41 lines
1.1 KiB
Python
41 lines
1.1 KiB
Python
# -*- coding: utf-8 -*-
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from django.utils import baseconv
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from django.template.defaultfilters import slugify
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import time
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def slugify_uniquely(value, model, slugfield="slug"):
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"""
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Returns a slug on a name which is unique within a model's table
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"""
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suffix = 0
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potential = base = slugify(value)
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if len(potential) == 0:
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potential = 'null'
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while True:
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if suffix:
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potential = "-".join([base, str(suffix)])
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if not model.objects.filter(**{slugfield: potential}).count():
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return potential
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suffix += 1
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def ref_uniquely(project, model, field='ref'):
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"""
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Returns a unique reference code based on base64 and time.
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"""
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# this prevents concurrent and inconsistent references.
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time.sleep(0.001)
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new_timestamp = lambda: int("".join(str(time.time()).split(".")))
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while True:
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potential = baseconv.base62.encode(new_timestamp())
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params = {field: potential, 'project': project}
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if not model.objects.filter(**params).exists():
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return potential
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time.sleep(0.0002)
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