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import json
from graphql import Undefined
from graphql.language.ast import StringValueNode
from .scalars import Scalar
class JSONString(Scalar):
"""
Allows use of a JSON String for input / output from the GraphQL schema.
Use of this type is *not recommended* as you lose the benefits of having a defined, static
schema (one of the key benefits of GraphQL).
"""
@staticmethod
def serialize(dt):
return json.dumps(dt)
@staticmethod
def parse_literal(node, _variables=None):
if isinstance(node, StringValueNode):
try:
return json.loads(node.value)
except Exception as error:
raise ValueError(f"Badly formed JSONString: {str(error)}")
return Undefined
@staticmethod
def parse_value(value):
return json.loads(value)
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