allow passing noninitialized *filesystem.File values

core/field_file.go

@@ -732,12 +732,16 @@ func (f *FileField) toSliceValue(raw any) []any {
 	case nil:
 		// nothing to cast
 	case *filesystem.File:
-		result = append(result, value)
+		if value != nil {
+			result = append(result, value)
+		}
 	case filesystem.File:
 		result = append(result, &value)
 	case []*filesystem.File:
 		for _, v := range value {
-			result = append(result, v)
+			if v != nil {
+				result = append(result, v)
+			}
 		}
 	case []filesystem.File:
 		for _, v := range value {

core/field_file_test.go

@@ -103,6 +103,8 @@ func TestFileFieldPrepareValue(t *testing.T) {
 		t.Fatal(err)
 	}
 
+	var nilFile *filesystem.File
+
 	scenarios := []struct {
 		raw      any
 		field    *core.FileField
@@ -114,8 +116,9 @@ func TestFileFieldPrepareValue(t *testing.T) {
 		{123, &core.FileField{MaxSelect: 1}, `"123"`},
 		{"a", &core.FileField{MaxSelect: 1}, `"a"`},
 		{`["a"]`, &core.FileField{MaxSelect: 1}, `"a"`},
-		{*f1, &core.FileField{MaxSelect: 1}, string(f1Raw)},
 		{f1, &core.FileField{MaxSelect: 1}, string(f1Raw)},
+		{*f1, &core.FileField{MaxSelect: 1}, string(f1Raw)},
+		{nilFile, &core.FileField{MaxSelect: 1}, `""`},
 		{[]string{}, &core.FileField{MaxSelect: 1}, `""`},
 		{[]string{"a", "b"}, &core.FileField{MaxSelect: 1}, `"b"`},
 
@@ -126,8 +129,9 @@ func TestFileFieldPrepareValue(t *testing.T) {
 		{"a", &core.FileField{MaxSelect: 2}, `["a"]`},
 		{`["a"]`, &core.FileField{MaxSelect: 2}, `["a"]`},
 		{[]any{f1}, &core.FileField{MaxSelect: 2}, `[` + string(f1Raw) + `]`},
-		{[]*filesystem.File{f1}, &core.FileField{MaxSelect: 2}, `[` + string(f1Raw) + `]`},
 		{[]filesystem.File{*f1}, &core.FileField{MaxSelect: 2}, `[` + string(f1Raw) + `]`},
+		{[]*filesystem.File{f1}, &core.FileField{MaxSelect: 2}, `[` + string(f1Raw) + `]`},
+		{[]any{nilFile, f1}, &core.FileField{MaxSelect: 2}, `[` + string(f1Raw) + `]`},
 		{[]string{}, &core.FileField{MaxSelect: 2}, `[]`},
 		{[]string{"a", "b", "c"}, &core.FileField{MaxSelect: 2}, `["a","b","c"]`},
 	}