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Tag "imagefield"

30 snippets

Snippet List

Dynamic thumbnail generator

This snippet creates thumbnails on-demand from a ImageField with any size using dynamics methods, like ``get_photo_80x80_url`` or ``get_photo_640x480_filename``, etc. It assumes you have an `ImageField` in your Model called `photo` and have this in your models.py: import re from os import path from PIL import Image GET_THUMB_PATTERN = re.compile(r'^get_photo_(\d+)x(\d+)_(url|filename)$') `models.py` example: import re from os import path from PIL import Image from django.db import models GET_THUMB_PATTERN = re.compile(r'^get_photo_(\d+)x(\d+)_(url|filename)$') class Photo(models.Model): photo = models.ImageField(upload_to='photos/%Y/%m/%d') <snippet here> Example usage: >>> photo = Photo(photo="/tmp/test.jpg") >>> photo.save() >>> photo.get_photo_80x80_url() u"http://media.example.net/photos/2008/02/26/test_80x80.jpg" >>> photo.get_photo_80x80_filename() u"/srv/media/photos/2008/02/26/test_80x80.jpg" >>> photo.get_photo_64x64_url() u"http://media.example.net/photos/2008/02/26/test_64x64.jpg" >>> photo.get_photo_64x64_filename() u"/srv/media/photos/2008/02/26/test_64x64.jpg"

  • image
  • thumbnail
  • model
  • imagefield
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Filter to resize a ImageField on demand

A filter to resize a ImageField on demand, a use case could be: ` <img src="object.get_image_url" alt="original image"> <img src="object.image|thumbnail" alt="image resized to default 200x200 format"> <img src="object.image|thumbnail:"200x300" alt="image resized to 200x300"> ` The filter is applied to a image field (not the image url get from *get_image_url* method of the model), supposing the image filename is "image.jpg", it checks if there is a file called "image_200x200.jpg" or "image_200x300.jpg" on the second case, if the file isn't there, it resizes the original image, finally it returns the proper url to the resized image. There is a **TODO**: the filter isn't checking if the original filename is newer than the cached resized image, it should check it and resize the image again in this case.

  • filter
  • models
  • thumbnail
  • resize
  • imagefield
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Easy file upload handler

This function emulates the file upload behaviour of django's admin, but can be used in any view. It takes a list of POST keys that represent uploaded files, and saves the files into a date-formatted directory in the same manner as a `FileField`'s `upload_to` argument.

  • image
  • forms
  • view
  • upload
  • imagefield
  • filefield
  • file
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Admin list thumbnail

This code will add a thumbnail image to your Model's Admin list view. The code will also generate the thumb images, so the first view may be a little slow loading. This assumes you have an **ImageField** in your Model called **image**, and the field's **upload_to** directory has a subdirectory called **tiny**. You then must add **"thumb"** to your Model's Admin **list_display**. The thumbnail images are also linked to the full size view of the image. I found this **VERY** useful... hope someone else does as well.

  • admin
  • imagefield
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ImageField for admin with thumbnail

AdminImageWidget is a ImageField Widget for admin that shows a thumbnail. Usage example on a form: class IconForm(forms.ModelForm): icon = forms.ImageField(label='icon', widget=AdminImageWidget)

  • image
  • admin
  • thumbnail
  • imagefield
  • widget
  • imagewidget
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ImageField for Google App Engine

This is a replacement for Django's built-in ImageField. It uses the Google AppEngine image APIs in order to validate. Notes: 1. Validation of the field counts against your App Engine transformations quota. 2. This code assumes you're only using the in-memory file upload handler. None of the other stock handlers work well on App Engine; you should probably disable them.

  • fields
  • imagefield
  • google
  • appengine
  • gae
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Use the primary key in FileField and ImageField filenames

Sometimes it is desirable to use values like the primary key when naming `FileField` and `ImageField` files, but such values are only available after saving the model instance. This abstract class implements a two-phase save in order to make this case easy. See the example in the docstring. Another solution would be to write a `save()` that requires `upload_to` to be a callable that checks for `instance.pk`, then calls it again after saving. However, this would require more work from the developer for simple cases.

  • imagefield
  • filefield
  • rename
  • upload_to
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ImageField with per user folder

If you need to upload Image files into folders qualified with user name eg.: 'images/user1/2008/01/01' then you may use this snippet. In order to use it you have to install ThreadLocals middleware as described here: http://code.djangoproject.com/wiki/CookBookThreadlocalsAndUser Then just import UserImageField class at your models.py and specify 'upload_to' parameter with '%(user)s' in the path eg.: ` image3 = UserImageField(_('Image 3'), upload_to='flower_images/%(user)s/%Y/%m/%d', null=True, blank=True) `

  • imagefield
  • path
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Load File From URL Widget

Rather simple usage, modelforms/in the admin: class CustomAdminForm(forms.ModelForm): class Meta: model = Something widgets = { 'image': URLFileInput(default_exts=[".png", ".gif", ".jpg"]), } class SomethingAdmin(admin.ModelAdmin): form = CustomAdminForm admin.site.register(Something, SomethingAdmin) Basically, this will pull the image from the URL instead of only pulling it from your harddrive for upload. Also accepts optional default_exts argument which limits the file types. Defaults to images.

  • imagefield
  • filefield
  • urlfield
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Updated Filter to resize a ImageField on demand (ver.2)

An update to snippet 1718 (http://www.djangosnippets.org/snippets/1718/). This update lets you pass an image URL string as well as a model ImageField instance. This means that you can then create thumbnails on demand for images outside of model

  • image
  • templatetag
  • thumbnail
  • resize
  • imagefield
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