allow tags to contain chars, not only English alphabet (#801)

* allow tags to contain chars, not only English alphabet

files/helpers.py

@@ -785,3 +785,11 @@ def clean_query(query):
         query = query.replace(char, "")
 
     return query.lower()
+
+
+def get_alphanumeric_only(string):
+    """Returns a query that contains only alphanumeric characters
+    This include characters other than the English alphabet too
+    """
+    string = "".join([char for char in string if char.isalnum()])
+    return string.lower()

files/models.py

@@ -16,7 +16,6 @@ from django.core.files import File
 from django.db import connection, models
 from django.db.models.signals import m2m_changed, post_delete, post_save, pre_delete
 from django.dispatch import receiver
-from django.template.defaultfilters import slugify
 from django.urls import reverse
 from django.utils import timezone
 from django.utils.html import strip_tags
@@ -1000,10 +999,8 @@ class Tag(models.Model):
         return True
 
     def save(self, *args, **kwargs):
-        self.title = slugify(self.title[:99])
-        strip_text_items = ["title"]
-        for item in strip_text_items:
-            setattr(self, item, strip_tags(getattr(self, item, None)))
+        self.title = helpers.get_alphanumeric_only(self.title)
+        self.title = self.title[:99]
         super(Tag, self).save(*args, **kwargs)
 
     @property

files/views.py

@@ -9,7 +9,6 @@ from django.core.mail import EmailMessage
 from django.db.models import Q
 from django.http import HttpResponseRedirect
 from django.shortcuts import get_object_or_404, render
-from django.template.defaultfilters import slugify
 from drf_yasg import openapi as openapi
 from drf_yasg.utils import swagger_auto_schema
 from rest_framework import permissions, status
@@ -30,7 +29,7 @@ from cms.permissions import IsAuthorizedToAdd, IsUserOrEditor, user_allowed_to_u
 from users.models import User
 
 from .forms import ContactForm, MediaForm, SubtitleForm
-from .helpers import clean_query, produce_ffmpeg_commands
+from .helpers import clean_query, get_alphanumeric_only, produce_ffmpeg_commands
 from .methods import (
     check_comment_for_mention,
     get_user_or_session,
@@ -182,7 +181,8 @@ def edit_media(request):
                 media.tags.remove(tag)
             if form.cleaned_data.get("new_tags"):
                 for tag in form.cleaned_data.get("new_tags").split(","):
-                    tag = slugify(tag)
+                    tag = get_alphanumeric_only(tag)
+                    tag = tag[:99]
                     if tag:
                         try:
                             tag = Tag.objects.get(title=tag)