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key_utils

django_spire.metric.domain.key_utils

KEY_MAX_LENGTH = 64 module-attribute

unique_key_from_name

Source code in django_spire/metric/domain/key_utils.py 
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def unique_key_from_name(instance: Model) -> str:
    base = slugify(str(instance.name))[:KEY_MAX_LENGTH] or 'unnamed'
    queryset = instance.__class__._default_manager.filter(key=base)
    if instance.pk:
        queryset = queryset.exclude(pk=instance.pk)

    if not queryset.exists():
        return base

    suffix = 2
    while True:
        candidate = f'{base[: KEY_MAX_LENGTH - len(str(suffix))]}-{suffix}'
        if not instance.__class__._default_manager.filter(key=candidate).exists():
            return candidate
        suffix += 1