52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
from base import BaseField, ValidationError
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from document import EmbeddedDocument
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import re
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__all__ = ['StringField', 'IntField', 'ValidationError']
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class StringField(BaseField):
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"""A unicode string field.
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"""
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def __init__(self, regex=None, max_length=None, **kwargs):
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self.regex = re.compile(regex) if regex else None
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self.max_length = max_length
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BaseField.__init__(self, **kwargs)
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def _validate(self, value):
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if self.max_length is not None and len(value) > self.max_length:
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raise ValidationError('String value is too long')
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if self.regex is not None and self.regex.match(value) is None:
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message = 'String value did not match validation regex'
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raise ValidationError(message)
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class IntField(BaseField):
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"""An integer field.
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"""
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def __init__(self, min_value=None, max_value=None, **kwargs):
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self.min_value, self.max_value = min_value, max_value
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BaseField.__init__(self, **kwargs)
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def _to_python(self, value):
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return int(value)
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def _validate(self, value):
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if self.min_value is not None and value < self.min_value:
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raise ValidationError('Integer value is too small')
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if self.max_value is not None and value > self.max_value:
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raise ValidationError('Integer value is too large')
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class EmbeddedDocumentField(BaseField):
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"""An embedded document field. Only valid values are subclasses of
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EmbeddedDocument.
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"""
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pass
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