interpolationFuncElement issue after #785

[pmoust]

After #785 I get config: multi-variable must be in a slice during plan on many resources across our infrastructure configuration. A small sample is below that produces the err * resource 'aws_route_table_association.pph' config: multi-variable must be in a slice

variables.tf;

variable "zones" {
    default = {
        zone0 = "us-east-1b"
        zone1 = "us-east-1c"
        zone2 = "us-east-1e"
    }
}
variable "subnet_count" {
    description = "Number of subnets to use"
    default = 3
}

vpc.tf;

resource "aws_subnet" "pph" {
  vpc_id = "${aws_vpc.pph.id}"
  cidr_block = "${lookup(var.cidr_blocks, concat("zone", count.index))}"
  availability_zone = "${lookup(var.zones, concat("zone", count.index))}"

  tags {
        Name = "${lookup(var.subnet_tags, count.index)}"
  }

  count = "${var.subnet_count}"
  map_public_ip_on_launch = false
}

resource "aws_internet_gateway" "pph" {
    vpc_id = "${aws_vpc.pph.id}"
}

resource "aws_route_table" "pph" {
    vpc_id = "${aws_vpc.pph.id}"
    route {
        cidr_block = "0.0.0.0/0"
        gateway_id = "${aws_internet_gateway.pph.id}"
    }
}

resource "aws_route_table_association" "pph" {
    subnet_id       = "${element(aws_subnet.pph.*.id, count.index)}"
    route_table_id  = "${aws_route_table.pph.id}"
    count           = "${var.subnet_count}"
}

[pmoust]

Terraform v0.3.7.dev (9ee3626+CHANGES)

[mitchellh]

Good catch. I know exactly what this is. We don't have tests around this which I'll add now.

[mitchellh]

Fixed!

[ghost]

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