Sort an array in Power Automate

Have you ever tried to sort an array or collection in Power Automate?

The sort function in Power Automate

Did you ever look for the Sort function when you build your expressions?

You can stop searching! It doesn’t exist. There is no easy way to sort an array. But it is not impossible to sort your array.

To filter an array is easy, as there is an action for that, but sorting can be a real pain.

The Sort an array Azure Function

You could however create an Azure function. Only recently the option to create Powershell v2 functions Apps can be created in Azure.

You can of course do similar thing in C# but, isn’t PowerShell a lot easier?

Once the function has been created you will get the following example:

The above code needs to be adjusted so that my json is received and sorted and then returned.

The above code I’m replacing with:

using namespace System.Net

# Input bindings are passed in via param block.
param($Request, $TriggerMetadata)

# Write to the Azure Functions log stream.
Write-Host "PowerShell HTTP trigger function processed a request."

# Interact with query parameters or the body of the request.
$myArray = $Request.Query.MyArray
if (-not $MyArray) {
  $myArray = $Request.Body.MyArray
}

if ($myArray) {

  $myArrayObj = ConvertFrom-JSON $myArray

  $mySortedArrayObj = $myArrayObj | Sort-Object -Property Title

  $body = ConvertTo-Json $mySortedArrayObj
  $status = [HttpStatusCode]::OK
}
else {
  $status = [HttpStatusCode]::BadRequest
  $body = "Please pass a json on the query string or in the request body."
}

# Associate values to output bindings by calling 'Push-OutputBinding'.
Push-OutputBinding -Name Response -Value ([HttpResponseContext]@{
     StatusCode = $status
     Body = $body
})

The Flow

The first Compose contains the following unsorted json collection:

[{Title:'Title 1', Description:'Description 1'},
{Title:'Title 3', Description:'Description 3'},
{Title:'Title 2', Description:'Description 2'},
{Title:'Title 5', Description:'Description 5'},
{Title:'Title 4', Description:'Description 4'}]

The second Compose validates my json. This isn’t really needed but always good to do during tests like this.

Then the 3rd Compose returns the result.