30 lines
730 B
Python
30 lines
730 B
Python
"""Slug."""
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# standard
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import re
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# local
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from .utils import validator
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@validator
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def slug(value: str, /):
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"""Validate whether or not given value is valid slug.
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Valid slug can contain only lowercase alphanumeric characters and hyphens.
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It starts and ends with these lowercase alphanumeric characters.
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Examples:
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>>> slug('my-slug-2134')
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True
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>>> slug('my.slug')
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ValidationError(func=slug, args={'value': 'my.slug'})
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Args:
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value: Slug string to validate.
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Returns:
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(Literal[True]): If `value` is a valid slug.
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(ValidationError): If `value` is an invalid slug.
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"""
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return re.match(r"^[a-z0-9]+(?:-[a-z0-9]+)*$", value) if value else False
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