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api-guidelines/execution/localization.md
2017-06-26 09:14:16 +02:00

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# Localization
## Language Variants
If a resource has multiple language variants and the difference between variants is only in the language of human-readable fields, then the [`Accept-Language`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language) request HTTP header **SHOULD** be used to select the desired language variant.
#### Example
```
GET /article HTTP/1.1
Accept-Language: en,en-US,fr;q=0.6
```
```
HTTP/1.1 200 OK
Content-Type: application/hal+json;charset=UTF-8
Content-Language: en
Vary: Accept-Language
...
```
## Language or Country-specific Data Structure
If the difference between language or country specific variants of a resource is bigger than just in the content of human readable strings, for example, the data structure of the resource representation is different, then a query parameter **SHOULD** be used to communicate the requested variant.
#### Example
```
GET /article?market=en_US HTTP/1.1
```
```
HTTP/1.1 200 OK
Content-Type: application/hal+json;charset=UTF-8
Content-Language: en
Vary: Accept-Language
...
```