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Make Decimal type return None if parsing an empty string #1360

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Make Decimal type return None if parsing an empty string #1360

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3d61af8
allow Decimal type to return None for empty string
asnoeyink Aug 25, 2021
9b0aa5d
remove unnecessary required=False from test
asnoeyink Aug 25, 2021
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2 changes: 2 additions & 0 deletions graphene/types/decimal.py
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,8 @@ def parse_literal(cls, node):

@staticmethod
def parse_value(value):
if value == "":
return None
try:
return _Decimal(value)
except ValueError:
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7 changes: 7 additions & 0 deletions graphene/types/tests/test_decimal.py
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Expand Up @@ -49,3 +49,10 @@ def test_decimal_string_query_integer():
assert not result.errors
assert result.data == {"decimal": str(decimal_value)}
assert decimal.Decimal(result.data["decimal"]) == decimal_value

def test_parse_decimal_empty_string():
"""Parsing an empty string should return None"""
result = schema.execute("""{ decimal(input: \"\") }""")
assert not result.errors
assert result.data == {"decimal": None}