update to django 3.0 & asgi

bots/utils.py

@@ -1,3 +1,9 @@
+import json
+
+from django.core import serializers
+from django.core.exceptions import ImproperlyConfigured
+from django.core.serializers.json import DjangoJSONEncoder
+from django.http import HttpResponse
 from django.views.generic import TemplateView
 
 from bots.forms import BotForm
@@ -38,4 +44,83 @@ class BaseBotConfigView(CabinetViewMixin, TemplateView):
         ctx = super(BaseBotConfigView, self).get_context_data(**kwargs)
         ctx['bot_form'], ctx['config_form'] = self.get_forms() if forms is None else forms
         ctx['bot_module'] = self.get_content_type().model_class()
-        return ctx
+        return ctx
+
+
+# django-braces
+class AjaxResponseMixin(object):
+    """
+    Mixin allows you to define alternative methods for ajax requests. Similar
+    to the normal get, post, and put methods, you can use get_ajax, post_ajax,
+    and put_ajax.
+    """
+    def dispatch(self, request, *args, **kwargs):
+        request_method = request.method.lower()
+
+        if request.is_ajax() and request_method in self.http_method_names:
+            handler = getattr(self, "{0}_ajax".format(request_method),
+                              self.http_method_not_allowed)
+            self.request = request
+            self.args = args
+            self.kwargs = kwargs
+            return handler(request, *args, **kwargs)
+
+        return super(AjaxResponseMixin, self).dispatch(
+            request, *args, **kwargs)
+
+    def get_ajax(self, request, *args, **kwargs):
+        return self.get(request, *args, **kwargs)
+
+    def post_ajax(self, request, *args, **kwargs):
+        return self.post(request, *args, **kwargs)
+
+    def put_ajax(self, request, *args, **kwargs):
+        return self.get(request, *args, **kwargs)
+
+    def delete_ajax(self, request, *args, **kwargs):
+        return self.get(request, *args, **kwargs)
+
+
+class JSONResponseMixin(object):
+    """
+    A mixin that allows you to easily serialize simple data such as a dict or
+    Django models.
+    """
+    content_type = None
+    json_dumps_kwargs = None
+    json_encoder_class = DjangoJSONEncoder
+
+    def get_content_type(self):
+        if self.content_type is not None and not isinstance(self.content_type, str):
+            raise ImproperlyConfigured(
+                '{0} is missing a content type. Define {0}.content_type, '
+                'or override {0}.get_content_type().'.format(
+                    self.__class__.__name__))
+        return self.content_type or "application/json"
+
+    def get_json_dumps_kwargs(self):
+        if self.json_dumps_kwargs is None:
+            self.json_dumps_kwargs = {}
+        self.json_dumps_kwargs.setdefault('ensure_ascii', False)
+        return self.json_dumps_kwargs
+
+    def render_json_response(self, context_dict, status=200):
+        """
+        Limited serialization for shipping plain data. Do not use for models
+        or other complex or custom objects.
+        """
+        json_context = json.dumps(
+            context_dict,
+            cls=self.json_encoder_class,
+            **self.get_json_dumps_kwargs()).encode('utf-8')
+        return HttpResponse(json_context,
+                            content_type=self.get_content_type(),
+                            status=status)
+
+    def render_json_object_response(self, objects, **kwargs):
+        """
+        Serializes objects using Django's builtin JSON serializer. Additional
+        kwargs can be used the same way for django.core.serializers.serialize.
+        """
+        json_data = serializers.serialize("json", objects, **kwargs)
+        return HttpResponse(json_data, content_type=self.get_content_type())

bots/views.py

@@ -1,4 +1,3 @@
-from braces.views import AjaxResponseMixin, JSONResponseMixin
 from django.contrib import messages
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.contenttypes.models import ContentType
@@ -15,7 +14,7 @@ from jsonrpc import JSONRPCResponseManager
 
 from bots.models import TelegramBot
 from bots.modules import BOT_MODULES
-from bots.utils import BaseBotConfigView
+from bots.utils import BaseBotConfigView, JSONResponseMixin, AjaxResponseMixin
 from cabinet.utils import CabinetViewMixin
 from config.utils import AllowCORSMixin