Attempt to solve encoding issue on filename of #102

src/viralhostrange/viralhostrangedb/views.py

@@ -2,6 +2,7 @@ import itertools
 import json
 import os
 import tempfile
+import unicodedata
 
 import pandas as pd
 from basetheme_bootstrap.user_preferences import get_user_preferences_for_user
@@ -842,6 +843,17 @@ def data_source_download(request, pk):
             return response
 
 
+# http://source.mihelac.org/2011/02/6/rename-uploaded-files-ascii-character-set-django/
+class ASCIIFileSystemStorage(storage.FileSystemStorage):
+    """
+    Convert unicode characters in name to ASCII characters.
+    """
+
+    def get_valid_name(self, name):
+        name = unicodedata.normalize('NFKD', name).encode('ascii', 'ignore')
+        return super(ASCIIFileSystemStorage, self).get_valid_name(name)
+
+
 @method_decorator(login_required, name='dispatch')
 class DataSourceWizard(wizard_views.NamedUrlSessionWizardView):
     def get_upload_or_live_input(self):
@@ -874,7 +886,7 @@ class DataSourceWizard(wizard_views.NamedUrlSessionWizardView):
         "Upload": upload_data,
     }
     template_name = 'viralhostrangedb/wizard_form.html'
-    file_storage = storage.FileSystemStorage(location=os.path.join(tempfile.gettempdir(), 'viralhostrangedb_wizard'))
+    file_storage = ASCIIFileSystemStorage(location=os.path.join(tempfile.gettempdir(), 'viralhostrangedb_wizard'))
 
     def get_context_data(self, form, step=None, **kwargs):
         context = super().get_context_data(form=form, step=step, **kwargs)