Peter Bengtsson wrote:
> Sadly this means that if a user tries to upload a 11Mb file you won't
> be able to confront them with a user-friendly "error" message.
>
It's pretty straightforward to subclass django.forms.fields.FileField to
apply a size limit in clean(), or perhaps just do the check in your
form's clean() However, that way only checks when the upload itself has
already taken place to temporary storage. That still means you can
disallow uploaded files above a certain size being saved to more
permanent storage though, which may well be adequate.
Something like:
from django.forms import fields
class SizedFileField(fields.FileField):
default_error_messages = {
'large_file': u"File exceeds size limit.",
}
def __init__(self, *args, **kwargs):
self.max_filesize = kwargs.pop('max_filesize', None)
super(SizedFileField, self).__init__(*args, **kwargs)
def clean(self, data, initial=None):
f = super(SizedFileField, self).clean(data, initial)
if f is None:
return None
elif not data and initial:
return initial
if self.max_filesize:
if data.size > self.max_filesize:
raise fields.ValidationError(
self.error_messages['large_file'])
return f
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