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Template are now data sources

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Emilien Kenler 2016-08-31 12:04:55 +09:00
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16
website/source/docs/configuration/interpolation.html.md
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@ -246,12 +246,12 @@ The supported built-in functions are:
## Templates
Long strings can be managed using templates. [Templates](/docs/providers/template/index.html) are [resources](/docs/configuration/resources.html) defined by a filename and some variables to use during interpolation. They have a computed `rendered` attribute containing the result.
Long strings can be managed using templates. [Templates](/docs/providers/template/index.html) are [data-sources](/docs/configuration/data-sources.html) defined by a filename and some variables to use during interpolation. They have a computed `rendered` attribute containing the result.
A template resource looks like:
A template data source looks like:
```
resource "template_file" "example" {
data "template_file" "example" {
template = "${hello} ${world}!"
vars {
hello = "goodnight"
@ -260,7 +260,7 @@ resource "template_file" "example" {
}
output "rendered" {
value = "${template_file.example.rendered}"
value = "${data.template_file.example.rendered}"
}
```
@ -271,7 +271,7 @@ You may use any of the built-in functions in your template.
### Using Templates with Count
Here is an example that combines the capabilities of templates with the interpolation
from `count` to give us a parametized template, unique to each resource instance:
from `count` to give us a parameterized template, unique to each resource instance:
```
variable "count" {
@ -285,7 +285,7 @@ variable "hostnames" {
}
}
resource "template_file" "web_init" {
data "template_file" "web_init" {
// here we expand multiple template_files - the same number as we have instances
count = "${var.count}"
template = "${file("templates/web_init.tpl")}"
@ -299,11 +299,11 @@ resource "aws_instance" "web" {
// ...
count = "${var.count}"
// here we link each web instance to the proper template_file
user_data = "${element(template_file.web_init.*.rendered, count.index)}"
user_data = "${element(data.template_file.web_init.*.rendered, count.index)}"
}
```
With this, we will build a list of `template_file.web_init` resources which we can
With this, we will build a list of `template_file.web_init` data sources which we can
use in combination with our list of `aws_instance.web` resources.
## Math