From b352690ccab57f68c97a2c1de7fb32f89989428a Mon Sep 17 00:00:00 2001
From: Samuel <samuel@atmire.com>
Date: Tue, 28 Jan 2020 15:35:55 +0100
Subject: [PATCH] Virtual metadata on item delete - filter relationship types
 without relationships

---
 .../item-delete/item-delete.component.ts      | 21 ++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/app/+item-page/edit-item-page/item-delete/item-delete.component.ts b/src/app/+item-page/edit-item-page/item-delete/item-delete.component.ts
index d427ce2b34..6fe44c109b 100644
--- a/src/app/+item-page/edit-item-page/item-delete/item-delete.component.ts
+++ b/src/app/+item-page/edit-item-page/item-delete/item-delete.component.ts
@@ -107,13 +107,20 @@ export class ItemDeleteComponent
       getSucceededRemoteData(),
       getRemoteDataPayload(),
       map((relationshipTypes) => relationshipTypes.page),
-      map((types) => types.reduce<RelationshipType[]>((includedTypes, type) => {
-        if (!includedTypes.some((includedType) => includedType.id === type.id)) {
-          return [...includedTypes, type];
-        } else {
-          return includedTypes;
-        }
-      }, [])),
+      switchMap((types) =>
+        combineLatest(types.map((type) => this.getRelationships(type))).pipe(
+          map((relationships) =>
+            types.reduce<RelationshipType[]>((includedTypes, type, index) => {
+              if (!includedTypes.some((includedType) => includedType.id === type.id)
+                && !(relationships[index].length === 0)) {
+                return [...includedTypes, type];
+              } else {
+                return includedTypes;
+              }
+            }, [])
+          ),
+        )
+      ),
     );
 
     this.types$.pipe(