From 9cc931acc4e12d8ef85d543080cb281a8fb7276e Mon Sep 17 00:00:00 2001
From: Mel O'Hagan <mel@budibase.com>
Date: Wed, 21 Sep 2022 09:10:31 +0100
Subject: [PATCH] Do not allow non-match type primary foreign keys

---
 .../Datasources/CreateEditRelationship.svelte       | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/packages/builder/src/components/backend/Datasources/CreateEditRelationship.svelte b/packages/builder/src/components/backend/Datasources/CreateEditRelationship.svelte
index 990aa736f6..eb78975b8b 100644
--- a/packages/builder/src/components/backend/Datasources/CreateEditRelationship.svelte
+++ b/packages/builder/src/components/backend/Datasources/CreateEditRelationship.svelte
@@ -90,6 +90,19 @@
     if (inSchema(toTable, toRelate.name, originalToName)) {
       errObj.toCol = colError
     }
+    if (
+      fromPrimary &&
+      fromRelate.fieldName &&
+      plusTables.filter(table => table.name === fromTable?.name)[0]?.schema[
+        fromPrimary
+      ]?.type !==
+        plusTables.filter(table => table.name === toTable?.name)[0]?.schema[
+          fromRelate.fieldName
+        ]?.type
+    ) {
+      errObj.foreign =
+        "Column type of the foreign key must match the primary key"
+    }
     errors = errObj
   }