Ok, I've tried about near everything and I cannot get this to work.
I've written this code about 6 different ways.
The problem I'm running into is all of the code that I'm writing results in the following behavior: (1) Django will make a 2nd file, (2) rename the new file, adding an _ to the end of the file name, then (3) not transfer any of the data over leaving it basically an empty re-named file. What's left in the 'upload_to' path is 2 files, one that is the actual image, and one that is the name of the image,but is empty, and of course the ImageField path is set to the empty file that Django try to create.
In case that was unclear, I'll try to illustrate:
## Image generation code runs....
/Upload
generated_image.jpg 4kb
## Attempt to set the ImageField path...
/Upload
generated_image.jpg 4kb
generated_image_.jpg 0kb
ImageField.Path = /Upload/generated_image_.jpg
How can I do this without having Django try to re-store the file? What I'd really like is something to this effect...
model.ImageField.path = generated_image_path
...but of course that doesn't work.
And yes I've gone through the other questions here like this one as well as the django doc on File
UPDATE After further testing, it only does this behavior when running under Apache on Windows Server. While running under the 'runserver' on XP it does not execute this behavior.
I am stumped.
Here is the code which runs successfully on XP...
f = open(thumb_path, 'r')
model.thumbnail = File(f)
model.save()
This question is related to
python
django
django-models
class Pin(models.Model):
"""Pin Class"""
image_link = models.CharField(max_length=255, null=True, blank=True)
image = models.ImageField(upload_to='images/', blank=True)
title = models.CharField(max_length=255, null=True, blank=True)
source_name = models.CharField(max_length=255, null=True, blank=True)
source_link = models.CharField(max_length=255, null=True, blank=True)
description = models.TextField(null=True, blank=True)
tags = models.ForeignKey(Tag, blank=True, null=True)
def __unicode__(self):
"""Unicode class."""
return unicode(self.image_link)
def save(self, *args, **kwargs):
"""Store image locally if we have a URL"""
if self.image_link and not self.image:
result = urllib.urlretrieve(self.image_link)
self.image.save(os.path.basename(self.image_link), File(open(result[0], 'r')))
self.save()
super(Pin, self).save()
This is might not be the answer you are looking for. but you can use charfield to store the path of the file instead of ImageFile. In that way you can programmatically associate uploaded image to field without recreating the file.
Working! You can save image by using FileSystemStorage. check the example below
def upload_pic(request):
if request.method == 'POST' and request.FILES['photo']:
photo = request.FILES['photo']
name = request.FILES['photo'].name
fs = FileSystemStorage()
##### you can update file saving location too by adding line below #####
fs.base_location = fs.base_location+'/company_coverphotos'
##################
filename = fs.save(name, photo)
uploaded_file_url = fs.url(filename)+'/company_coverphotos'
Profile.objects.filter(user=request.user).update(photo=photo)
A lot of these answers were outdated, and I spent many hours in frustration (I'm fairly new to Django & web dev in general). However, I found this excellent gist by @iambibhas: https://gist.github.com/iambibhas/5051911
import requests
from django.core.files import File
from django.core.files.temp import NamedTemporaryFile
def save_image_from_url(model, url):
r = requests.get(url)
img_temp = NamedTemporaryFile(delete=True)
img_temp.write(r.content)
img_temp.flush()
model.image.save("image.jpg", File(img_temp), save=True)
Here is a method that works well and allows you to convert the file to a certain format as well (to avoid "cannot write mode P as JPEG" error):
import urllib2
from django.core.files.base import ContentFile
from PIL import Image
from StringIO import StringIO
def download_image(name, image, url):
input_file = StringIO(urllib2.urlopen(url).read())
output_file = StringIO()
img = Image.open(input_file)
if img.mode != "RGB":
img = img.convert("RGB")
img.save(output_file, "JPEG")
image.save(name+".jpg", ContentFile(output_file.getvalue()), save=False)
where image is the django ImageField or your_model_instance.image here is a usage example:
p = ProfilePhoto(user=user)
download_image(str(user.id), p.image, image_url)
p.save()
Hope this helps
class tweet_photos(models.Model):
upload_path='absolute path'
image=models.ImageField(upload_to=upload_path)
image_url = models.URLField(null=True, blank=True)
def save(self, *args, **kwargs):
if self.image_url:
import urllib, os
from urlparse import urlparse
file_save_dir = self.upload_path
filename = urlparse(self.image_url).path.split('/')[-1]
urllib.urlretrieve(self.image_url, os.path.join(file_save_dir, filename))
self.image = os.path.join(file_save_dir, filename)
self.image_url = ''
super(tweet_photos, self).save()
With Django 3, with a model such as this one:
class Item(models.Model):
name = models.CharField(max_length=255, unique=True)
photo= models.ImageField(upload_to='image_folder/', blank=True)
if the image has already been uploaded, we can directly do :
Item.objects.filter(...).update(photo='image_folder/sample_photo.png')
or
my_item = Item.objects.get(id=5)
my_item.photo='image_folder/sample_photo.png'
my_item.save()
class DemoImage(models.Model):
title = models.TextField(max_length=255, blank=False)
image = models.ImageField(blank=False, upload_to="images/DemoImages/")
import requests
import urllib.request
from django.core.files import File
url = "https://path/to/logo.jpg"
# Below 3 lines is to fake as browser agent
# as many sites block urllib class suspecting to be bots
opener = urllib.request.build_opener()
opener.addheaders = [("User-agent", "Mozilla/5.0")]
urllib.request.install_opener(opener)
# Issue command to actually download and create temp img file in memory
result = urllib.request.urlretrieve(url)
# DemoImage.objects.create(title="title", image=File(open(result[0], "rb")))
# ^^ This erroneously results in creating the file like
# images/DemoImages/path/to/temp/dir/logo_image_file
# as opposed to
# images/DemoImages/logo_image_file
# Solution to get the file in images/DemoImages/
reopen = open(result[0], "rb") # Returns a BufferedReader object of the temp image
django_file = File(reopen) # Create the file from the BufferedReader object
demoimg = DemoImage()
demoimg.title = "title"
demoimg.image.save("logo.png", django_file, save=True)
This approach also triggers file upload to cloudinary/S3 if so configured
Ok, If all you need to do is associate the already existing image file path with the ImageField, then this solution may be helpfull:
from django.core.files.base import ContentFile
with open('/path/to/already/existing/file') as f:
data = f.read()
# obj.image is the ImageField
obj.image.save('imgfilename.jpg', ContentFile(data))
Well, if be earnest, the already existing image file will not be associated with the ImageField, but the copy of this file will be created in upload_to dir as 'imgfilename.jpg' and will be associated with the ImageField.
