Adding Firebase data, dots and forward slashes

Question

I try to use firebase db, I found very important restrictions, which are not described in firebase help or FAQ.

First problem is that symbol: dot \'.\' prohibited in

Answer 1

I don't see an "automatic" built in FireBase encoder for keys.

Here is a Java solution.

I built this, a simplified version of josue.0's answer, but I think it is better code since his version could cause problems. A lot of people will use _P or _D in their code, so it needs to be more complex and unlikely.

public static String encodeForFirebaseKey (String s) {
    s = s.replace(".", "_P%ë5nN*")
            .replace("$", "_D%5nNë*")
            .replace("#", "_H%ë5Nn*")
            .replace("[", "_Oë5n%N*")
            .replace("]", "_5nN*C%ë")
            .replace("/", "*_S%ë5nN")
    ;
    return s;
}

public static String decodeFromFirebaseKey(String s) {

    s = s.replace("_P%ë5nN*", ".")
            .replace("_D%5nNë*", "$")
            .replace("_H%ë5Nn*", "#")
            .replace("_Oë5n%N*", "[")
            .replace("_5nN*C%ë", "]")
            .replace("*_S%ë5nN", "/");

    return s; 

Answer 2

I got annoyed with this problem so I took the answer from @sushain97 (thanks!) and built a deep encoder/decoder.

https://www.npmjs.com/package/firebase-key-encode

Basic usage:

var firebaseKeyEncode = require('firebase-key-encode');
firebaseKeyEncode.encode('my.bad.key');
// Output: my%2Ebad%2Ekey

Deep Usage:

var firebaseKeyEncode = require('firebase-key-encode');

var badTree = {
    "pets": [
        {
            "jimmy.choo": 15}
        ],
    "other.key": 5
}

firebaseKeyEncode.deepEncode(badTree);

// Output: {
//    "pets": [
//        {
//            "jimmy%2Echoo": 15}
//        ],
//    "other%2Ekey": 5
// }

Answer 3

Personally, I found a simple and easy hack for this same problem I encountered

I took the dateTime string and convert it using replace('/','|')

the result will be something like this 2017|07|24 02:39:37 instead of 2017/07/24 02:39:37.