I'm probably doing something stupid but this has bugged me all
morning. I have a ModelForm form and a view to add info to a Media
model I have. This works:
class AddPhotoForm(ModelForm):
class Meta:
model = Media
def add_pet_photo(request, pet_id):
pet = Pet.objects.get(id=pet_id)
if request.method == 'POST':
form = AddPhotoForm(data=request.POST, files=request.FILES or
None)
if form.is_valid():
form.save()
return HttpResponseRedirect('/')
else:
form = AddPhotoForm()
return render_to_response('photos/add_photo.html', {'pet': pet,
'form': form }, \
context_instance=RequestContext(request))
However there are certain fields I want to set manually so I tried
this:
class AddPhotoForm(ModelForm):
class Meta:
model = Media
exclude = ('type', 'pet', 'views')
def add_pet_photo(request, pet_id):
pet = Pet.objects.get(id=pet_id)
if request.method == 'POST':
form = AddPhotoForm(data=request.POST, files=request.FILES)
if form.is_valid():
added_photo = form.save(commit=False)
added_photo.pet = pet
added_photo.type = 'P'
added_photo.views = 0 # this is a zero and is used as a
counter
added_photo.save()
return HttpResponseRedirect('/')
else:
form = AddPhotoForm()
return render_to_response('photos/add_photo.html', {'pet': pet,
'form': form }, \
context_instance=RequestContext(request))
However now I get a DoesNotExist exception...
Environment:
Request Method: POST
Request URL: http://127.0.0.1:8000/photos/1/add/
Django Version: 1.0-beta_2-SVN-unknown
Python Version: 2.5.2
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'petcam.main']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.middleware.doc.XViewMiddleware')
Traceback:
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
site-packages/django/core/handlers/base.py" in get_response
86. response = callback(request, *callback_args,
**callback_kwargs)
File "/Users/flynn/Documents/Work/petcam/../petcam/main/views.py" in
add_pet_photo
224. added_photo = form.save(commit=False)
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
site-packages/django/forms/models.py" in save
218. return save_instance(self, self.instance,
self._meta.fields, fail_message, commit)
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
site-packages/django/forms/models.py" in save_instance
43. f.save_form_data(instance, cleaned_data[f.name])
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
site-packages/django/db/models/fields/files.py" in save_form_data
192. getattr(instance, self.name).save(data.name, data,
save=False)
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
site-packages/django/db/models/fields/files.py" in save
217. super(ImageFieldFile, self).save(name, content, save)
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
site-packages/django/db/models/fields/files.py" in save
73. name = self.field.generate_filename(self.instance, name)
File "/Users/flynn/Documents/Work/petcam/../petcam/main/models.py" in
photoDir
140. return os.path.join('pet_photos', str(self.pet.id),
filename)
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/
site-packages/django/db/models/fields/related.py" in __get__
230. raise self.field.rel.to.DoesNotExist
Exception Type: DoesNotExist at /photos/1/add/
Exception Value:
I'm sure I'm doing something wrong, probably with the file uploading
bits but I can't seem to guess what. Do I have to do something special
when I specify commit=False to the form? The only thing I found
regarding this is with a m2m field but I don't have that in this case.
For good measure, here is my Media model:
class Media(models.Model):
"""
Media, should be of type photo or video, I know the names seem to
just indicate photos, will have to work on that.
"""
def photoDir(self, filename):
"Callable method used to set directory of media below"
return os.path.join('pet_photos', str(self.pet.id), filename)
title = models.CharField(max_length=128)
category = models.ForeignKey(Category)
type = models.CharField(max_length=1, choices=(('P', 'Photo'),
('V', 'Video')))
pet = models.ForeignKey(Pet)
image = models.ImageField(upload_to=photoDir)
thumbnail = models.ImageField(upload_to=photoDir, blank=True,
editable=False)
views = models.IntegerField(default=0)
created = models.DateTimeField(editable=False)
updated = models.DateTimeField(editable=False)
def __unicode__(self):
return self.title
def save(self):
if not self.id:
self.created = datetime.datetime.today()
self.views = 0
self.updated = datetime.datetime.today()
self.thumbnail = create_thumbnail(self.image, THUMB_WIDTH,
THUMB_HEIGHT)
super(Media, self).save()
class Meta:
get_latest_by = 'updated'
ordering = ['pet', '-updated']
verbose_name_plural = 'Media'
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