Access Django Model primary key

Hi,

I would like to do something like this:

allIngredients {
  edges {
    node {
      id
      pk
      name
    }
  }
}

where the result would be something like this:

{
  "id": "Q29tcGFueU5vZGU6MQ==",
  "pk": 42,
  "name": "carrots"
}

Is this possible? How could it be achieved?

Perhaps relatedly, how could I expose model properties?

Thanks!

[bcb]

Can I just clarify - so id retrieves the primary key, unless the Node interface is used in which case it’s the relay node id?

[syrusakbary]

The id retrieves automatically the Primary Key in the Django Model instance by default, as @bcb pointed.

You can expose model properties by creating a field for the property. For example, if your Model looks something like:

# Here the Django Model
class MyModel(models.Model):
    first_name = models.CharField(max_length=100)
    last_name = models.CharField(max_length=100)
    @property
    def full_name(self):
        return "{} {}".format(self.first_name, self.last_name)

# Here the Graphene Type
class MyModelType(DjangoObjectType):
    class Meta:
        # This will automatically convert the first_name and last_name fields to GraphQL fields
        model = MyModel

     full_name = graphene.String()
     # If we don't specify the resolver, it will try to resolve using the instance.full_name