I'm been working on this Photo Organizer and Sharing App Part I at http://lightbird.net/dbe/photo.html. I'm trying to generate a thumbnail and when I do . I get this error.
I have Windows Vista.
IOError at /admin/photo/image/add/
(13, 'Permission denied')
Request Method: POST
Request URL: http://127.0.0.1:8000/admin/photo/image/add/
Django Version: 1.4.3
Exception Type: IOError
Exception Value: (13, 'Permission denied')
Exception Location:C:\Python26\lib\site-packages\PIL\Image.py in save, line 1399
Python Executable:C:\Python26\python.exe
Python Version: 2.6.0
Python Path:
['C:\\djcode\\mysite',
'C:\\Python26\\python26.zip',
'C:\\Python26\\DLLs',
'C:\\Python26\\lib',
'C:\\Python26\\lib\\plat-win',
'C:\\Python26\\lib\\lib-tk',
'C:\\Python26',
'C:\\Python26\\lib\\site-packages',
'C:\\Python26\\lib\\site-packages\\PIL']
Server time: Sun, 10 Feb 2013 23:49:34 +1100
My models.py
is
from django.db import models
from django.contrib.auth.models import User
from django.contrib import admin
from string import join
from django.core.files import File
from os.path import join as pjoin
from tempfile import *
import os
from PIL import Image as PImage
from mysite.settings import MEDIA_ROOT
class Album(models.Model):
title = models.CharField(max_length=60)
public = models.BooleanField(default=False)
def __unicode__(self):
return self.title
class Tag(models.Model):
tag = models.CharField(max_length=50)
def __unicode__(self):
return self.tag
class Image(models.Model):
title = models.CharField(max_length=60, blank=True, null=True)
image = models.FileField(upload_to="images/")
tags = models.ManyToManyField(Tag, blank=True)
albums = models.ManyToManyField(Album, blank=True)
created = models.DateTimeField(auto_now_add=True)
rating = models.IntegerField(default=50)
width = models.IntegerField(blank=True, null=True)
height = models.IntegerField(blank=True, null=True)
user = models.ForeignKey(User, null=True, blank=True)
thumbnail2 = models.ImageField(upload_to="images/", blank=True, null=True)
def __unicode__(self):
return self.image.name
def save(self, *args, **kwargs):
"""Save image dimensions."""
super(Image, self).save(*args, **kwargs)
im = PImage.open(pjoin(MEDIA_ROOT, self.image.name))
self.width, self.height = im.size
# large thumbnail
fn, ext = os.path.splitext(self.image.name)
im.thumbnail((128,128), PImage.ANTIALIAS)
thumb_fn = fn + "-thumb2" + ext
tf2 = NamedTemporaryFile()
im.save(tf2.name, "JPEG")
self.thumbnail2.save(thumb_fn, File(open(tf2.name)), save=False)
tf2.close()
# small thumbnail
im.thumbnail((40,40), PImage.ANTIALIAS)
thumb_fn = fn + "-thumb" + ext
tf = NamedTemporaryFile()
im.save(tf.name, "JPEG")
self.thumbnail.save(thumb_fn, File(open(tf.name)), save=False)
tf.close()
super(Image, self).save(*args, ** kwargs)
def size(self):
"""Image size."""
return "%s x %s" % (self.width, self.height)
def __unicode__(self):
return self.image.name
def tags_(self):
lst = [x[1] for x in self.tags.values_list()]
return str(join(lst, ', '))
def albums_(self):
lst = [x[1] for x in self.albums.values_list()]
return str(join(lst, ', '))
def thumbnail(self):
return """<a href="/media/%s"><img border="0" alt="" src="/media/%s" height="40" /></a>""" % (
(self.image.name, self.image.name))
thumbnail.allow_tags = True
class AlbumAdmin(admin.ModelAdmin):
search_fields = ["title"]
list_display = ["title"]
class TagAdmin(admin.ModelAdmin):
list_display = ["tag"]
class ImageAdmin(admin.ModelAdmin):
search_fields = ["title"]
list_display = ["__unicode__", "title", "user", "rating", "size", "tags_", "albums_","thumbnail", "created"]
list_filter = ["tags", "albums"]
def save_model(self, request, obj, form, change):
obj.user = request.user
obj.save()
The problem is here:
from django.core.files import File
from os.path import join as pjoin
from tempfile import *
class Image(models.Model):
# ...
thumbnail2 = models.ImageField(upload_to="images/", blank=True, null=True)
def save(self, *args, **kwargs):
"""Save image dimensions."""
super(Image, self).save(*args, **kwargs)
im = PImage.open(pjoin(MEDIA_ROOT, self.image.name))
self.width, self.height = im.size
# large thumbnail
fn, ext = os.path.splitext(self.image.name)
im.thumbnail((128,128), PImage.ANTIALIAS)
thumb_fn = fn + "-thumb2" + ext
tf2 = NamedTemporaryFile()
im.save(tf2.name, "JPEG")
self.thumbnail2.save(thumb_fn, File(open(tf2.name)), save=False)
tf2.close()
# small thumbnail
im.thumbnail((40,40), PImage.ANTIALIAS)
thumb_fn = fn + "-thumb" + ext
tf = NamedTemporaryFile()
im.save(tf.name, "JPEG")
self.thumbnail.save(thumb_fn, File(open(tf.name)), save=False)
tf.close()
super(Image, self).save(*args, ** kwargs)
How do I fix this error?
We can solve this error by Providing the right permissions to the file using chown or chmod commands and also ensuring Python is running in the elevated mode permission .
Error 13 indicates a filesystem permissions problem. That is, Apache was denied access to a file or directory due to incorrect permissions. It does not, in general, imply a problem in the Apache configuration files.
The PermissionError: [errno 13] permission denied error occurs when you try to access a file from Python without having the necessary permissions. To fix this error, use the chmod or chown command to change the permissions of the file so that the right user and/or group can access the file.
Permission denied simply means the system is not having permission to write the file to that folder. Give permissions to the folder using "sudo chmod 777 " from terminal and try to run it.
It looks to me like django doesn't have the permissions it needs to access your MEDIA_ROOT
folder.
Have a look at your MEDIA_ROOT
settings in your settings.py file. Then check the permissions on the folder (something like ls -lsa /path/to/media_root
from a bash shell). Make sure the user running django as write permission to the folder.
Also, as asermax points out, make sure you have created an images directory within your MEDIA_ROOT.
Have a look at the documentation for serving static files particularly the section on serving other directories
UPDATE
Perhaps it's this issue. Try replacing im.save(tf2.name, "JPEG")
with im.save(tf2, "JPEG")
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