I am getting the following error:
'MyProfile' object has no attribute 'get_source_filename'
The following code is from a previously answered SO question, so I'm not sure what get_source_filename() is or does. A google search turned up nothing.
class MyProfile(UserenaBaseProfile):
coverpic = models.ImageField(upload_to="site_media/media/covers/", null=True, blank=True)
def save(self, *args, **kwargs):
# Did we have to resize the image?
# We pop it to remove from kwargs when we pass these along
image_resized = kwargs.pop('image_resized',False)
super(MyProfile, self).save(*args, **kwargs)
if self.coverpic:
print "yes"
basewidth = 300
filename = self.get_source_filename()
image = Image.open(filename)
wpercent = (basewidth/float(image.size[0]))
hsize = int((float(image.size[1])*float(wpercent)))
img = image.resize((basewidth,hsize), PIL.Image.ANTIALIAS)
self.coverpic = img
self.coverpic.save
Related
Hope someone would be able to help me out here.
I am trying to update an image on a table called MyCards, when updating this image the system should then look to see if this image contains certain word, if so then the field points would be increased by one.
But, when trying to update the image I get the following error
{
"image": [
"Upload a valid image. The file you uploaded was either not an image or a corrupted image."
]
}
Not sure how to solve this issue, if anyone could help on it, would be great.
please find here my model, viewset and serializer
MODEL:
class MyCards(models.Model):
profile = models.ForeignKey(AppUserProfile, on_delete=models.CASCADE)
card = models.ForeignKey(Cards, on_delete=models.CASCADE)
points = models.IntegerField(default=0)
image = models.ImageField(upload_to=f'media/app_user/', blank=True)
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
def __str__(self):
return self.card.business.business_name
VIEWSET
class MyCardsViewSet(ModelViewSet):
serializer_class = UpdateMyCardsSerializer
queryset = MyCards.objects.all()
def update(self, request, pk=None, *args, **kwargs):
super().update(request, *args, **kwargs)
x = self.get_object()
img = f"media/{x.image}"
result = pytesseract.image_to_string(img)
if "Petel Chang" in result:
x.points += 1
return self.update(request, *args, **kwargs)
SERIALIZER
class UpdateMyCardsSerializer(serializers.ModelSerializer):
class Meta:
model = MyCards
fields = ('profile', 'card', 'points', 'created', 'updated', 'image')
I'm trying to get image uploads to also save as thumbnails, which works. The problem was when I did an update the custom method saved the thumbnail again in a different directory. so I modified my save function to look like this.
models.py
class Photo(models.Model):
title = models.CharField(max_length=64)
description = models.CharField(max_length=255)
created = models.DateTimeField(auto_now_add=True)
image = models.ImageField(upload_to='photos/%Y%m')
thumbnail = models.ImageField(blank=True, upload_to='thumbnails/%Y%m')
submitter = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
year = models.ForeignKey(Year, blank=True, on_delete=models.CASCADE)
people = TaggableManager(through=TaggedPeople, verbose_name='People')
tags = TaggableManager(through=TaggedGeneric, verbose_name='Tags')
def save(self, *args, **kwargs):
try:
this = Photo.objects.get(id=self.id)
if this.thumbnail != self.thumbnail:
this.thumbnail.delete(save=False)
except:
if self.thumbnail:
img = Image.open(BytesIO(self.thumbnail.read()))
if hasattr(img, '_getexif'):
exif = img._getexif()
if exif:
for tag, label in ExifTags.TAGS.items():
if label == 'Orientation':
orientation = tag
break
if orientation in exif:
if exif[orientation] == 3:
img = img.rotate(180, expand=True)
elif exif[orientation] == 6:
img = img.rotate(270, expand=True)
elif exif[orientation] == 8:
img = img.rotate(90, expand=True)
img.thumbnail((360,360), Image.ANTIALIAS)
output = BytesIO()
img.save(output, format='JPEG', quality=95)
output.seek(0)
self.thumbnail = File(output, self.thumbnail.name)
return super().save(*args, **kwargs)
def __str__(self):
return self.title
and my views
class PhotoCreateView(LoginRequiredMixin, CreateView):
model = Photo
fields = ['image', 'title', 'description', 'year', 'people', 'tags']
template_name = 'photoapp/create.html'
success_url = '/photo/?page=1'
extra_context = {'tags':GenericTag.objects.all().order_by('name'),'people':PeopleTag.objects.all().order_by('name'),}
def form_valid(self, form):
form.instance.thumbnail = self.request.FILES['image']
form.instance.submitter = self.request.user
return super().form_valid(form)
class PhotoUpdateView(LoginRequiredMixin, UpdateView):
template_name = 'photoapp/update.html'
model = Photo
fields = ['title', 'description', 'year', 'people', 'tags']
success_url = '/photo/?page=1'
So the CreateView now works fine, and I have stopped the duplicate thumbnail files, but the UpdateView does not work. How can I fix this?
