Fixing an issue with deleting DS+ - also making sure if no screens/children found it correctly displays the pre-empt error.

packages/backend-core/src/docIds/params.ts

@@ -8,6 +8,10 @@ import {
 import { getProdAppID } from "./conversions"
 import { DatabaseQueryOpts, VirtualDocumentType } from "@budibase/types"
 
+const EXTERNAL_TABLE_ID_REGEX = new RegExp(
+  `^${DocumentType.DATASOURCE_PLUS}_(.+)__(.+)$`
+)
+
 /**
  * If creating DB allDocs/query params with only a single top level ID this can be used, this
  * is usually the case as most of our docs are top level e.g. tables, automations, users and so on.
@@ -64,6 +68,11 @@ export function getQueryIndex(viewName: ViewName) {
   return `database/${viewName}`
 }
 
+export const isExternalTableId = (id: string): boolean => {
+  const matches = id.match(EXTERNAL_TABLE_ID_REGEX)
+  return !!id && matches !== null
+}
+
 /**
  * Check if a given ID is that of a table.
  */
@@ -72,7 +81,7 @@ export const isTableId = (id: string): boolean => {
   return (
     !!id &&
     (id.startsWith(`${DocumentType.TABLE}${SEPARATOR}`) ||
-      id.startsWith(`${DocumentType.DATASOURCE_PLUS}${SEPARATOR}`))
+      isExternalTableId(id))
   )
 }
 

packages/builder/src/components/backend/modals/DeleteDataConfirmationModal.svelte

@@ -151,6 +151,8 @@
     const screenCount = affectedScreens.length
     let message = `Removing ${source?.name} `
     let initialLength = message.length
+    const hasChanged = () => message.length !== initialLength
+
     if (sourceType === SourceType.TABLE) {
       const views = "views" in source ? Object.values(source?.views ?? []) : []
       message += `will delete its data${
@@ -169,10 +171,10 @@
         initialLength !== message.length
           ? ", and break connected screens:"
           : "will break connected screens:"
-    } else {
+    } else if (hasChanged()) {
       message += "."
     }
-    return message.length !== initialLength ? message : ""
+    return hasChanged() ? message : ""
   }
 </script>