X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/f1b5cd61a3b431bd37b1fc7becb21672fcc28513..1b9ba95da190a11d915fc910b62fdfc9d6dca356:/apps/wiki/forms.py

diff --git a/apps/wiki/forms.py b/apps/wiki/forms.py
index 3cf5d11c..df6bf85e 100644
--- a/apps/wiki/forms.py
+++ b/apps/wiki/forms.py
@@ -84,8 +84,12 @@ class DocumentTextSaveForm(forms.Form):
                 raise ValidationError('Invalid cover image format, should be an image file (jpg, png, gif, svg). '
                                       'Change it in Metadata.')
         metadata = metadata_from_text(text)
+        if 'multiple_values' in metadata:
+            raise ValidationError('Category "%s" does not allow multiple values.' % metadata['multiple_values'])
         for category in Category.objects.all():
             values = metadata.get(category.dc_tag)
+            if values is None:
+                continue
             if not category.multiple:
                 values = [values]
             if not values: