Re: issues with file upload
finished
sorry, I clone the new source( for review) but use an old source on python
environment
在 2012年8月21日星期二UTC+8下午6时36分46秒，软刀写道：
>
>
> I now work with mongoengine, mongoForm
> and set this in setting.py
> DEFAULT_FILE_STORAGE = 'mongoengine.django.storage.GridFSStorage'
>
> I need to upload a picture, and I wrote a form like this:
>
> from django.forms import ImageField
>
> from mongoforms import MongoForm
> from documents import UserProfile
>
> class ProfileForm(MongoForm):
> photo = ImageField()
> class Meta:
> document = UserProfile
> exclude = ('user', 'photo')
>
> but I get a Invalid Image Error when I submit a picture( how ever, it's ok
> when I use PIL.Image.open(photo).verify() )
> I review the code, and found the exception was raise on
> django.forms.fields.ImageField.to_python method
> code snippet for to_python method:
> def to_python(self, data):
>
>if hasattr(data, 'temporary_file_path'):
> file = data.temporary_file_path()
>
>try:
> Image.open(file).verify()
> except ImportError:
> raise
> except Exception: # Python Imaging Library doesn't recognize it as
> an image
> raise ValidationError(self.error_messages['invalid_image'])
> ...
>
>well, I don't know well to set temporary_file_path and how to
> storage it with mongoengine.django.storage.GridFSStorage
>
>
> # this was snippet for class ImageField
> def to_python(self, data):
> """
> Checks that the file-upload field data contains a valid image
> (GIF, JPG,
> PNG, possibly others -- whatever the Python Imaging Library
> supports).
> """
> f = super(ImageField, self).to_python(data)
> if f is None:
> return None
>
> # Try to import PIL in either of the two ways it can end up
> installed.
> try:
> from PIL import Image
> except ImportError:
> import Image
>
> # We need to get a file object for PIL. We might have a path or we
> might
> # have to read the data into memory.
> if hasattr(data, 'temporary_file_path'):
> file = data.temporary_file_path()
> else:
> if hasattr(data, 'read'):
> file = StringIO(data.read())
> else:
> file = StringIO(data['content'])
>
> try:
> # load() could spot a truncated JPEG, but it loads the entire
> # image in memory, which is a DoS vector. See #3848 and #18520.
> # verify() must be called immediately after the constructor.
> Image.open(file).verify()
> except ImportError:
> # Under PyPy, it is possible to import PIL. However, the
> underlying
> # _imaging C module isn't available, so an ImportError will be
> # raised. Catch and re-raise.
> raise
> except Exception: # Python Imaging Library doesn't recognize it as
> an image
> raise ValidationError(self.error_messages['invalid_image'])
> if hasattr(f, 'seek') and callable(f.seek):
> f.seek(0)
> return f
>
>
>
>
> this was exception stack
>
> Environment:
>
>
> Request Method: POST
> Request URL: http://localhost:8000/accounts/profile/
>
> Django Version: 1.4
> Python Version: 2.7.3
> Installed Applications:
> ['django.contrib.auth',
> 'django.contrib.contenttypes',
> 'django.contrib.sessions',
> 'django.contrib.messages',
> 'django.contrib.staticfiles',
> 'registration',
> 'bussiness',
> 'accounts',
> 'debug_toolbar']
> Installed Middleware:
> ['django.middleware.common.CommonMiddleware',
> 'django.contrib.sessions.middleware.SessionMiddleware',
> 'django.middleware.csrf.CsrfViewMiddleware',
> 'django.contrib.auth.middleware.AuthenticationMiddleware',
> 'django.contrib.messages.middleware.MessageMiddleware',
> 'debug_toolbar.middleware.DebugToolbarMiddleware']
>
>
> Traceback:
> File
> "/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/core/handlers/base.py"
>
> in get_response
> 111.
