Read all firebase tags(son),(grandsoon)

[waldir_dias]

Hello everyone. I’m beginner on Kodular and I need help please. I need read all tag in Firebase table “alunos” that I don´t know how many will have for after this read the tag “data” of each than. Thank you everyone that will may help me.

[ImranTariq]

well for this you need 2 or more firebase components for easy method, first one will set project bucket as alunos and get tag list, and after got tag list , for each item in list, set forebase 2 project bucket to alunos/each item/dados and get tag list and whn firebase 2 get tag list , for each item in list, call get data with tag(get item) and when got data add get value to a list and your all data will be stored in to a list and you my need to use some tricks to divide or split data from that list.

[waldir_dias]

Hello my dear friend, thank you for your answer but I cant imagine how I do this. Seeing you answer I imagine is very dificult for a begginer, even having college and seven yars in this area. Do you have some project similar that I can see? If you dont I will change the structure of my data base to facilitate. Once again I say thank you.

[ImranTariq]

i will try to find or create blocks when i will be free.

[pepocero]

You can do it with only one firebase component.

I made a similar copy of your firebase data structure.

Then I used these blocks:

In tag 1 you get the values of 1

You have to change the value of the variable numerAluno, in the example I put the value 2 and get the values of 2. If I put the value 1 so I get all the values of 1

[pepocero]

The result is this

You get the values in a list on the label 1

Then with the list you can do whatever you want… put it in a listview or a label or whatever

[waldir_dias]

#pepocero
I don`t have words to say thank you for you spend of your time fo help me. I believe that this way that you showed me will work but I needed know how many “alunos” and how to get all because sometimes will have: 1, 2, 4, 7…this is code of student(aluno). I will try learn the programming lenguage Kotlin for do this. Again I say thank you.

[pepocero]

In Firebase, inside “alunos” you keep only numbers? 1,2,3,4,5,6,7,8,9… ?
Or do you also save any other data?

[pepocero]

There’s something wrong with firebase that doesn’t allow me to get all the tags if there are only numbers inside.

If I have the structure like this, only with numbers:

It doesn’t let me get anything from inside “alunos”

But if I add a tag with any value below the numbers, then I get all the values.

So I add a “counter” tag with any value (1, for example):

When I get all the tags, if they are all numbers, the last one is the tag “counter”. So I remove the last value from the list of the tags. And there you have the values of all the alunos.

You can put all those values in a Picker and when you select 1, you get the data of that aluno.

The blocks would look something like this:

This way the values of each aluno will appear in the Spinner and when you select it you get all the data.

[waldir_dias]

Only numbers that is a codigo of aluno and inside will have all of information.

[pepocero]

Okay, then follow the instructions of what I put in the previous message. I did some tests and it works perfectly.

[waldir_dias]

Nice, I will try. Thank you.

[ImranTariq]

@pepocero

There’s something wrong with firebase that doesn’t allow me to get all the tags if there are only numbers inside.

yes you are right if all tags are numbers only you will not get any data, there must be any alphabetic tag to get all.

[pepocero]

@ImranTariq

yes you are right if all tags are numbers only you will not get any data, there must be any alphabetic tag to get all.

I was going crazy wanting to get the numbers hehe
Thank you!

[ImranTariq]

haha, same here i have spent a whole day after that and then realize this.