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# Render a template’s example

POST https://api.cloudraker.com/v1/compose/configs/{idOrSlug}/preview
Content-Type: application/json

Renders the template with one of its saved examples and returns the PDF bytes — the editor's preview button.

`example` names the example to use; without it the first one is rendered. A template with no examples at all still previews — it renders with empty data `{}`, which is what a fresh template's static content needs.

A template with no files or no `main` answers `422 config_incomplete`; a name that matches no saved example answers `404 example_not_found`.

**Learn more:** [Compose](https://docs.cloudraker.com/capabilities/compose)

Reference: https://docs.cloudraker.com/api/cloud-raker-api/compose/preview-compose-template

## Authentication

- `Authorization` header (bearer token, required)

## Request

### Path parameters

- `idOrSlug` (string, required)

### Body (application/json)

- `example` (string, optional)

## Response

### 200

The rendered PDF.

- File download.

## Examples

**Request**

```json
{}
```

**SDK Code**

```typescript
import { CloudRakerClient } from "@cloudraker/api";

async function main() {
    const client = new CloudRakerClient({
        token: "YOUR_TOKEN_HERE",
    });
    await client.compose.previewComposeTemplate({
        idOrSlug: "idOrSlug",
    });
}
main();

```

```python
from cloudraker import CloudRaker

client = CloudRaker(
    token="YOUR_TOKEN_HERE",
)

client.compose.preview_compose_template(
    id_or_slug="idOrSlug",
)

```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.cloudraker.com/v1/compose/configs/idOrSlug/preview"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.cloudraker.com/v1/compose/configs/idOrSlug/preview")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.cloudraker.com/v1/compose/configs/idOrSlug/preview")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.cloudraker.com/v1/compose/configs/idOrSlug/preview', [
  'body' => '{}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.cloudraker.com/v1/compose/configs/idOrSlug/preview");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.cloudraker.com/v1/compose/configs/idOrSlug/preview")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```