ah, ok :)
just as another idea, you can handle the image uploads with Nginx, this
will free Python from dealing static files.
Le samedi 25 octobre 2014 20:31:35 UTC+1, John a écrit :
>
> That's a good idea, Aliane. In my case, the server was lightly loaded,
> the conversion time is very short and the admin was only used by a very
> small number of users who were sufficiently patient.
>
> John
>
> On 25/10/14 20:23, Aliane Abdelouahab wrote:
>
> You have to send the picture editing to another process, because you will
> block the operation untill the image will be converted!
>
> Le samedi 25 octobre 2014 19:23:33 UTC+1, John a écrit :
>>
>> On 25/10/14 15:26, Daniel Grace wrote:
>>
>> I need to include the following steps, but I don't know how:
>> 1. copy the 'picture' file
>> 2. resize it (the copy)
>> 3. save it to the upload directory
>> 4. store it in the 'thumb' field
>> ... continue as before and save the 'profile'.
>> --
>>
>>
>> Daniel,
>>
>> I've done something similar for a simple image manager. I have a WebImage
>> object that holds references to an image and its thumbnail. The thumbnail
>> is created using imagemagick's convert function when the image is updated.
>> Extracts from models.py and admin.py shown below should give you all the
>> clues you need.
>>
>> John
>>
>> #################
>> # models.py
>>
>> from django.conf import settings
>> from django.db import models
>> from django.db.models import F, Q
>> import os
>> import uuid
>> import subprocess
>>
>> _CONVERT_CMD = '/usr/bin/convert'
>> _CONVERT_THUMBNAIL_OPTS = ['-thumbnail','150x50']
>>
>> # ...
>>
>> class WebImage(models.Model):
>> "Images that are used on the web pages. Limited to certain sizes. Can
>> be produced by an ImageGenerator."
>> def get_image_file_path(inst, filename):
>> fn, ext = os.path.splitext(filename)
>> filename = "%s%s" % (uuid.uuid4(), ext)
>> return os.path.join(settings.MEDIA_ROOT+'wi/', filename)
>>
>> name = models.CharField(max_length=80,help_text="Full name of the web
>> image")
>> slug = models.SlugField(max_length=50,help_text="Slug for the web image
>> name")
>> description = models.TextField(help_text="Image description")
>> img =
>> models.ImageField(null=True,upload_to=get_image_file_path,height_field="height",width_field="width")
>> img_gen = models.ForeignKey('ImageGenerator', blank=True, null=True,
>> on_delete=models.SET_NULL)
>> img_size = models.ForeignKey('ImageSize', blank=True, null=True,
>> default=None, on_delete=models.SET_NULL)
>> width = models.IntegerField(editable=False,blank=True,help_text="Width
>> of the picture. Not editable")
>> height =
>> models.IntegerField(editable=False,blank=True,help_text="Height of the
>> picture. Not editable")
>> licensing = models.TextField(blank=True,help_text="Details of image
>> ownership, copyright and licensing. Blank for 'same as original image'")
>> created_by = models.CharField(editable=False,blank=True,max_length=80,
>> help_text="Uploader. Not editable")
>> creation_date =
>> models.DateTimeField(editable=False,blank=True,auto_now_add=True,
>> help_text="Date/time uploaded. Not editable")
>> uploaded_by = models.CharField(editable=False,blank=True,max_length=80,
>> help_text="Uploader. Not editable")
>> upload_date =
>> models.DateTimeField(editable=False,blank=True,auto_now_add=True,
>> help_text="Date/time uploaded. Not editable")
>> tags = TaggableManager()
>>
>> def thumb_path(self):
>> return os.path.join(settings.MEDIA_ROOT+'thumb/',os.path.basename(
>> self.img.name))
>>
>> def thumb_url(self):
>> return "%sthumb/%s" % (settings.MEDIA_URL,os.path.basename(
>> self.img.name))
>>
>> def create_thumb(self):
>> args = [_CONVERT_CMD, self.img.name] + _CONVERT_THUMBNAIL_OPTS +
>> [self.thumb_path()]
>> try:
>> output = subprocess.call(args)
>> except subprocess.CalledProcessError, e:
>> self.description = "%s\n%s\n%d" % (self.description, e.output,
>> e.returncode)
>> pass # This needs to be a logger.
>> self.save()
>>
>> def thumb_field(self):
>> return ('<img src="%s" />' % self.thumb_url())
>> thumb_field.short_description = "Thumbnail"
>> thumb_field.allow_tags = True
>>
>> def get_absolute_url(self):
>> return "%swi/%s" % (settings.MEDIA_URL,os.path.split(self.img.name
>> )[1])
>>
>> def __unicode__(self):
>> return "%s (%dx%d)" % (self.name,self.width,self.height)
>>
>> ########################
>> # admin.py
>>
>> class WebImageAdmin(ModelAdmin):
>> def save_model(self, req, obj, form, change):
>> # Add the uploader info to the object
>> if not change or obj.uploaded_by == '':
>> obj.uploaded_by = "%s (%s %s)" % (req.user.username,
>> req.user.first_name, req.user.last_name)
>> # And the creator info in the same manner
>> if not change or obj.created_by == '':
>> obj.created_by = "%s (%s %s)" % (req.user.username,
>> req.user.first_name, req.user.last_name)
>> # And save
>> obj.save()
>> # Create a thumbnail
>> obj.create_thumb()
>>
>> list_display = ("__unicode__","img_size","thumb_field",)
>> list_filter = ('img_size','width','height')
>> ordering = ('name','width','height')
>> prepopulated_fields = {"slug": ("name",)}
>> save_on_top = True
>>
>> form = WebImageForm
>>
>> --
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