This method allows you to edit an existing config file within a template.

## URL

```
/templates/<permalink>/config_files/<identifier>
```

* Replace `<permalink>` with the permalink of the template.
* Replace `<identifier>` with the identifier of the config file

## HTTP Method

```
PUT
```

## Supported Parameters

* `path` - the full path and name of the config file (required)
* `body` - the body of the config file (required)
* `build` - if the config file should be used in build pipeline (required - `true` or `false`) 
- `all_servers` - If the command should be run on all servers set to true, otherwise send an array of `server_identifiers` (optional)
- `server_identifiers` - An array of server identifiers that the config file should be uploaded to (optional)

## Example cURL Request

```bash
curl -H "Content-type: application/json" \
-H "Accept: application/json" \
--user adam@atechmedia.com:my-api-key \
-X PUT \
-d '{ \
  "config_file":{ \
    "path":"database.yml", \ 
    "body":"development:\n  adapter: mysql2", \ 
    "build":true, \ 
    "servers":[] \
  } \
}' \
https://atech.deployhq.com/templates/api-created/config_files/6908c22d-7d9e-48bf-be34-f4f327d89d61
```

## Example Response

```json
{
  "identifier":"6908c22d-7d9e-48bf-be34-f4f327d89d61",
  "path":"database.yml",
  "body":"development:\n  adapter: mysql2",
  "build":true,
  "servers":[]
}
```