Django image upload issue - django

Question

I'm trying to upload an image. This is an avatar image for the profile of the user.
Currently, the form return no error, but I have nothing written on my database or in my folder media/avatar/.
What's wrong ?
My view :
def view_avatar(request):
if request.method == 'POST':
form = UploadFileForm(request.POST, request.FILES, instance=request.user.profile)
if form.is_valid():
form.save()
else:
form = UploadFileForm(instance=request.user.profile)
return render(request, 'avatar.html', locals())
My form :
class UploadFileForm(forms.ModelForm):
class Meta:
model = Profile
fields = ('avatar',)
My model :
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
birthdate = models.DateField(null=True, blank=True)
avatar = models.ImageField(upload_to='media/avatar/', blank=True, null=True)

Answer 1

It's because the form which you are using is inherited from forms.Form , you need to use forms.ModelForm for saving the instance directly.
Change this line,
class UploadFileForm(forms.ModelForm):
class Meta:
model = Profile
fields = ('avatar', )
def save(self, *args, **kwargs):
profile, created = Profile.objects.get_or_create(user=self.user)
profile.avatar = self.cleaned_data['avatar']
profile.save()
return profile
Also, edit in your views like this,
if form.is_valid():
file = form.save(commit=False)
file.user = request.user
file.save()

Answer 2

For making a profile you can use signals.
This way whenever a new user been added, a profile will be generated for that user automatically
Your models.py:
from django.conf import settings
from django.db.models.signals import post_save
class Profile(models.Model):
user = models.OneToOneField(settings.AUTH_USER_MODEL)
birthdate = models.DateField(null=True, blank=True)
avatar = models.ImageField(upload_to='media/avatar/%y/%m/%d', blank=True, null=True)
def post_save_profile(sender, instance, created, *args, **kwargs):
if created:
try:
Profile.objects.create(user=instance)
except:
pass
post_save.connect(post_save_profile, sender=settings.AUTH_USER_MODEL)
and for updating the information like birthday and avatar you can use ModelForm.
forms.py:
class UploadFileForm(forms.ModelForm):
class Meta:
model = Profile
fields = ('birthdate', 'avatar')
def __init__(self, *args, **kwargs):
super(UploadFileForm, self).__init__(*args, **kwargs)
self.fields['avatar'].required = False
your views.py:
def view_avatar(request):
user = request.user
if request.method == "POST":
form = UploadFileForm(request.POST, request.FILES, instance=user.profile)
if form.is_valid():
form.save()
for avatar in template you can use this:
<img src="{% if user.profile.avatar %}{{ user.profile.avatar.url }}{% else %}{% static 'no-avatar.jpg' %}{% endif %}"><i></i>

Answer 3

You can write custom Save method for this like this.
View:
def view_avatar(request):
if request.method == 'POST':
form = UploadFileForm(request.POST, request.FILES, user=request.user)
if form.is_valid():
form.save()
else:
form = UploadFileForm()
return render(request, 'avatar.html', locals())
Form:
class UploadFileForm(forms.Form):
class Meta:
model = Profile
fields = ('avatar', )
def __init__(self, *args, **kwargs):
self.user = kwargs.pop('user', None)
super(UploadFileForm, self).__init__(*args, **kwargs)
self.fields['avatar'].required = False
avatar = forms.FileField()
def save(self, *args, **kwargs):
user_profile, created = Profile.objects.get_or_create(user=self.user)
user_profile.avatar = self.cleaned_data.get('avatar')
user_profile.save()
return user_profile

Answer 4

I forgot the enctype !
The solution was :
<form method="POST" action="" enctype="multipart/form-data">