Update file forms.py

photologue/forms.py

@@ -16,8 +16,9 @@ from .models import Gallery, Tag
 class MultipleFileInput(forms.ClearableFileInput):
     allow_multiple_selected = True
 
-
 class MultipleFileField(forms.FileField):
+    allowed_extensions = ['jpg', 'jpeg', 'png','gif', 'tiff']  # Specify allowed extensions here
+
     def __init__(self, *args, **kwargs):
         kwargs.setdefault(
             "widget",
@@ -32,12 +33,27 @@ class MultipleFileField(forms.FileField):
 
     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]
+            result = [self.validate_file(d, single_file_clean, initial) for d in data]
         else:
-            result = single_file_clean(data, initial)
+            result = self.validate_file(data, single_file_clean, initial)
         return result
 
+    def validate_file(self, file, single_file_clean, initial):
+        # Perform the default clean
+        cleaned_file = single_file_clean(file, initial)
+
+        # Check the file extension
+        extension = file.name.split('.')[-1].lower()
+        if extension not in self.allowed_extensions:
+            raise forms.ValidationError(
+                f"{file.name} has an invalid file extension. "
+                f"Allowed extensions are: {', '.join(self.allowed_extensions)}"
+            )
+        return cleaned_file
+
+
 
 class UploadForm(forms.Form):
     file_field = MultipleFileField(label="")