但用户的段数为1,则为null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
我想从Cloud Firestore获取用户数据.它首先起作用,但现在却引发了错误.
I wanted to get my users data from cloud firestore. It worked first but now it is raising a error.
"PlatformException(PlatformException(错误,无效的文档引用.文档引用必须具有偶数个段,但用户具有1,空值))"
"PlatformException (PlatformException(error, Invalid document reference. Document references must have an even number of segments, but users has 1, null))"
String name = "", email = "", pnumber = "", imgUrl = "", bio = "", posted = "", applied = "", rating = "", saved = "";
String url;
final formKey = new GlobalKey<FormState>();
final databaseReference = Firestore.instance;
String uID;
@override
void initState() {
super.initState();
uID = widget.uID;
print("UID " + uID);
getUser();
}
void getUser() {
try {
databaseReference
.collection('users')
.document(uID)
.get()
.then((DocumentSnapshot ds){
if (ds.exists) {
name = ds.data['fullname'].toString();
print(name);
email = ds.data['email'].toString();
print(email);
pnumber = ds.data['pnumber'].toString();
print(pnumber);
imgUrl = ds.data['imgUrl'].toString();
print(imgUrl);
bio = ds.data['bio'].toString();
print(bio);
posted = ds.data['posted'].toString();
print(posted);
applied = ds.data['applied'].toString();
print(applied);
rating = ds.data['rating'].toString();
print(rating);
saved = ds.data['saved'].toString();
print(saved);
print(ds.data['fullname'].toString());
} else {
print("No such user");
}
});
} catch (e) {
print(e.toString());
}
}
推荐答案
这几乎可以肯定是因为 uID
是一个空字符串.在传递给Firestore之前先进行检查.
This is almost certainly because uID
is an empty string. Check it before passing to Firestore.
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