Add concept scheme to embedded concepts #295

The concept scheme was not yet added to the embedded concepts for hash uris.
If visiting a hash uri concept scheme directly this resulted in a crash.

cypress/e2e/conceptSchemeAndConcept.cy.js

@@ -64,6 +64,16 @@ describe("Concept Scheme and Concept", () => {
     cy.get("h1").should("have.text", "Hash URI Konzept Schema")
   })
 
+  it("Visting a hash URI Concept Scheme with hash uri in URL works", () => {
+    cy.visit("/example.org/hashURIConceptScheme.html#scheme", {
+      onBeforeLoad(win) {
+        Object.defineProperty(win.navigator, "language", { value: "de-DE" })
+      },
+    })
+    cy.get(".conceptScheme > a").should("have.text", "Hash URI Konzept Schema")
+    cy.get("h1").should("have.text", "Hash URI Konzept Schema")
+  })
+
   it("Visting a hash URI Concept works", () => {
     cy.visit("/example.org/hashURIConceptScheme.html#concept1", {
       onBeforeLoad(win) {

gatsby-node.js

@@ -306,7 +306,14 @@ exports.createPages = async ({ graphql, actions: { createPage } }) => {
         const conceptsInScheme = await graphql(
           queries.allConcept(conceptScheme.id, languages)
         )
-        const embeddedConcepts = []
+        // embed concept scheme data
+        const embeddedConcepts = [
+          {
+            json: omitEmpty(Object.assign({}, conceptScheme, context.jsonld)),
+            jsonld: omitEmpty(Object.assign({}, conceptScheme, context.jsonld)),
+          },
+        ]
+
         conceptsInScheme.data.allConcept.edges.forEach(({ node: concept }) => {
           const json = omitEmpty(Object.assign({}, concept, context.jsonld))
           const jsonld = omitEmpty(Object.assign({}, concept, context.jsonld))

src/components/Concept.jsx

@@ -25,7 +25,8 @@ const Concept = ({
       </h1>
       <h1>
         {concept.notation && <span>{concept.notation.join(",")}&nbsp;</span>}
-        {i18n(language)(concept.prefLabel)}
+        {(concept?.prefLabel && i18n(language)(concept.prefLabel)) ||
+          (concept?.title && i18n(language)(concept.title))}
       </h1>
       <ConceptURI id={concept.id} />
       <JsonLink to={getFilePath(concept.id, "json", customDomain)} />