combine "count" and "for_each" is not possible

Question

This is my code source

resource "aws_s3_bucket_object" "object" {
  count               = var.s3_create[1] ? 1 : 0 
  depends_on          = [aws_s3_bucket.bucket_backup]
  for_each            = local.buckets_and_folders 
    bucket            = each.value.bucket_backup
    key               = format("%s/", each.value.folder)
  force_destroy       = true
} 

In other words, I'm traying to create object aws_s3_bucket_object depends on variable s3_create ... create if true else not create.

Issue: I am not able to use the combination of both the below syntax in creating the terraform resource and I'm geeting :

Error: Invalid combination of "count" and "for_each"
│
│   on ..\s3\resources.tf line 51, in resource "aws_s3_bucket_object" "object":
│   51:   for_each            = local.buckets_and_folders
│
│ The "count" and "for_each" meta-arguments are mutually-exclusive, only one should be used to be explicit about the number of resources to be created.

Answer 1

Both count and for_each apply to the whole block. Indenting lines underneath a for_each doesn't impact anything but human readability.

Try using the ternary operator with a for_each instead of a count. If the value is false, return an empty set.

resource "aws_s3_bucket_object" "object" {
  for_each       = var.s3_create[1] ? tomap({local.buckets_and_folders}) : {}
  bucket         = each.value.bucket_backup
  key            = format("%s/", each.value.folder)
  depends_on     = [aws_s3_bucket.bucket_backup]
  force_destroy  = true
}