Django talk: Re: Image resizing

Hi,

Resizing is now working properly but the issue is that it is giving key error.

it is taking all files for eg(images.bmp,xx.jpeg) but is giving error when i am tryint to upload the file (luzern-bridge-8q4_small.jpg) In short it is giving error for jpg format. Please suggest

def edit_profile(request):

# data = Thumbnail.objects.get(pk=id)

if 'username' in request.session:

#user_id=request.POST.get('id')

user_id=request.GET.get('id')

usr_obj=User.objects.get(id=int(user_id))

if request.method=="POST":

regform=Edit_Registration(instance=usr_obj,data=request.POST)

if regform.is_valid():

image_file = StringIO.StringIO(request.FILES['image'].read())

imagename=request.FILES['image'].name

ext = imagename.split('.')[-1]

image = Image.open(image_file)

imageresize = image.resize((100,100), Image.ANTIALIAS)

filename = hashlib.md5(image_file.getvalue()).hexdigest()+'.'+ext

imageresize.save("/home/ranosys-akash/workspace/mysite/src/media/"+filename, ext, quality=75)

error at above line(key error...u'JPG')

usr_obj.image=filename

regform.save();

return HttpResponseRedirect('/index/')

else:

regform=Edit_Registration(instance=usr_obj)

return render_to_response("edit_profile.html",{"form":regform,})

else:

#user_id=request.GET.get('id')

#usr_obj=User.objects.get(id=int(user_id))

#temp_data={'first_name':user_id.first_name,'last_name':user_id.last_name,'email':user_id.email,'password':user_id.password,'dob':user_id.dob,'mobileno':user_id.mobileno,'houseno':user_id.houseno,'address1':user_id.address1,'city':user_id.city,'state':user_id.state,'pincode':user_id.pincode,'country':user_id.country,'comment':user_id.comment,'sex':user_id.sex}

regform=Edit_Registration(instance=usr_obj)

return render_to_response("edit_profile.html",{"form":regform,"user_id":user_id})

else:

return HttpResponseRedirect('/login/')

On Thu, Mar 26, 2015 at 9:37 AM, Akash Patni <akash.patni@ranosys.com> wrote:

if regform.is_valid():

image_file = StringIO.StringIO(request.FILES['image'].read())
image = Image.open(image_file)

imageresize = image.resize((100,100), Image.ANTIALIAS)
imageresize.save( 'abc.JPEG', quality=75)
regform.save();
return HttpResponseRedirect('/index/')
else:
regform=Edit_Registration(instance=usr_obj)
return render_to_response("edit_profile.html",{"form":regform,})
else:
#user_id=request.GET.get('id')
#usr_obj=User.objects.get(id=int(user_id))
#temp_data={'first_name':user_id.first_name,'last_name':user_id.last_name,'email':user_id.email,'password':user_id.password,'dob':user_id.dob,'mobileno':user_id.mobileno,'houseno':user_id.houseno,'address1':user_id.address1,'city':user_id.city,'state':user_id.state,'pincode':user_id.pincode,'country':user_id.country,'comment':user_id.comment,'sex':user_id.sex}
regform=Edit_Registration(instance=usr_obj)
return render_to_response("edit_profile.html",{"form":regform,"user_id":user_id})
else:
return HttpResponseRedirect('/login/')

Hey ,
I am using the above method and able to resize the image but it is only taking JPEG format and i want other format also. Can u please suggest
imageresize.save( 'abc.JPEG', quality=75) it can take three parameters..name, format and quality

On Wed, Mar 25, 2015 at 1:29 PM, Andreas Kuhne <andreas.kuhne@suitopia.com> wrote:
Hi,

Again, you should really put this in your database model instead of in the view. If you use your overriden save function, you would be able to add this there. Also, you check if the image is not an L or RGB image (don't know what L is) and resize it ONLY if it is on of them.

Regards,

Andréas

2015-03-25 8:26 GMT+01:00 Akash Patni <akash.patni@ranosys.com>:
For image resizing i have used the following function(in bold).Is it right??

def edit_profile(request):

if 'username' in request.session:
#user_id=request.POST.get('id')
user_id=request.GET.get('id')
usr_obj=User.objects.get(id=int(user_id))
if request.method=="POST":
if(request.POST['houseno']!=''):
houseno=request.POST['houseno']
else:
houseno=None
if(request.POST['address1']!=''):
address1=request.POST['address1']
else:
address1=None
if(request.POST['city']!=''):
city=request.POST['city']
else:
city=None
if(request.POST['state']!=''):
state=request.POST['state']
else:
state=None
if(request.POST['pincode']!=''):
pincode=request.POST['pincode']
else:
pincode=None
if(request.POST['country']!=''):
country=request.POST['country']
else:
country=None
if(request.POST['comment']!=''):
comment=request.POST['comment']
else:
comment=None
regform=Edit_Registration(instance=usr_obj,data=request.POST)

