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Minor tweaks for helpful message on Model.objects.create() failure.
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@ -35,7 +35,6 @@ from rest_framework.validators import (
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)
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import copy
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import inspect
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import sys
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import warnings
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# Note: We do the following so that users of the framework can use this style:
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@ -658,14 +657,20 @@ class ModelSerializer(Serializer):
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instance = ModelClass.objects.create(**validated_attrs)
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except TypeError as exc:
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msg = (
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'The mentioned argument might be a field on the serializer '
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'that is not part of the model. You need to override the '
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'create() method in your ModelSerializer subclass to support '
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'this.')
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six.reraise(
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type(exc),
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type(exc)(str(exc) + '. ' + msg),
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sys.exc_info()[2])
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'Got a `TypeError` when calling `%s.objects.create()`. '
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'This may be because you have a writable field on the '
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'serializer class that is not a valid argument to '
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'`%s.objects.create()`. You may need to make the field '
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'read-only, or override the %s.create() method to handle '
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'this correctly.\nOriginal exception text was: %s.' %
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(
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ModelClass.__name__,
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ModelClass.__name__,
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self.__class__.__name__,
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exc
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)
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)
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raise TypeError(msg)
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# Save many-to-many relationships after the instance is created.
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if many_to_many:
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@ -10,7 +10,6 @@ from django.core.validators import MaxValueValidator, MinValueValidator, MinLeng
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from django.db import models
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from django.test import TestCase
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from rest_framework import serializers
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import pytest
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def dedent(blocktext):
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@ -87,13 +86,10 @@ class TestModelSerializer(TestCase):
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'non_model_field': 'bar',
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})
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serializer.is_valid()
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with pytest.raises(TypeError):
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with self.assertRaises(TypeError) as excinfo:
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serializer.save()
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try:
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serializer.save()
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except TypeError as exc:
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assert 'ModelSerializer' in str(exc)
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msginitial = 'Got a `TypeError` when calling `OneFieldModel.objects.create()`.'
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assert str(excinfo.exception).startswith(msginitial)
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class TestRegularFieldMappings(TestCase):
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