ARM Template: how to read output result in array format - azure

Question

I posted some question on stackoverflow and would like to thanks those who take time to answer.
Although it exists documentation, i still face an issue related to output feature.
Basically I understand how to retrieve data when format is string.
Unfortunately when data is on array format it looks more difficult for me.
"outputs": {
"keyVaultName": {
"type": "string",
"value": "[variables('keyVaultName')]"
},
"websitesname": {
"type": "array",
"copy": {
"count": "[length(variables('webSitesName'))]",
"input": {
"name": "[variables('webSitesName')[copyIndex()].name]"
}
}
}
}
Then i do this:
$deploymentResult = New-AzResourceGroupDeployment -Name $deploymentName -ResourceGroupName
$ResourceGroupName-TemplateFile $TemplateFile
$vaultName = $deploymentResult.Outputs.keyVaultName.Value
$arrayWebsitesName = $deploymentResult.Outputs.websitesname.Value
I need to extract value from returned array. In powershell i expected to use something like
$arrayWebsitesName[0] to get AppService-Prod-CentralUS
$arrayWebsitesName[\1] to get AppService-Prod-EastUS
I believe there is something related to conversion and I tried convertto-json without success.
Your help is appreciated !

Answer 1

The variable type returned from the deployment for websitesname is a JArray.
PS> $deploymentResult.Outputs.websitesname.Value.GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True False JArray Newtonsoft.Json.Linq.JContainer
In order to get at the values, you would make the call like:
$arrayWebsitesName = $deploymentResult.Outputs.websitesname.Value
$ids = $arrayWebsitesName.ToString() | ConvertFrom-Json
$ids[0].name
$ids[1].name
Converting the JArray to a JSON string, and then converting the JSON string to a PowerShell array may not be most efficient but I don't typically deal with large arrays and performance is not a concern (gets the job done).