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This decision was made by the Tech Leads group prior to the adoption of current decision making processes within the FOLIO project.

Background/Context

To translate messages it returns a back-end API needs to know the locale of the client.

Example message: "No item with barcode {itemBarcode} exists", for details see https://wiki.folio.org/display/I18N/How+To+translate+FOLIO

Example locale: de for German

Two ways to pass the current locale to a back-end API have been proposed:

• accept-language HTTP header line
• lang query parameter

For details see Image ModifiedFOLIO-3196 - DECISION: Localisation parameter for back-end CLOSED

While it may be possible that Stripes supports multiple ways to pass the locale FOLIO should agree upon a single way that all back-end modules should use.

This was discussed among front-end devs during multiple stripes-architecture meetings with conclusions in Image ModifiedSTRIPES-750 - DECISION: Which module should host back-end translation files? CLOSED , and then by the Tech Council on 2021-06-09 and 2021-06-16.

Assumptions

List all assumptions that were made when making the decision

Constraints

List any constraints that lead us to make a certain decision

Rationale

Document the thought process, list reasons that lead to the final decisionN/A

Constraints

N/A

Rationale

N/A

Decision

Back-end modules shall read the HTTP Accept-Language header, as specified in RFC-7231 Section 5.3.5, to determine the desired locale of the response.

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