Terraform assign variable value using for loop if condition is true

Question

I need to assign short_id to variable short_location_name,

I have map short_location_names in below terrfaorm code, if "var.location" is "westus", I need to assign short_location_names "wus"

my_code:

locals {
  short_location_names = {
      "westus": "wus",
      "eastus": "eus",
      "westus2": "wus2",
      "eastus2": "eus2"
  }
  short_location_name = {
    for location, short_id in local.short_location_names: location == var.location ? short_location_name => short_id
  }

I tried above code, I getting error missing false statement, How to fix?

luk2302 · Accepted Answer · 2021-07-29 07:25:39Z

2

Use the lookup function instead:

short_location_name = lookup(local.short_location_names, var.location, null)

or

short_location_name = { var.location: lookup(local.short_location_names, var.location, null) }

Or simply local.short_location_names[var.location] if the value will always be present in the map.

answered Jul 29, 2021 at 7:25

luk2302

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gaurav patel · Accepted Answer · 2023-07-27 09:56:16Z

2

Working Solution

locals {
 short_location_name  = "${lookup(local.region_code, var.location, "null")}"

 region_code = {

 "East US 2" = "use2"
 "eastus2" = "use2"
 "West US 2" = "usw2"
 "westus2" = "usw2"
 
 }
}

answered Jul 27, 2023 at 9:56

gaurav patel

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