terraform_mapped_vars_for_each

apply_main.tf

# This is the resource to create
module "config_generator" {
  source = "map_module_main.tf" // ? usually point to github url or place on disk where the module exists
  name = var.config_names
}
  
variable "config_names" {
  type = list(any)
  default = [
    "app",
    "db"
  ]
  description = "Two configs generated"
}

map_module_main.tf

# How to create a map and add two variables to it in Terraform. This would be the module

variable "environment" {
  type = list(any)
  default = [
    "test",
    "acce",
    "prod",
  ]
  description = "Environments to create, hardcoded"
}

variable "name" {
  type        = list(any)
  default = []
  description = "Config name"
}

locals {
    environment = [
        for key, env in var.environment : {
            key  = key
            env = env
        }
    ]

    name = [
        for key, name in var.name : {
            key  = key
            name = name
        }
    ]

    mapped = [
        for pair in setproduct(local.environment, local.name) : {
            env  = pair[0].env
            name = pair[1].name
        }
    ]
}

// Resource does not exist, so dont copy and paste it
resource "config" "main" {
  for_each = {
    for mapped in local.mapped : "${mapped.env}.${mapped.name}" => mapped
  }

  environment = each.value.env
  name        = each.value.name
}