From 119a83cf3e9443637ff0a90719c5ced7fa4a95d5 Mon Sep 17 00:00:00 2001
From: David Stone <davidjamesstone@gmail.com>
Date: Mon, 9 Feb 2026 14:43:37 +0000
Subject: [PATCH 1/2] Apply a joi.array.min to non-optional file upload fields

---
 src/server/plugins/engine/components/FileUploadField.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/server/plugins/engine/components/FileUploadField.ts b/src/server/plugins/engine/components/FileUploadField.ts
index 4a6ff220c..c1696167f 100644
--- a/src/server/plugins/engine/components/FileUploadField.ts
+++ b/src/server/plugins/engine/components/FileUploadField.ts
@@ -134,6 +134,8 @@ export class FileUploadField extends FormComponent {
 
       if (typeof schema.min === 'number') {
         formSchema = formSchema.min(schema.min)
+      } else if (options.required !== false) {
+        formSchema = formSchema.min(1)
       }
     } else {
       formSchema = formSchema.length(schema.length)

From d3ae9b6a5ae49a5a3d45267c036e9a5c8bbe2dc7 Mon Sep 17 00:00:00 2001
From: davidjamesstone <davidjamesstone@gmail.com>
Date: Wed, 11 Feb 2026 15:55:18 +0000
Subject: [PATCH 2/2] Add test to assert schema applies a default min items for
 the file upload

---
 .../engine/components/FileUploadField.test.ts | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/server/plugins/engine/components/FileUploadField.test.ts b/src/server/plugins/engine/components/FileUploadField.test.ts
index 053b5f1ad..870f75160 100644
--- a/src/server/plugins/engine/components/FileUploadField.test.ts
+++ b/src/server/plugins/engine/components/FileUploadField.test.ts
@@ -648,6 +648,29 @@ describe('FileUploadField', () => {
           }
         ]
       },
+      {
+        description: 'Schema default min',
+        component: {
+          title: 'Example file upload field',
+          name: 'myComponent',
+          type: ComponentType.FileUploadField,
+          options: {},
+          schema: {}
+        } satisfies FileUploadFieldComponent,
+        assertions: [
+          {
+            input: getFormData([]),
+            output: {
+              value: getFormData([]),
+              errors: [
+                expect.objectContaining({
+                  text: 'Example file upload field must contain at least 1 items'
+                })
+              ]
+            }
+          }
+        ]
+      },
       {
         description: 'Schema length',
         component: {