issues with file upload
I now work with mongoengine, mongoForm
and set this in setting.py
DEFAULT_FILE_STORAGE = 'mongoengine.django.storage.GridFSStorage'
I need to upload a picture, and I wrote a form like this:
from django.forms import ImageField
from mongoforms import MongoForm
from documents import UserProfile
class ProfileForm(MongoForm):
photo = ImageField()
class Meta:
document = UserProfile
exclude = ('user', 'photo')
but I get a Invalid Image Error when I submit a picture( how ever, it's ok
when I use PIL.Image.open(photo).verify() )
I review the code, and found the exception was raise on
django.forms.fields.ImageField.to_python method
code snippet for to_python method:
def to_python(self, data):
if hasattr(data, 'temporary_file_path'):
file = data.temporary_file_path()
try:
Image.open(file).verify()
except ImportError:
raise
except Exception: # Python Imaging Library doesn't recognize it as
an image
raise ValidationError(self.error_messages['invalid_image'])
...
well, I don't know well to set temporary_file_path and how to
storage it with mongoengine.django.storage.GridFSStorage
# this was snippet for class ImageField
def to_python(self, data):
"""
Checks that the file-upload field data contains a valid image (GIF,
JPG,
PNG, possibly others -- whatever the Python Imaging Library
supports).
"""
f = super(ImageField, self).to_python(data)
if f is None:
return None
# Try to import PIL in either of the two ways it can end up
installed.
try:
from PIL import Image
except ImportError:
import Image
# We need to get a file object for PIL. We might have a path or we
might
# have to read the data into memory.
if hasattr(data, 'temporary_file_path'):
file = data.temporary_file_path()
else:
if hasattr(data, 'read'):
file = StringIO(data.read())
else:
file = StringIO(data['content'])
try:
# load() could spot a truncated JPEG, but it loads the entire
# image in memory, which is a DoS vector. See #3848 and #18520.
# verify() must be called immediately after the constructor.
Image.open(file).verify()
except ImportError:
# Under PyPy, it is possible to import PIL. However, the
underlying
# _imaging C module isn't available, so an ImportError will be
# raised. Catch and re-raise.
raise
except Exception: # Python Imaging Library doesn't recognize it as
an image
raise ValidationError(self.error_messages['invalid_image'])
if hasattr(f, 'seek') and callable(f.seek):
f.seek(0)
return f
this was exception stack
Environment:
Request Method: POST
Request URL: http://localhost:8000/accounts/profile/
Django Version: 1.4
Python Version: 2.7.3
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'registration',
'bussiness',
'accounts',
'debug_toolbar']
Installed Middleware:
['django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'debug_toolbar.middleware.DebugToolbarMiddleware']
Traceback:
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/core/handlers/base.py"
in get_response
111. response = callback(request, *callback_args,
**callback_kwargs)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py"
in _wrapped_view
20. return view_func(request, *args, **kwargs)
File "/home/yan/git/haoyoubang/accounts/views.py" in profile
31. processFile(request.FILES['photo'])
File "/home/yan/git/haoyoubang/accounts/views.py" in processFile
21. s = f.clean(photo)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/forms/fields.py"
in clean
535. return super(FileField, self).clean(data)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/forms/fields.py"
in clean
153. value = self.to_python(value)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/forms/fields.py"
in to_python
593. raise
ValidationError(self.error_messages['invalid_image'])
Exception Type: ValidationError at /accounts/profile/
Exception Value:
[u'\u8bf7\u4e0a\u4f20\u4e00\u5f20\u6709\u6548\u7684\u56fe\u
Re: Django, nginx, Passenger
is proxy_send_timeout too small ? I newer 2012/3/3 赵帅 > I suggest you do a pressure test on the url that have triggered the > problem to see whether it will show up again.If yes, to see the system > status such as the number of sockets being used and the number of > connections from nginx to fastcgi service in the status of waiting to be > accepted. > > > 2012/3/3 Daniele Procida > >> We're having a devil of a time with our new server, which went live >> yesterday after two months of testing. >> >> Every so often, nginx will display a 502 gateway error page, and >> something like this will appear in the logs: >> >> 2012/03/02 18:05:38 [error] 29743#0: *1479 upstream prematurely closed >> connection while reading response header from upstream, client: >> nn.nn.nn.nn, server: