# TFNFR8 - Resource & Data Block Orders

Module Specification for the Azure Verified Modules (AVM) program

ID: TFNFR8 - Category: Code Style - Resource & Data Block Orders There are 3 types of assignment statements in a resource or data block: argument, meta-argument and nested block. The argument assignment statement is a parameter followed by =:
location = azurerm_resource_group.example.location or:
tags = { environment = "Production" } Nested block is a assignment statement of parameter followed by {} block:
subnet { name = "subnet1" address_prefix = "10.0.1.0/24" } Meta-arguments are assignment statements can be declared by all resource or data blocks. They are:
count depends_on for_each lifecycle provider The order of declarations within resource or data blocks is:
All the meta-arguments SHOULD be declared on the top of resource or data blocks in the following order:
provider count for_each Then followed by:
required arguments optional arguments required nested blocks optional nested blocks All ranked in alphabetical order.
These meta-arguments SHOULD be declared at the bottom of a resource block with the following order:
depends_on lifecycle The parameters of lifecycle block SHOULD show up in the following order:
create_before_destroy ignore_changes prevent_destroy parameters under depends_on and ignore_changes are ranked in alphabetical order.
Meta-arguments, arguments and nested blocked are separated by blank lines.
dynamic nested blocks are ranked by the name comes after dynamic, for example:
dynamic "linux_profile" { for_each = var.admin_username == null ? [] : ["linux_profile"] content { admin_username = var.admin_username ssh_key { key_data = replace(coalesce(var.public_ssh_key, tls_private_key.ssh[0].public_key_openssh), "\n", "") } } } This dynamic block will be ranked as a block named linux_profile.
Code within a nested block will also be ranked following the rules above.
PS: You can use avmfix tool to reformat your code automatically.


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Source: https://raw.githubusercontent.com/Azure/Azure-Verified-Modules/refs/heads/main/docs/content/specs-defs/includes/terraform/shared/non-functional/TFNFR8.md
Last Modified: 0001-01-01