So, if you have a model with an imagefield with an upload_to attribute set, such as:
class Avatar(models.Model):
image_file = models.ImageField(upload_to=user_directory_path_avatar)
then it is reasonably easy to change the image, at least in django 3.15.
In the view, when you process the image, you can obtain the image from:
self.request.FILES['avatar']
which is an instance of type InMemoryUploadedFile, as long as your html form has the enctype set and a field for avatar...
<form method="post" class="avatarform" id="avatarform" action="{% url avatar_update_view' %}" enctype="multipart/form-data">
{% csrf_token %}
<input id="avatarUpload" class="d-none" type="file" name="avatar">
</form>
Then, setting the new image in the view is as easy as the following (where profile is the profile model for the self.request.user)
profile.avatar.image_file.save(self.request.FILES['avatar'].name, self.request.FILES['avatar'])
There is no need to save the profile.avatar, the image_field already saves, and into the correct location because of the 'upload_to' callback function.
Your can use Django REST framework and python Requests library to Programmatically saving image to Django ImageField
Here is a Example:
import requests
def upload_image():
# PATH TO DJANGO REST API
url = "http://127.0.0.1:8080/api/gallery/"
# MODEL FIELDS DATA
data = {'first_name': "Rajiv", 'last_name': "Sharma"}
# UPLOAD FILES THROUGH REST API
photo = open('/path/to/photo'), 'rb')
resume = open('/path/to/resume'), 'rb')
files = {'photo': photo, 'resume': resume}
request = requests.post(url, data=data, files=files)
print(request.status_code, request.reason)
Super easy if model hasn't been created yet:
First, copy your image file to the upload path (assumed = 'path/' in following snippet).
Second, use something like:
class Layout(models.Model):
image = models.ImageField('img', upload_to='path/')
layout = Layout()
layout.image = "path/image.png"
layout.save()
tested and working in django 1.4, it might work also for an existing model.
What I did was to create my own storage that will just not save the file to the disk:
from django.core.files.storage import FileSystemStorage
class CustomStorage(FileSystemStorage):
def _open(self, name, mode='rb'):
return File(open(self.path(name), mode))
def _save(self, name, content):
# here, you should implement how the file is to be saved
# like on other machines or something, and return the name of the file.
# In our case, we just return the name, and disable any kind of save
return name
def get_available_name(self, name):
return name
Then, in my models, for my ImageField, I've used the new custom storage:
from custom_storage import CustomStorage
custom_store = CustomStorage()
class Image(models.Model):
thumb = models.ImageField(storage=custom_store, upload_to='/some/path')
Just a little remark. tvon answer works but, if you're working on windows, you probably want to open() the file with 'rb'. Like this:
class CachedImage(models.Model):
url = models.CharField(max_length=255, unique=True)
photo = models.ImageField(upload_to=photo_path, blank=True)
def cache(self):
"""Store image locally if we have a URL"""
if self.url and not self.photo:
result = urllib.urlretrieve(self.url)
self.photo.save(
os.path.basename(self.url),
File(open(result[0], 'rb'))
)
self.save()
or you'll get your file truncated at the first 0x1A byte.
You can try:
model.ImageField.path = os.path.join('/Upload', generated_image_path)
If you want to just "set" the actual filename, without incurring the overhead of loading and re-saving the file (!!), or resorting to using a charfield (!!!), you might want to try something like this --
model_instance.myfile = model_instance.myfile.field.attr_class(model_instance, model_instance.myfile.field, 'my-filename.jpg')
This will light up your model_instance.myfile.url and all the rest of them just as if you'd actually uploaded the file.
Like @t-stone says, what we really want, is to be able to set instance.myfile.path = 'my-filename.jpg', but Django doesn't currently support that.
Another possible way to do that:
from django.core.files import File
with open('path_to_file', 'r') as f: # use 'rb' mode for python3
data = File(f)
model.image.save('filename', data, True)
Source: Stackoverflow.com