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PowerUser12
Employee
Employee

JSON function in PowerApps is adding unnecessary "Value" field name for single column collections. How to get resolve this?

Hi folks,

I am using PowerApps and Power-Automate integration for one automation requirement. In this I am triggering a flow from PowerApps and passing some input value in form of JSON. This JSON is later used within the Power automate for some functionality. My basic structure is something like below:

Below is my PowerApps form:

PowerUser12_0-1635941107374.png

 

Below is the input I get in Power Automate:

PowerUser12_1-1635941107375.png

 

As you can see the JSON input in Power Automate is something like this:

{"prop1":"val1","prop2":[{"Value":"Test1"},{"Value":"Test2"},{"Value":"Test3"},{"Value":"Test7"}]}

Where as as per my requirements I need below input in Power Automate:

{"prop1":"val1","prop2":["Test1","Test2","Test3"]}

I know that I can parse the JSON in power automate, initialise an array variable, then set my JSON again with the new array variable.

But unfortunately this will not work in my case, as the schema of input will always not be same for multiple scenarios.

The app and flow I am posting here are just examples to explain my issue in simple manner.

In actual scenario both and App and Flow has some complex logic and complex functionality.

Due to which I am not in position to iterate through all properties of the input in Power automate and then assign some array.

Can anyone please help me on how I can avoid the additional "Value" property name being added in the input passed from PowerApps?

 

Many Thanks in advance.

2 REPLIES 2
ekarim2020
Super User
Super User

The following flow should be able to transform the JSON object:

2021-11-03_19-42-10.png

 

(1) The source data is input into a compose action:

2021-11-03_19-17-08.png

 

(2) The Select action selects all the values of "prop2" producing an array as its output:
["Test1", "Test2", "Test3", "Test7"]

2021-11-03_19-21-23.png

(3) Then we "reconstruct" the JSON object into the new format using the output (array) from the Select action above:

2021-11-03_19-25-27.png

This is the output of varJSON which you will need to return to PowerApps:

ekarim2020_0-1635968101332.png

Source JSON:

 

{
  "prop1": "val1",
  "prop2": [
    {
      "Value": "Test1"
    },
    {
      "Value": "Test2"
    },
    {
      "Value": "Test3"
    },
    {
      "Value": "Test7"
    }
  ]
}

 

New JSON object:

 

{
  "prop1": "val1",
  "prop2": [
    "Test1",
    "Test2",
    "Test3",
    "Test7"
  ]
}

 

Hope this helps.


Ellis
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@ekarim2020 Thanks a lot for your response on this. Actually My flow logic is dynamic for multiple types of inputs with different JSON schemas. Hence parsing the JSON in the initial step means, for different schemas, I will have to write different flows. Which is bit cumbersome at the moment. Hence I was looking for an option to pass array right from the PowerApps instead of modifying the input from Power Automate. 

 

If any such workarounds possible, that would be really great to have.

 

Many Thanks.

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