nn.nn.nn.nn, request: "GET /some/path/ HTTP/1.1", >> upstream: "passenger:unix:/passenger_helper_server:", host: "example.com" >> >> This only occurs on some pages, but once it has happened on a page, it >> seems to keep happening. >> >> It doesn't happen straight away - the server can run happily for some >> time before the errors start occurring. >> >> The pages that trigger the error don't seem to be particularly hard work >> for the server. However, the same pages can be expected to trigger it, >> while some never do. >> >> Merely restarting nginx doesn't get rid of the errors - they come back >> again. >> >> As soon as DEBUG = True is applied in settings and nginx restarted, the >> errors disappear. >> >> Some things that seem to have improved matters: >> >> * increasing somaxconn to 1024 >> * turning off cacheing >> >> In fact after turning off cacheing it was some hours before the errors >> returned. >> >> We are running nginx, with a passenger_wsgi.py file setting up the path >> and pointing to the settings.py file. >> >> I'd appeciate any tips on what the problem might be, or how to go about >> isolating it. >> >> Obviously an error that occurs under heavy load is not unusual, though I >> don't think the load is particualrly heavy (and this server has taken over >> from one rather less powerful that has been doing the same job for two >> years). >> >> What is puzzling is the error that occurs only on particular apparently >> arbitrary pages, and then persists, even after the load conditions (we were >> using ApacheBench to test) have disappeared. >> >> Daniele >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To post to this group, send email to django-users@googlegroups.com. >> To unsubscribe from this group, send email to >> django-users+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/django-users?hl=en. >> >> > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-users@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > -- as I learning english, any help about english grammar is welcome -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: Please help me with django form 2.
as I unflod your code
I think may be you should create a Form-class like this:
class RegisterForm(ModelForm):
class Meta:
model = Register
and in your view should be:
@csrf_exempt
def welcome(request):
if request.method=='POST':
form=RegisterForm(request.POST)
new_user=form.save()
return HttpResponseRedirect('/logpage/')
else:
form=RegisterForm()
return render_to_response('mainpage.html', {'form':form})
--
as I learning english, any help about english grammar is welcome
--
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Re: sorting of foreign key elements
may be attribute ModelAdmin.ordering can work for you , it was in docs/ref/contrib/admin/index.txt attribute:: ModelAdmin.ordering Set ordering to spcify how lists of objects should be ordered in the Django admin views. This should be a list or tuple in the same format as a models's django.db.models.Options.ordering parameter If this isn't provided, the Django admin will use the models's default ordering -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: question about django-admin.py
I don't know why u get this I run it well maybe u can reinstall it -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
how to change form field in method is_valid()
I have two model
class Friend(models.Model):
me = models.ForeignKey(User)
friend = models.ForeignKey(User)
remark = models.CharField(max_length=15)
def __unicode__(self):
return self.remark
class Message(models.Model):
from_user = models.ForeignKey(User)
to_user = models.ForeignKey(User)
...
I make a form for Message
class MessageForm(ModelForm):
class Meta:
model = Message
but when i display the form in html, i hope i display to_user's choice
list just by 'remark' ( in Friend model)
and I override MessageForm 's __init__ method like follow:
class MessageForm(ModelForm):
class Meta:
model = Message
def __init__(self,*args,**kwargs):
super(MessageForm, self).__init__(*args,**kwargs)
init = kwargs.get('initial')
if init:
if 'from_user' in init:
me = init['from_user']
self.fields['to_user'].queryset =
Friend.objects.filter(me=me)
well when the data post, the form.is_valid() raise error : Cannot
assign "": "Message.to_user" must be a "User" instance.
so i want to change self.fields['to_user'] 's value before is_valid()
is call like:
def is_valid(self):
# do something to fix the problem
super(MessageForm, self).is_valid()
but I don't know how to fix it
any suggestion is welcome
thks
I don't know how to do it ,
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