Consistently interpolate conceptUuid URL parameter in SelectConceptAnswersDatasource (#474)

Author: samuelmale

src/datasources/select-concept-answers-datasource.ts

@@ -1,15 +1,25 @@
-import { openmrsFetch, restBaseUrl } from '@openmrs/esm-framework';
+import { openmrsFetch, OpenmrsResource, restBaseUrl } from '@openmrs/esm-framework';
 import { BaseOpenMRSDataSource } from './data-source';
 
 export class SelectConceptAnswersDatasource extends BaseOpenMRSDataSource {
   constructor() {
-    super(`${restBaseUrl}/concept/conceptUuid?v=custom:(uuid,setMembers:(uuid,display),answers:(uuid,display))`);
+    super(
+      `${restBaseUrl}/concept/:conceptUuid?v=custom:(uuid,display,setMembers:(uuid,display),answers:(uuid,display))`,
+    );
+  }
+
+  fetchSingleItem(uuid: string): Promise<OpenmrsResource | null> {
+    return openmrsFetch(this.buildUrl(uuid)).then(({ data }) => data);
   }
 
   fetchData(searchTerm: string, config?: Record<string, any>): Promise<any[]> {
-    const apiUrl = this.url.replace('conceptUuid', config.referencedValue || config.concept);
+    const apiUrl = this.buildUrl(config.referencedValue || config.concept);
     return openmrsFetch(apiUrl).then(({ data }) => {
       return data['setMembers'].length ? data['setMembers'] : data['answers'];
     });
   }
+
+  private buildUrl(conceptUuid: string): string {
+    return this.url.replace(':conceptUuid', conceptUuid);
+  }
 }