Use a real resource
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@ -664,28 +664,31 @@ form. This covers many uses, but some resource types include repeatable _nested
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blocks_ in their arguments, which do not accept expressions:
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blocks_ in their arguments, which do not accept expressions:
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```hcl
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```hcl
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resource "sample_resource" "example" {
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resource "aws_elastic_beanstalk_environment" "tfenvtest" {
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name = "example" # can use expressions here
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name = "tf-test-name" # can use expressions here
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repeatable_block {
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setting {
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# but the "repeatable_block" block is always a literal block
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# but the "setting" block is always a literal block
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}
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}
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}
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}
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```
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```
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You can dynamically construct repeatable nested blocks like `repeatable_block` using a
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You can dynamically construct repeatable nested blocks like `setting` using a
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special `dynamic` block type, which is supported inside `resource`, `data`,
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special `dynamic` block type, which is supported inside `resource`, `data`,
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`provider`, and `provisioner` blocks:
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`provider`, and `provisioner` blocks:
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```hcl
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```hcl
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resource "sample_resource" "example" {
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resource "aws_elastic_beanstalk_environment" "tfenvtest" {
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name = "example" # can use expressions here
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name = "tf-test-name"
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application = "${aws_elastic_beanstalk_application.tftest.name}"
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solution_stack_name = "64bit Amazon Linux 2018.03 v2.11.4 running Go 1.12.6"
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dynamic "repeatable_block" {
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dynamic "setting" {
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for_each = var.things
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for_each = var.settings
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content {
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content {
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val1 = repeatable_block.value
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namespace = setting.value["namespace"]
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val2 = repeatable_block.value
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name = setting.value["name"]
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value = setting.value["value"]
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}
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}
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}
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}
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}
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}
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@ -695,12 +698,12 @@ A `dynamic` block acts much like a `for` expression, but produces nested blocks
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instead of a complex typed value. It iterates over a given complex value, and
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instead of a complex typed value. It iterates over a given complex value, and
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generates a nested block for each element of that complex value.
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generates a nested block for each element of that complex value.
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- The label of the dynamic block (`"repeatable_block"` in the example above) specifies
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- The label of the dynamic block (`"setting"` in the example above) specifies
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what kind of nested block to generate.
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what kind of nested block to generate.
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- The `for_each` argument provides the complex value to iterate over.
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- The `for_each` argument provides the complex value to iterate over.
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- The `iterator` argument (optional) sets the name of a temporary variable
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- The `iterator` argument (optional) sets the name of a temporary variable
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that represents the current element of the complex value. If omitted, the name
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that represents the current element of the complex value. If omitted, the name
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of the variable defaults to the label of the `dynamic` block (`"repeatable_block"` in
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of the variable defaults to the label of the `dynamic` block (`"setting"` in
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the example above).
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the example above).
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- The `labels` argument (optional) is a list of strings that specifies the block
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- The `labels` argument (optional) is a list of strings that specifies the block
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labels, in order, to use for each generated block. You can use the temporary
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labels, in order, to use for each generated block. You can use the temporary
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@ -712,7 +715,7 @@ Since the `for_each` argument accepts any collection or structural value,
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you can use a `for` expression or splat expression to transform an existing
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you can use a `for` expression or splat expression to transform an existing
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collection.
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collection.
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The iterator object (`repeatable_block` in the example above) has two attributes:
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The iterator object (`setting` in the example above) has two attributes:
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* `key` is the map key or list element index for the current element. If the
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* `key` is the map key or list element index for the current element. If the
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`for_each` expression produces a _set_ value then `key` is identical to
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`for_each` expression produces a _set_ value then `key` is identical to
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