I figured it out. I just had to add a save to the try section.
def save(self, *args, **kwargs):
try:
this = Photo.objects.get(id=self.id)
if this.thumbnail != self.thumbnail:
this.thumbnail.delete(save=False)
return super().save(*args, **kwargs)
except:
if self.thumbnail:
img = Image.open(BytesIO(self.thumbnail.read()))
if hasattr(img, '_getexif'):
exif = img._getexif()
if exif:
for tag, label in ExifTags.TAGS.items():
if label == 'Orientation':
orientation = tag
break
if orientation in exif:
if exif[orientation] == 3:
img = img.rotate(180, expand=True)
elif exif[orientation] == 6:
img = img.rotate(270, expand=True)
elif exif[orientation] == 8:
img = img.rotate(90, expand=True)
img.thumbnail((360,360), Image.ANTIALIAS)
output = BytesIO()
img.save(output, format='JPEG', quality=95)
output.seek(0)
self.thumbnail = File(output, self.thumbnail.name)
return super().save(*args, **kwargs)
I had a similar complaint in Django-Wagtail, where saving image.save() programmatically duplicated on the file system the imported image. Do get around this I used Python Glob to get the path, and OS to remove the original image after the save function had been loaded. It worked well enough for Wagtail, I wanted to capture the issue for others - as there isn't much on the web about this. It's frustrating, doubles your disk space usage due to this functionality if you aren't careful! I don't like that it renames the files/moves them, but it is what it is.
from django.core.management.base import BaseCommand, CommandError
from wagtail.images.models import Image
from django.core.files.images import ImageFile
import os
from os import path
import glob
#import sqlite3
class Command(BaseCommand):
help = "just a thing to "
def handle(self, *args, **options):
target_path = "/home/inmyth/inmyth/media/images/"
my_images = []
if os.path.exists(target_path):
my_images = glob.glob(target_path + "*.png")
for mj_imgs in my_images:
print(mj_imgs)
image_file = ImageFile(open(mj_imgs, 'rb'), name=mj_imgs[:-4])
img_label = mj_imgs.rfind("/") + 1
image = Image(title=mj_imgs[img_label:-4], file=image_file)
image.save()
os.remove(mj_imgs)
pass
I am using the django-resized package to resize the image.
When I upload a PNG file using this package, the extension is changed to apng.
I don't want this extension to change..
Other image files are normally uploaded.
What should I fix it?
Background
- django==2.1.5
- django-resized==0.3.9
When use Django's default model.ImageField, the extension of png does not change.
# models.py
def upload_to(instance, filename):
return 'vip/{username}/{filename}'.format(
username=instance.whose.whose.username, filename=filename)
class VipIndex(models.Model):
whose = models.OneToOneField(Profile, on_delete=models.CASCADE, related_name='vipindex')
main_big_image = ResizedImageField(crop=['middle', 'center'], size=[500, 300], quality=50, blank=True, upload_to=upload_to)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
class Meta:
ordering = ['-created_at']
# forms.py
class VipMainForm(forms.ModelForm):
class Meta:
model = VipIndex
fields = (
'main_big_image',
)
def __init__(self, *args, **kwargs):
super(VipMainForm, self).__init__(*args, **kwargs)
self.fields['main_big_image'].widget.attrs = {'autocomplete': 'off', 'class': 'form-control'}
# views.py
#login_required
def profile_2(request):
if request.method == 'POST':
form_main = VipMainForm(request.POST, request.FILES)
if form_main.is_valid():
nav = form_main.save(commit=False)
nav.whose = request.user.profiles
nav.save()
return redirect('profile_2')
else:
form_main = VipMainForm()
return render(request, 'accounts/profile_2.html', {
'form_main':form_main,
})
Are there specific settings to keep the extension of the png file?
