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azure-rm-template

Parameter of Array type in ARM Template

I have an ARM Template with a parameter of array type as follows:

enter image description here

How do I set values in 2nd and 3rd position of parameter array? (for instance, "b", "c" in this example)

Solution

  • Method 1: Directly using the array index -

    You can use the values of Array parameter by using this expression:

    For 1st value: "[parameters('parameter1')[0]]"

    For 2nd value: "[parameters('parameter1')[1]]"

    For 3rd value: "[parameters('parameter1')[2]]"

    You can test this sample template for fetching the values from array and displaying in the output:

    {
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "parameter1": {
            "defaultValue": [
                "value1",
                "value2",
                "value3"
            ],
            "type": "Array"
        }
    },
    "resources": [],
    "outputs": {
        "firstValue": {
            "type": "String",
            "value": "[parameters('parameter1')[0]]"
        },
        "secondValue": {
            "type": "String",
            "value": "[parameters('parameter1')[1]]"
        },
        "thirdValue": {
            "type": "String",
            "value": "[parameters('parameter1')[2]]"
        }
    }
}

    Update:

    Method 2: If you want to use copyIndex. Use the below expression - 

    "[parameters('parameter1')[copyIndex()]]"

    Please check the below example:

    {
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "parameter1": {
            "defaultValue": [
                "strvalue1",
                "strvalue2"
            ],
            "type": "Array"
        }
    },
    "resources": [
        {
            "type": "Microsoft.Storage/storageAccounts",
            "apiVersion": "2019-04-01",
            "name": "[parameters('parameter1')[copyIndex()]]",
            "location": "[resourceGroup().location]",
            "sku": {
                "name": "Standard_LRS"
            },
            "kind": "Storage",
            "properties": {},
            "copy": {
                "name": "storagecopy",
                "count": "[length(parameters('parameter1'))]"
            }
        }
    ]
}