Documentation: Complex Iterator example fails on plan

[Maed223]

Description

Currently our example is as so:

const complexIterator = TerraformIterator.fromList([
      {
        name: "website-static-files",
        tags: { app: "website" },
      },
      {
        name: "images",
        tags: { app: "image-converter" },
      },
    ] as any);

    new S3Bucket(this, "complex-iterator-bucket", {
      forEach: complexIterator,
      bucket: complexIterator.getString("name"),
      tags: complexIterator.getStringMap("tags"),
    });

Which synths fine (and it why we haven't caught it) but fails on plan with the following error:

│ Error: Invalid for_each set argument
│
│   on cdk.tf.json line 28, in resource.aws_s3_bucket.complex-iterator-bucket (complex-iterator-bucket):
│   28:         "for_each": "${toset([{\"name\" = \"website-static-files\", \"tags\" = {\"app\" = \"website\"}}, {\"name\" = \"images\", \"tags\" = {\"app\" = \"image-converter\"}}])}",
│
│ The given "for_each" argument value is unsuitable: "for_each" supports maps
│ and sets of strings, but you have provided a set containing type object.

Debugged it and got the following which works:

const complexIterator = TerraformIterator.fromMap({
      "website-static-files": { name: "website-static-files", tags: { app: "website" } },
      "images": { name: "images", tags: { app: "image-converter" } }
});

new S3Bucket(this, "complex-iterator-bucket", {
  forEach: complexIterator,
  bucket: complexIterator.getString("name"),
  tags: complexIterator.getStringMap("tags"),
})

Links

https://developer.hashicorp.com/terraform/cdktf/concepts/iterators#using-iterators-on-complex-types:~:text=Using%20Iterators%20on%20Complex%20Types

Help Wanted

• [ ] I'm interested in contributing a fix myself

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[xiehan]

Duplicate of #2452

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