fix broken DRF json renderer

apps/api/renderers.py

@@ -0,0 +1,14 @@
+
+from rest_framework.renderers import JSONRenderer
+
+
+# custom renderer to fix a horrible python json issue, that corrupts large integers
+# issue example: parsing an integer 1204426362794811453 will corrupt the integer into 1204426362794811400.
+class FixedJSONRenderer(JSONRenderer):
+    def render(self, data, *args, **kwargs):
+        if isinstance(data, dict):
+            data = {
+                key: str(value) if isinstance(value, int) and value > 9007199254740991 else value
+                                for key, value in data.items()
+            }
+        return super().render(data, *args, **kwargs)

core/settings.py

@@ -257,5 +257,10 @@ REST_FRAMEWORK = {
         'anon': '100/day',
         'user': '10000/hour'
     },
+    'DEFAULT_RENDERER_CLASSES': [
+        'apps.api.renderers.FixedJSONRenderer',
+        'rest_framework.renderers.AdminRenderer',
+        'rest_framework.renderers.BrowsableAPIRenderer'
+    ],
     "EXCEPTION_HANDLER": "apps.api.exceptions.conflict_exception_handler"
 }