Ytukyg

I would like to know how to properly create mutation for creating this django model:

class Company(models.Model):



    class Meta:

        db_table = 'companies'

        app_label = 'core'

        default_permissions = ()



    name = models.CharField(unique=True, max_length=50, null=False)

    email = models.EmailField(unique=True, null=False)

    phone_number = models.CharField(max_length=13, null=True)

    address = models.TextField(max_length=100, null=False)

    crn = models.CharField(max_length=20, null=False)

    tax = models.CharField(max_length=20, null=False)

    parent = models.ForeignKey('self', null=True, on_delete=models.CASCADE)

    currency = models.ForeignKey(Currency, null=False, on_delete=models.CASCADE)

    country = models.ForeignKey(Country, null=False, on_delete=models.CASCADE)

    created_at = models.DateTimeField(auto_now_add=True)

    updated_at = models.DateTimeField(auto_now=True)

As you see, there are three Foreign keys. For model Currency, Country and Parent(self). Company DjangoObjectType looks very simple like this:

class CompanyType(DjangoObjectType):

    class Meta:

        model = Company

And finally my mutation class CreateCompany have Currency, Country and Self(Parent) defined like graphene.Field():

class CompanyInput(graphene.InputObjectType):

    name = graphene.String(required=True)

    email = graphene.String(required=True)

    address = graphene.String(required=True)

    crn = graphene.String(required=True)

    tax = graphene.String(required=True)

    currency = graphene.Field(CurrencyType)

    country = graphene.Field(CountryType)

    parent = graphene.Field(CompanyType)

    phone_number = graphene.String()





class CreateCompany(graphene.Mutation):

    company = graphene.Field(CompanyType)



    class Arguments:

        company_data = CompanyInput(required=True)



    @staticmethod

    def mutate(root, info, company_data):

        company = Company.objects.create(**company_data)

        return CreateCompany(company=company)

When i want to start django server, Assertion error will be raised.

AssertionError: CompanyInput.currency field type must be Input Type but got: CurrencyType.

I was finding some good tutorial for one to many foreign key for a long time, so if someone know how to implement this solution nice and clear I would be very glad.

PS: Please can you also show me example of GraphQL query, so I would know how to call that mutation? Thank you very much.