if regform.is_valid():
try:
from PIL import Image, ImageOps
except ImportError:
import Image
import ImageOps
imagecontent=request.FILES['image']---At this point it is giving MultiValueDicitionayKeyError(though the field name is same that is image)
if imagecontent.mode not in ("L", "RGB"):
image = imagecontent.convert("RGB")
imageresize = image.resize((100,100), Image.ANTIALIAS)
imageresize.save( 'JPEG', quality=75)
regform.save();
return HttpResponseRedirect('/index/')
else:
return render_to_response("edit_profile.html",{"form":regform,})
else:


regform=Edit_Registration(instance=usr_obj)
return render_to_response("edit_profile.html",{"form":regform,"user_id":user_id})
else:
return HttpResponseRedirect('/login/')

Please Suggest..........

On Tue, Mar 24, 2015 at 6:41 PM, Andreas Kuhne <andreas.kuhne@suitopia.com> wrote:
You can use Pillow to change the size of the images yourself. That is however pretty complicated and IMO not really worth the effort. I would go with easy_thumbnails.

Regards,

Andréas

2015-03-24 14:04 GMT+01:00 Akash Patni <akash.patni@ranosys.com>:
can you please suggest me another answer...

On Tue, Mar 24, 2015 at 6:13 PM, Andreas Kuhne <andreas.kuhne@suitopia.com> wrote:
Hi,

Check out the easy_thumbnails plugin. http://easy-thumbnails.readthedocs.org/en/2.1/

It automatically resizes all images to the size you want if you use it correctly.

Regards,

Andréas

2015-03-24 11:07 GMT+01:00 <akash.patni@ranosys.com>:
Hi..
can anyone please tell me how to resize the uploaded image....
This is my model
class User(models.Model):
    first_name=models.CharField(
verbose_name = "First Name *",max_length=20,blank=False)
    last_name=models.CharField(verbose_name = "Last Name *",max_length=20,blank=False)
    username=models.EmailField(verbose_name = "Email *",max_length=30,blank=False)
    password=models.CharField(verbose_name = "Password *",max_length=15,blank=False)
    dob=models.DateField(verbose_name = "DOB *" ,blank=True,null=True)
    mobileno=models.CharField(verbose_name = "Mobile No *",max_length=20,blank=False)
    houseno=models.CharField(verbose_name = "House No",max_length=10,blank=True)
    address1=models.CharField(verbose_name = "Adress1",max_length=30,blank=True)
    city=models.CharField(verbose_name = "City",max_length=20,blank=True)
    state=models.CharField(verbose_name = "State",max_length=30,blank=True)
    pincode=models.CharField(verbose_name = "Pincode",max_length=20,blank=True)
    country=models.CharField(verbose_name = "Country",max_length=30,blank=True)
    comment=models.CharField(verbose_name = "Comment",max_length=200,blank=True)
    sex=models.CharField(verbose_name = "Sex *",max_length=5,blank=False)
    image=models.FileField(verbose_name = "Image(limit 1Mb) *",blank=True,upload_to='media/')

    def __unicode__(self):
        return self.first_name

this is my form
class Registration(forms.ModelForm):
      password = forms.CharField(label='Password *',widget=forms.PasswordInput())
      image = forms.ImageField(label='Select a file *',help_text='max. 1 megabytes')
      class Meta:

view.py
def registration(request):
    #request.session.set_test_cookie()
    if request.method == "POST":
            regform=Registration(request.POST,request.FILES)
            if regform.is_valid():
               #item=resize_and_crop(img_path, modified_path, size, crop_type='top')
               regform.save();
               return HttpResponseRedirect('/login/')

            else:
                return render_to_response('registration.html',{"form":regform})
    else:
        regform=Registration()
    return render_to_response('registration.html',{"form":regform})

def show_profile(request):
    if 'username' in request.session:
         obj_user=User.objects.all().order_by('-id')
         return render_to_response("index.html",{"obj_user":obj_user,"message":"Hello World"})
    else:
        return HttpResponseRedirect('/login/')

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Best Regards,
Akash Patni
Software Engineer


Head Office:
Oxley Bizhub, #06-48 | 73 Ubi Road 1 | Singapore - 408733
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Best Regards,
Akash Patni
Software Engineer


Head Office:
Oxley Bizhub, #06-48 | 73 Ubi Road 1 | Singapore - 408733
Tel: +65 66331556 | HP: +65 98573420
Global Offices:
San Francisco, USA | Jaipur, India | Bikaner, India

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Best Regards,
Akash Patni
Software Engineer


Head Office:
Oxley Bizhub, #06-48 | 73 Ubi Road 1 | Singapore - 408733
Tel: +65 66331556 | HP: +65 98573420
Global Offices:
San Francisco, USA | Jaipur, India | Bikaner, India