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How to parse JSON properly?

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Posted on by PowerAppBuilder24

Hello together,

I am currently working on a PowerAPP that requries Parsing of JSON-Arrays. This is way harder than I thought. Maybe I do something wrong and you could give me a pointer in the right direction.

Lets talk about the Situation:

I have a SharePoint List with only one Column. That Columns contains the JSON-Array which is needed to be parsed. The important point is now that I need to read back the JSON-String into an Table. Because I want to display the results in a gallery.

Title	Result
Currently not used but later for Filtering	JSON-Array

Each Line contains one JSON-Array with the same structure but individual Data:

{
    "Data": [
        {
            "Choices": "YES;NO;MAYBE",
            "ColumnType": "Form 1",
            "Data": "YES",
            "FormName": "Form 1",
            "QuestionNR": 1,
            "Requried": "Yes",
            "Title": "Would you recommend this Pizza?"
        },
        {
            "Choices": "YES;NO;MAYBE",
            "ColumnType": "Choices",
            "Data": "MAYBE",
            "FormName": "Form 1",
            "QuestionNR": 3,
            "Requried": "Yes",
            "Title": "Would you recommend this Pizza?"
        }
    ]
}

Now the Idea is to read back the Information into a Collection / Table to display the Data in a Gallery. Each Entry in the Sharepoint-List where the JSON-Array is stored should be one Entry in the Gallery.

Summary:

Reading JSON String
Parsing JSON
Create Table based on Parsed JSON

Would be great if you can support me here. I tried several ways but for me its not possible to get the Data back.

Categories:

Building Power Apps

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Daniel Bocklandt 5,099 Super User 2025 Season 2 on at

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Hey @PowerAppBuilder24,

Check out this link: JSON and ParseJSON Functions - Platforms of Power

There it is explained pretty easily.

If this solvede your porblem please accept it as solution so others can find it as well.
If it helped in any other way consider liking it so we can keep supporting eachother.

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PowerAppBuilder24 20 on at

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Hey @DBO_DV,

thank you for the Link. The Problem is that I dont wanna click on a extra button. The Gallery should be able to display some Info directly - without pressing the "View" icon...

The Link works but it assumes that you need to click on the button. I need that without the click.. Do you know a good way to achieve this?

Best regards

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Daniel Bocklandt 5,099 Super User 2025 Season 2 on at

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Hey @PowerAppBuilder24,

When do you load the data into your app? Directly on start?

you could put this onStart of the app or when you Navigate to this screen.

If this solvede your porblem please accept it as solution so others can find it as well.
If it helped in any other way consider liking it so we can keep supporting eachother.

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PowerAppBuilder24 20 on at

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Hey @DBO_DV,

currently the Data is loaded in the Gallery if Screen is visible (default PowerAPPs behaviour). The problem is if I dont use a gallery I am not able to use the elegant Way of ThisItem.XYZ.

If I remember correctly - I tried that with another forall-Loop. Do you have an good Way of doing that?

As far as I know it should look like this:

ForAll Sharepoint-Lists entries:

ForAll JSON-Array Elements:

ParseJSON()...

Maybe you could give me some hints - I highly appreciate it!

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Daniel Bocklandt 5,099 Super User 2025 Season 2 on at

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If you want to have everything at once you could out it in the OnStart property off the app.
This will make the loading time a bit longer

Clear(colNewTable); ForAll(Datasource As X, Collect(colNewTable, ForAll(Table(ParseJSON(X.Result).Data), { Choices: Split(Text(Value.Choices),","), ColumnType: Text(Value.ColumnType), Data: Text(Value.Data), FormName: Text(Value.FormName), QuestionNR: Value(Value.QuestionNR), Requried: Text(Value.Requried), Title: Text(Value.Title), FilterID: X.Title } ) ) )

If this solvede your porblem please accept it as solution so others can find it as well.
If it helped in any other way consider liking it so we can keep supporting eachother.

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PowerAppBuilder24 20 on at

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Hey @DBO_DV,

this is working fine. Thank you very much.. I made small changes (removing the .Data). But now it works fine. This app is only for small Data so I can forget about the loading speed.

This will help me also in Future for parsing JSON... Now I understood the concept - thank you.

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