Fix cf-exports Warning - List items should be accessed using square brackets (terraform_deprecated_index)

Author: caiovfernandes

cf-exports.tf

@@ -6,13 +6,13 @@ resource "aws_cloudformation_stack" "tf_exports" {
       "VpcId"                  = aws_vpc.default.id,
       "CidrBlock"              = aws_vpc.default.cidr_block,
       "InternetGatewayId"      = aws_internet_gateway.default.id,
-      "PublicSubnetIds"        = join(",", aws_subnet.public.*.id),
-      "PublicSubnetCidrs"      = join(",", aws_subnet.public.*.cidr_block),
-      "PrivateSubnetIds"       = join(",", aws_subnet.private.*.id),
-      "PrivateSubnetCidrs"     = join(",", aws_subnet.private.*.cidr_block),
-      "SecureSubnetIds"        = join(",", aws_subnet.secure.*.id),
-      "SecureSubnetCidrs"      = join(",", aws_subnet.secure.*.cidr_block),
-      "NatGatewayIds"          = var.nat ? join(",", aws_nat_gateway.nat_gw.*.id) : "undefined",
+      "PublicSubnetIds"        = join(",", aws_subnet.public[*].id),
+      "PublicSubnetCidrs"      = join(",", aws_subnet.public[*].cidr_block),
+      "PrivateSubnetIds"       = join(",", aws_subnet.private[*].id),
+      "PrivateSubnetCidrs"     = join(",", aws_subnet.private[*].cidr_block),
+      "SecureSubnetIds"        = join(",", aws_subnet.secure[*].id),
+      "SecureSubnetCidrs"      = join(",", aws_subnet.secure[*].cidr_block),
+      "NatGatewayIds"          = var.nat ? join(",", aws_nat_gateway.nat_gw[*].id) : "undefined",
       "DbSubnetGroupId"        = try(aws_db_subnet_group.secure[0].id, "undefined")
       "DbSubnetPrivateGroupId" = try(aws_db_subnet_group.private[0].id, "undefined")
       "DbSubnetPublicGroupId"  = try(aws_db_subnet_group.public[0].id, "undefined")