refactor file response

requirements/base.txt

@@ -69,7 +69,6 @@ envvars==0.3.0
 psycopg2==2.6
 django-redis==4.8.0
 redis==2.10.5
-trans==2.1.0
 python-decouple==3.0
 numpy==1.13.0
 django-cleanup==1.0.0

src/commons/pdf_tools.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+import urllib
+import urllib.parse
 from io import BytesIO
-from trans import trans
 from xhtml2pdf import pisa
 from django.template.loader import get_template
 from django.template import Context
@@ -14,10 +15,9 @@ def pdf_to_response(content, filename=None):
     """
     response = HttpResponse(content, content_type='application/pdf')
     if filename:
-        filename = filename.replace('"', "''")
-        filename = filename.replace('№', 'N')
-        filename = trans(filename)
-        response['Content-Disposition'] = ('attachment; filename="{}"'.format(filename))
+        filename = filename.encode('utf-8')
+        filename_part = "filename*=UTF-8''%s" % urllib.parse.quote(filename)
+        response['Content-Disposition'] = 'attachment; ' + filename_part
     return response
 
 

src/commons/xls/xls_to_response.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-from trans import trans
+import urllib
+import urllib.parse
 from django.http import HttpResponse
 
 
@@ -9,8 +10,7 @@ def xls_to_response(content, filename=None):
     """
     response = HttpResponse(content, content_type='application/ms-excel')
     if filename:
-        filename = filename.replace('"', "''")
-        filename = filename.replace('№', 'N')
-        filename = trans(filename)
-        response['Content-Disposition'] = 'attachment; filename="{}"'.format(filename)
+        filename = filename.encode('utf-8')
+        filename_part = "filename*=UTF-8''%s" % urllib.parse.quote(filename)
+        response['Content-Disposition'] = 'attachment; ' + filename_part
     return response