Fix multiple files upload

photologue/forms.py

@@ -13,17 +13,34 @@ from django.utils.translation import gettext_lazy as _
 from .models import Gallery, Tag
 
 
+class MultipleFileInput(forms.ClearableFileInput):
+    allow_multiple_selected = True
+
+
+class MultipleFileField(forms.FileField):
+    def __init__(self, *args, **kwargs):
+        kwargs.setdefault(
+            "widget",
+            MultipleFileInput(
+                attrs={
+                    "accept": "image/*",
+                    "class": "mb-3",
+                }
+            ),
+        )
+        super().__init__(*args, **kwargs)
+
+    def clean(self, data, initial=None):
+        single_file_clean = super().clean
+        if isinstance(data, (list, tuple)):
+            result = [single_file_clean(d, initial) for d in data]
+        else:
+            result = single_file_clean(data, initial)
+        return result
+
+
 class UploadForm(forms.Form):
-    file_field = forms.FileField(
-        label="",
-        widget=forms.FileInput(
-            attrs={
-                "accept": "image/*",
-                "multiple": True,
-                "class": "mb-3",
-            }
-        ),
-    )
+    file_field = MultipleFileField(label="")
     gallery = forms.ModelChoiceField(
         Gallery.objects.all(),
         label=_("Gallery"),