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83 lines
3.0 KiB
Python
83 lines
3.0 KiB
Python
from datetime import datetime
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from django.db import models
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from django.core.exceptions import ValidationError
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from django.utils.translation import gettext_lazy as _
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from decimal import Decimal, ROUND_HALF_DOWN
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import unicodedata
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def file_size_validator(max_upload_size):
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"""
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Returns a function checking if the supplied file has file size less or equal
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than `max_upload_size` in MB.
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"""
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def check_file_size(value):
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limit = max_upload_size * 1024 * 1024
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if value.size > limit:
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raise ValidationError(_('Please keep filesize under {} MiB. '
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'Current filesize: '
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'{:10.2f} MiB.').format(max_upload_size,
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value.size / 1024 / 1024))
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return check_file_size
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class RestrictedFileField(models.FileField):
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def __init__(self, *args, **kwargs):
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if "max_upload_size" in kwargs:
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self.max_upload_size = kwargs.pop("max_upload_size")
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else:
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self.max_upload_size = None
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if "content_types" in kwargs:
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self.content_types = kwargs.pop("content_types")
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else:
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self.content_types = None
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super(RestrictedFileField, self).__init__(*args, **kwargs)
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self.validators = [file_size_validator(self.max_upload_size)]
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def clean(self, *args, **kwargs):
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data = super(RestrictedFileField, self).clean(*args, **kwargs)
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f = data.file
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try:
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content_type = f.content_type
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if self.content_types is not None and content_type not in self.content_types:
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raise ValidationError(_('Filetype not supported.'))
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if self.max_upload_size is not None and f._size > self.max_upload_size:
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raise ValidationError(_('Please keep filesize under {}. '
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'Current filesize: '
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'{}').format(self.max_upload_size,
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f._size))
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except AttributeError as e:
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print(e)
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return data
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def cvt_to_decimal(f):
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return Decimal(f).quantize(Decimal('.01'), rounding=ROUND_HALF_DOWN)
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def get_member(request):
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if not hasattr(request.user, 'member'):
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return None
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else:
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return request.user.member
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def normalize_name(raw, nospaces=True, noumlaut=True):
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if noumlaut:
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raw = raw.replace('ö', 'oe').replace('ä', 'ae').replace('ü', 'ue')
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if nospaces:
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raw = raw.replace(' ', '_')
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return unicodedata.normalize('NFKD', raw).encode('ascii', 'ignore').decode('ascii')
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def normalize_filename(filename, append_date=True, date=None):
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if append_date and not date:
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date = datetime.today()
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if date:
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filename = filename + "_" + date.strftime("%d_%m_%Y")
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filename = filename.replace(' ', '_').replace('&', '').replace('/', '_')
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# drop umlauts, accents etc.
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return unicodedata.normalize('NFKD', filename).encode('ASCII', 'ignore').decode()
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