Feature Request: Allow self-referencing in heroku_app configs

[onnimonni]

Terraform Version

Terraform v0.9.11

Terraform Configuration Files

resource "heroku_app" "production" {
  name = "test-app-production"
  region = "us"

  # Tell the dyno it's own hostname so we can send email from workers with correct address
  config_vars {
    SERVER_NAME = "${self.heroku_hostname}"
  }
}

Debug Output

$ terraform apply
1 error(s) occurred:

* module root: 1 error(s) occurred:

* resource 'heroku_app.production' config: cannot contain self-reference self.heroku_hostname

Expected Behavior

It would be really useful to be able to tell the application it's own hostname. I usually add this manually after the build.

Steps to Reproduce

1. terraform apply

Alternative solution

I know that this might be really hard to solve with the terraform architecture. Maybe we could have a resource like heroku_app_config which could depend on heroku_app and which could be used to update the config_vars after the heroku_app instance is created.

References

The self-referencing on resources was shortly discussed in:

• Self Variables #1033

[ghost]

This issue has been automatically migrated to terraform-providers/terraform-provider-heroku#203 because it looks like an issue with that provider. If you believe this is not an issue with the provider, please reply to terraform-providers/terraform-provider-heroku#203.

[ghost]

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