fix: fix language & preview in GraphQL SSR

Author: gregberge

packages/smooth/src/server/apollo.js

@@ -8,10 +8,11 @@ import {
 import { ValidateLink } from './links/validate'
 import { createAPIClient } from '../api'
 
-export function getContext({ req, config }) {
-  const lang = req.headers['x-smooth-lang'] || null
-  const preview = Boolean(req.headers['x-smooth-preview'])
-  const id = req.headers['x-smooth-preview-id'] || null
+export function getContext({ req, config, operationContext }) {
+  const headers = operationContext ? operationContext.headers : req.headers
+  const lang = headers['x-smooth-lang'] || null
+  const preview = Boolean(headers['x-smooth-preview'])
+  const id = headers['x-smooth-preview-id'] || null
   return {
     api: createAPIClient({ config, lang }),
     lang,

packages/smooth/src/server/ssr.js

@@ -95,7 +95,8 @@ export default function ssrMiddleware({
     const apolloClient = createApolloClient({
       schema,
       fragmentTypes,
-      context: getContext({ req, config }),
+      context: operation =>
+        getContext({ req, config, operationContext: operation.getContext() }),
     })
 
     let jsx = (