fix: convert Django BigIntegerField to BigInt GraphQL type (#1318)

Co-authored-by: Thomas Leonard <thomas@loftorbital.com>

Author: tcleonard

graphene_django/converter.py

@@ -24,6 +24,7 @@
     Decimal,
 )
 from graphene.types.json import JSONString
+from graphene.types.scalars import BigInt
 from graphene.utils.str_converters import to_camel_case
 from graphql import GraphQLError, assert_valid_name
 from graphql.pyutils import register_description
@@ -186,10 +187,14 @@ def convert_field_to_uuid(field, registry=None):
     )
 
 
+@convert_django_field.register(models.BigIntegerField)
+def convert_big_int_field(field, registry=None):
+    return BigInt(description=field.help_text, required=not field.null)
+
+
 @convert_django_field.register(models.PositiveIntegerField)
 @convert_django_field.register(models.PositiveSmallIntegerField)
 @convert_django_field.register(models.SmallIntegerField)
-@convert_django_field.register(models.BigIntegerField)
 @convert_django_field.register(models.IntegerField)
 def convert_field_to_int(field, registry=None):
     return Int(description=get_django_field_description(field), required=not field.null)

graphene_django/tests/test_converter.py

@@ -10,6 +10,7 @@
 from graphene.relay import ConnectionField, Node
 from graphene.types.datetime import Date, DateTime, Time
 from graphene.types.json import JSONString
+from graphene.types.scalars import BigInt
 
 from ..compat import (
     ArrayField,
@@ -140,8 +141,8 @@ def test_should_small_integer_convert_int():
     assert_conversion(models.SmallIntegerField, graphene.Int)
 
 
-def test_should_big_integer_convert_int():
-    assert_conversion(models.BigIntegerField, graphene.Int)
+def test_should_big_integer_convert_big_int():
+    assert_conversion(models.BigIntegerField, BigInt)
 
 
 def test_should_integer_convert_int():