extra_kwargs arguments

I want to set up minimum length to password value. I looked for this argument but just got confused. Here is my steps to understand.

Where is the code defined the password?

I didn't define the password in the User model. I set up on serializer.

class UserSerializer(serializers.ModelSerializer):

    class Meta:

        model = get_user_model()

        fields = ['name', 'email', 'password']

        extra_kwargs = {'password': {'write_only': True}}

If I want to set the password minimum length,

I think extra_kwargs is also a kind of field. And you can see the documentation.

|,

There are common arguments - Core arguments.

And we can see arguments each field types.

I want to set minimum length of password, it belongs to Charfield. Let's go to the Charfield list.

Signature: CharField(max_length=None, min_length=None, allow_blank=False, trim_whitespace=True)

CharField

Now I find min_length argument! I'm going to set this on my code!

class UserSerializer(serializers.ModelSerializer):

    class Meta:

        model = get_user_model()

        fields = ['name', 'email', 'password']

        extra_kwargs = {'password': {'write_only': True, 'min_length': 5}}

It's hard to comprehend the documents right away. But we just need time, we can solve it!

Now I'm happy!