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26 lines
1.0 KiB
Python
26 lines
1.0 KiB
Python
class BaseDatabaseValidation:
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"""Encapsulate backend-specific validation."""
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def __init__(self, connection):
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self.connection = connection
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def check(self, **kwargs):
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return []
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def check_field(self, field, **kwargs):
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errors = []
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# Backends may implement a check_field_type() method.
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if (hasattr(self, 'check_field_type') and
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# Ignore any related fields.
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not getattr(field, 'remote_field', None)):
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# Ignore fields with unsupported features.
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db_supports_all_required_features = all(
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getattr(self.connection.features, feature, False)
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for feature in field.model._meta.required_db_features
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)
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if db_supports_all_required_features:
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field_type = field.db_type(self.connection)
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# Ignore non-concrete fields.
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if field_type is not None:
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errors.extend(self.check_field_type(field, field_type))
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return errors
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