I'm using django-stdimage for creating variations of the image.
class Photo(models.Model):
photo = StdImageField(upload_to='photos', verbose_name=_("photo"),
variations={'large': (600, 600), 'thumbnail': (100, 100)}
StdImageField does it's own operations on the image, subclassing ImageField and
having attr_class = StdImageFieldFile
StdImageFieldFile does the actual save operation
class StdImageFieldFile(ImageFieldFile):
"""
Like ImageFieldFile but handles variations.
"""
def save(self, name, content, save=True):
super(StdImageFieldFile, self).save(name, content, save)
render_variations = self.field.render_variations
if callable(render_variations):
render_variations = render_variations(
file_name=self.name,
variations=self.field.variations,
storage=self.storage,
)
if not isinstance(render_variations, bool):
msg = (
'"render_variations" callable expects a boolean return value,'
' but got %s'
) % type(render_variations)
raise TypeError(msg)
if render_variations:
self.render_variations()
However, I want to do some manipulation of the image before
StdImageFieldFile does it (rotating).
So I created my custom field, to catch the image before it's passed to
stdimage
class Rotate(ImageFieldFile):
def save(self, name, content, save=True):
save = False
return super(Rotate, self).save(name, content, save)
class StdImageFieldFileRotateMixin(Rotate, StdImageFieldFile):
pass
class StdImageFieldRotate(StdImageField):
attr_class = StdImageFieldFileRotateMixin
I have the image in the content property of the Rotate class and I can
manipulate the image using PIL, but after it's done, I don't know how to
assign this image back to the content property. It seems that it's
generated on the lower level. Is there a method to generate this content
property
and then MRO will handle the rest (i.e. pass it to StdImageFieldFile and it
will do the rest)?
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