ResizeImageField

(extension of RemovableImageField)

by Wim Feijen, Go2People.

What does it do?

ResizeImageField is a replacement for django's ImageField. It has two major benefits:

1. Creation of thumbnails and scaled images.
2. Extends the image upload form and adds a preview and a checkbox to remove the existing image.

It's easy to use:

• Replace ImageField by ResizeImageField
• No further changes are necessary

Requirements:

Working installation of PIL, the Python Imaging Library

Usage

• add resize_image to your app
• add resize_filters.py to your templatetags
• in settings.py, set a PHOTO_DIR, f.e. photos/original
• in models.py, add:
  • from settings import PHOTO_DIR
  • from resize_image import ResizeImageField
  • photo = ResizeImageField(upload_to=PHOTO_DIR, blank=True)

Scaled images will be stored in 'photos/scaled', thumbnails will be stored in 'photos/thumb'.

Access your images from your template. Add::

{% load resize_filters %} {{ address.photo.url|thumb }}

or::

{{ address.photo.url|scaled }}

Defaults

• Scaled images are max. 200x200 pixels by default
• Thumbnails are 50x50 pixels.

Override the default behaviour in settings.py

Scaling is done by PIL's thumbnail function, transparency is conserved.

Credits

This code is an adaptation from python snippet 636 by tomZ: "Updated Filefield / ImageField with a delete checkbox"