Firebase:用户。字符串的photoUrl

我试图将所有用户的个人资料照片存储在实时数据库中,但我遇到了一个问题。

当尝试上载带有此代码的PhotoUrl时,会出现此错误。

代码:

var user = firebase.auth().currentUser;

user.updateProfile({

  // Here, "name" and "imgUrl" are parameters of parent function.
  // I don't think this is the reason, but if it helps,
  // "imgUrl" always come from a <img> src.
  displayName: name,
  photoUrl: imgUrl

}).then(function(){

  // Here is where I try to upload all to the database
  firebase.database().ref("/Usuarios/" + user.uid).set({
    "email": email,
    "name": name,
    "photoUri": user.photoUrl, // This is where I think the problem originates.
    "uid": user.uid  // This calls user again, and it works perfectly.
  });

});

Uncaught Error: Firebase.set failed: First argument contains undefined in property 'Usuarios.kD1tD1NAmsaGiW0zj6lFz9GDWro1.photoUri'.

当我这么做的时候 警报(user.photoUrl)

我首先想到的是它不能保存在数据库中,因为它不是一个字符串,所以我尝试从中调用toString(),但我做不到。

toString()错误:

Uncaught TypeError: Cannot read property 'toString' of undefined

提前谢谢。