Add the following to settings.py
DJANGORESIZED_DEFAULT_FORMAT_EXTENSIONS = {'PNG': ".png"}
and it will override saving the file as .apng
I need to display the png transparent image in the frontend but am unable to format it correctly.
i have tried to change the format to png but it is rendering a black background to it.
class HelpCategories(models.Model):
Name1 = (
('Getting Started','Getting Started'),
('Pricing','Pricing'),
('Integration','Integration'),
('Security','Security'),
('Product Professionals','Product Professionals'),
('About Products','About Products'),
)
Title = models.CharField(max_length=40, default='Getting Started')
image = ImageField(upload_to='help_image', null=True, blank=True)
def __str__(self):
return self.Title
def save(self, *args, **kwargs):
if self.image:
imageTemporary = Image.open(self.image).convert('RGB')
outputIoStream = BytesIO()
imageTemporaryResized = imageTemporary.resize((400,400))
imageTemporaryResized.save(outputIoStream, format='PNG', quality=300)
outputIoStream.seek(0)
self.image = InMemoryUploadedFile(outputIoStream,'ImageField', "%s.png" % self.image.name.split('.')[0], 'image/png', sys.getsizeof(outputIoStream), None)
super(HelpCategories, self).save(*args, **kwargs)
I need to be able to see only the image object in the template.
As a follow up to my eariler question I have a new one. How can I save this calculated value as a model field. I would like to use it in my views and templates to order list by this field.
My models:
class Tournament(models.Model):
name = models.CharField(max_length=100)
date = models.DateTimeField('date')
player_num = models.IntegerField(verbose_name="")
points = models.FloatField(default=1000.00)
def get_rating(self):
return self.points / 1000.00
class TournamentStandings(models.Model):
tournament = models.ForeignKey(Tournament, on_delete=models.CASCADE)
player = models.ForeignKey(Player, on_delete=models.CASCADE)
player_place = models.FloatField(verbose_name=u"")
player_points = models.FloatField(verbose_name="",
blank=True) #added for testing to save the calculated value in it
#property
def get_player_points(self, obj):
return obj.tournament.player_num * obj.tournament.get_rating() -
obj.tournament.get_rating()*(obj.player_place - 1.00)
def save(self, *args, **kwargs):
self.player_points = self.get_player_points
super(TournamentStandings, self).save(*args, **kwargs)
def __float__(self):
return self.player_points
Funny as on the admin list I have a column where player_points are calculated correctly but when I add a new model instance and try to save it I get this error : 'TournamentStandings' object has no attribute 'get_player_points'. Is it bacause I am trying to do a "self" save and my calculation is (self, obj) ?? Any hints are wellcome.
Posting a working solution to my problem. No need for parentheses.
First I have fixed Tournament model, so I could save get_rating as a field:
class Tournament(models.Model):
name = models.CharField(max_length=100)
rating = models.FloatField(verbose_name="Rating", blank=True)
#property
def get_rating(self):
return (self.points) / (1000.00)
def save(self, *args, **kwargs):
self.rating = self.get_rating
super(Tournament, self).save(*args, **kwargs)
def __float__(self):
return self.rating
When I had this I tried to copy it to second model. Problem was that I could not get it to work due to related obj I was calling in my calculation. But! I have managed to assign this values to variables inside get_player_points and now all is working as intended:
class TournamentStandings(models.Model):
tournament = models.ForeignKey(Tournament, on_delete=models.CASCADE)
player = models.ForeignKey(Player, on_delete=models.CASCADE)
player_place = models.FloatField(verbose_name="")
player_points = models.FloatField(verbose_name="", blank=True)
#property
def get_player_points(self):
player_num = float(self.tournament.player_num)
rating = float(self.tournament.rating)
player_points = float(rating*player_num-rating*(self.player_place - 1.00))
return player_points
def save(self, *args, **kwargs):
self.player_points = self.get_player_points
super(TournamentStandings, self).save(*args, **kwargs)
def __float__(self):
return self.player_points
And this works! Any thoughts on improvements I could make are wellcome ofc.
get_player_points() is a method and requires parentheses.
def save(self, *args, **kwargs):
self.player_points = self.get_player_points()