We have a list of objects defined in vars.tf:
variable "sendgrid_dns_records" {
type = list(object({
type = string
name = string
value = string
}))
description = "DNS Records for sendgrid.com"
}
variable "cloudflare_zone_id" {
type = string
description = "cloudflare zone id"
}
And have recorded their values in xyz.tfvars:
sendgrid_dns_records = [
{"name": "url3415.netletic.xyz", "value": "sendgrid.net", "type": "CNAME"},
{"name": "29342668.netletic.xyz", "value": "sendgrid.net", "type": "CNAME"},
{"name": "em9437.netletic.xyz", "value": "u29342668.wl169.sendgrid.net", "type": "CNAME"},
{"name": "s1._domainkey.netletic.xyz", "value": "s1.domainkey.u29342668.wl169.sendgrid.net", "type": "CNAME"},
{"name": "s2._domainkey.netletic.xyz", "value": "s2.domainkey.u29342668.wl169.sendgrid.net", "type": "CNAME"},
]
Now we want to create DNS records for each of these in Cloudflare:
resource "cloudflare_record" "this" {
for_each = {
for index, dns_record in var.sendgrid_dns_records:
dns_record.name => dns_record
}
zone_id = var.cloudflare_zone_id
name = each.value.name
value = each.value.value
type = each.value.type
ttl = 300
}
This works because we use for_each to create a new dictionary (map), where the key=dns_record.name, and the value=the entire object. Something like:
{'29342668.netletic.xyz': {'name': '29342668.netletic.xyz',
'type': 'CNAME',
'value': 'sendgrid.net'},
'url3415.netletic.xyz': {'name': 'url3415.netletic.xyz',
'type': 'CNAME',
'value': 'sendgrid.net'}
...}
So when we use for_each. We can refer to each.name, each.type, and each.value for each iteration. We don't care about each.key as it's the same as each.value.name.
See StackOverflow for more info