adding data to firebase realtime database from an object (web)

Question

I have an object containing multiple key value pairs, I want to add all the keys and their values, from inside the object to an existing node, without disturbing the data already present inside the node.

If i write like this

var ref = firebase.database().ref("hams/spam_words/");

    ref.update({   

       new_words_ham //new_word_ham is an object containing n number of words

    });

it will add new_words_ham as another child node inside the main node , i cannot have that

even using a forloop on the object does not work

var ref = firebase.database().ref("hams/spam_words/");
    for(var i in new_words_ham){
        var word = i
    ref.update({   
      i
    });

I am new to js as well as to firebase. Please do tell me if i have got any concept wrong

also can some one just tell me if i am using the terms node and child in the wrong sense here — Akash
– Akash, Commented Jan 3, 2019 at 6:56
This statement looks a bit strange ref.update({ new_words_ham }); Are the wrapping curly brackets a typo or is removing them solving your problem? — Dennis Alund
– Dennis Alund, Commented Jan 3, 2019 at 7:33
@DennisAlund modern JavaScript allows { new_words_ham } as a shorthand for { new_words_ham: new_words_ham } . Yes, I find it incredibly hard to get used to too. ;-) — Frank van Puffelen
– Frank van Puffelen, Commented Jan 3, 2019 at 14:45
Thanks for that, I learned something interesting from this 😊 — Dennis Alund
– Dennis Alund, Commented Jan 4, 2019 at 0:30

Sami Hult · Accepted Answer · 2019-01-03 07:33:38Z

1

Your existing code

//new_word_ham is an object containing n number of words
firebase.database().ref("hams/spam_words/").update({   
   new_words_ham 
});

Can be rewritten as

firebase.database().ref("hams/spam_words/").update({   
   new_words_ham: new_words_ham
});

when the shorthand syntax is expanded. What I believe you want is simply

firebase.database().ref("hams/spam_words/").update(new_words_ham);

answered Jan 3, 2019 at 7:33

Sami Hult

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