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utils/tools/__init__.py

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+from .inline_serializer import inline_serializer
+from .inline_model_serializer import inline_model_serializer

utils/tools/inline_model_serializer.py

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+from rest_framework import serializers
+
+
+def create_model_serializer_class(name, meta_fields, fields=None):
+    if fields:
+        meta = type('Meta', (), {'fields': meta_fields} if meta_fields else {})
+        return type(name, (serializers.ModelSerializer,), {'Meta': meta, **fields})
+    else:
+        meta = type('Meta', (), {'fields': meta_fields} if meta_fields else {})
+        return type(name, (serializers.ModelSerializer,), {'Meta': meta})
+
+
+def inline_model_serializer(*, meta_fields, fields=None, data=None, **kwargs):
+
+    serializer_class = create_model_serializer_class(name="inline_model_serializer", fields=fields, meta_fields=meta_fields)
+
+    if data is not None:
+        return serializer_class(data=data, **kwargs)
+
+    return serializer_class(**kwargs)

utils/tools/inline_serializer.py

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+from rest_framework import serializers
+
+
+def create_serializer_class(name, fields):
+    return type(name, (serializers.Serializer,), fields)
+
+
+def inline_serializer(*, fields, data=None, **kwargs):
+    # Important note if you are using `drf-spectacular`
+    # Please refer to the following issue:
+    # https://github.com/HackSoftware/Django-Styleguide/issues/105#issuecomment-1669468898
+    # Since you might need to use unique names (uuids) for each inline serializer
+    serializer_class = create_serializer_class(name="inline_serializer", fields=fields)
+
+    if data is not None:
+        return serializer_class(data=data, **kwargs)
+
+    return serializer_class(**kwargs)