CODEWITHSUNDEEP
djangopython-3.xdjango-rest-framework
Ddota
Ddota

Reputation: 163

Object of type is not JSON serializable

Just started with Django Rest framework and following the great tutorial: https://sunscrapers.com/blog/ultimate-tutorial-django-rest-framework-part-1/

I have created a test model:

models.py

class Test(models.Model):
    name = models.CharField(max_length=100)
    age = models.IntegerField

And to make the object available through the API, I have implemented a serializer. This would serialize to XML, YAML or JSON, the latter is what I am interested in. Below is my serialization class.

serializers.py

class TestSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Test
        fields = ('name', 'age')

app/views.py

class TestViewSet(viewsets.ModelViewSet):
    queryset = models.Test.objects.all()
    serializer_class = serializers.TestSerializer

However, it doesn't seem to serialize to JSON as expected as the error below shows:

File "C:\Program Files\Python38\lib\json\encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type type is not JSON serializable

Worth adding, that it worked for like 2 hours then just went bad.

Upvotes: 0

Views: 7019

Answers (2)

Elijah
Elijah

Reputation: 82

Not sure if this would be useful to anyone but I ran into the same issue and mine was a trailing comma(,) at the end of that line.

Upvotes: 0

Reza
Reza

Reputation: 1124

You missed a pair of parentheses in your Test class's age field:

class Test(models.Model):
    name = models.CharField(max_length=100)
    age = models.IntegerField()  # <-- missed this pair

Upvotes: 2

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