Translate the label of missing facet value

src/client/components/facet_bar/HierarchicalFacet.js

@@ -255,7 +255,11 @@ class HierarchicalFacet extends Component {
     if (this.state.matches.length > 0) {
       isSearchMatch = this.state.matches.some(match => match.node.id === node.id)
     }
-
+    if (node.id === 'http://ldf.fi/MISSING_VALUE') {
+      // Check if there is a translated label for missing value, or use defaults
+      node.prefLabel = intl.get(`perspectives.${this.props.facetClass}.properties.${this.props.facetID}.missingValueLabel`) ||
+        intl.get('facetBar.defaultMissingValueLabel') || 'Unknown'
+    }
     return (
       <>
         <Typography className={isSearchMatch ? this.props.classes.searchMatch : ''} variant='body2'>

src/client/epics/index.js

@@ -376,7 +376,8 @@ const loadLocalesEpic = action$ => action$.pipe(
   mergeMap(async action => {
     await intl.init({
       currentLocale: action.currentLanguage,
-      locales: availableLocales
+      locales: availableLocales,
+      warningHandler: () => null
     })
     return updateLocale({ language: action.currentLanguage })
   })

src/server/sparql/Mappers.js

@@ -178,7 +178,7 @@ const mapFacetValues = sparqlBindings => {
     try {
       return {
         id: b.id.value,
-        prefLabel: b.prefLabel.value,
+        prefLabel: b.prefLabel ? b.prefLabel.value : null,
         selected: b.selected.value,
         parent: b.parent ? b.parent.value : null,
         instanceCount: b.instanceCount.value

src/server/sparql/SparqlQueriesGeneral.js

@@ -84,7 +84,7 @@ export const facetValuesQuery = `
       }
       FILTER(?instanceCount > 0)
       BIND(IRI("http://ldf.fi/MISSING_VALUE") AS ?id)
-      BIND("Unknown" AS ?prefLabel)
+      # prefLabel for <http://ldf.fi/MISSING_VALUE> is given in client/translations
       BIND('0' as ?parent)
       BIND(<UNKNOWN_SELECTED> as ?selected)
     }