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22 lines
627 B
Python
22 lines
627 B
Python
import json
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from app import db
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class ContainerColumn(db.TypeDecorator):
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impl = db.String
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def __init__(self, container_type, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.container_type = container_type
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def process_bind_param(self, value, dialect):
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if isinstance(value, self.container_type):
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return json.dumps(value)
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elif isinstance(value, str) and isinstance(json.loads(value), self.container_type):
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return value
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else:
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return TypeError()
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def process_result_value(self, value, dialect):
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return json.loads(value)
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