40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
from typing import Any
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from typing import Dict
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from typing import Tuple
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from django.db import models
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from django.utils.translation import gettext_lazy as _
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from . import ShortUUID
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class ShortUUIDField(models.CharField):
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description = _("A short UUID field.")
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def __init__(self, *args: Any, **kwargs: Any) -> None:
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self.length: int = kwargs.pop("length", 22) # type: ignore
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self.prefix: str = kwargs.pop("prefix", "") # type: ignore
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if "max_length" not in kwargs:
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# If `max_length` was not specified, set it here.
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kwargs["max_length"] = self.length + len(self.prefix) # type: ignore
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self.alphabet: str = kwargs.pop("alphabet", None) # type: ignore
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kwargs["default"] = self._generate_uuid # type: ignore
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super().__init__(*args, **kwargs)
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def _generate_uuid(self) -> str:
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"""Generate a short random string."""
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return self.prefix + ShortUUID(alphabet=self.alphabet).random(
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length=self.length
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)
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def deconstruct(self) -> Tuple[str, str, Tuple, Dict[str, Any]]:
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name, path, args, kwargs = super().deconstruct()
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kwargs["alphabet"] = self.alphabet
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kwargs["length"] = self.length
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kwargs["prefix"] = self.prefix
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kwargs.pop("default", None)
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return name, path, args, kwargs
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