Firebase Query Chaining?

Question

How would a Query, where I want to check if a Person Already Created a (not Running)Game look like?
I know how to make a simple Query, but it isn't possible to chain Query's right?

const-ID = "some id"

if(creator.displayName == const-ID && state == 1) return true
else return false

cutiko · Accepted Answer · 2017-07-11 12:05:55Z

2

You dont need to nest the creator inside the game, instead displayName and uid should be direct childs of the game.

Then you still have the problem because you want 2 search criteria. Sadly you cant do that in Firebase, yet. But what you can do is to generate another node inside the game called "state_uid". And then, query like child("games").orderByChild("state_uid").equalsTo("1_"+uid);

Look at this Firebase video https://youtu.be/sKFLI5FOOHs

answered Jul 11, 2017 at 12:05

cutiko

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4 Comments

Vor Name Over a year ago

hello, i already safed the whole playlist hehe<br> after watching this video from an google dev. <br> youtube.com/watch?v=8wF-mKMsynE <br> i nested the information just like he did, but will change that soon thanks!

Vor Name Over a year ago

if i do soemthing like this: pastebin.com/raw/mT9v76Lf its printing 1 and 2 and the function isnt working what am i doing wrong?

cutiko Over a year ago

Well, you the nesting rule is, nest as less as you can and don't transfer unnecesary data, in this case it could be acceptable.

cutiko Over a year ago

There is nothing wrong with the query. The once method is a promise therefore it will resolve asynchronously. That mean any code below will also be executed since the promise is being processed in "paralel".

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