Add SafeImageSpecField

[voronind]

Add SafeImageSpecField that will not raise exception if source file is absent.

[matthewwithanm]

Can you show me an example of code that's raising an exception?

[nex2hex]

Use objects inherit for that:

class SafeProcessedImageField(ProcessedImageField):
    def clean(self, data, initial=None):
        data = super(ProcessedImageField, self).clean(data, initial)

        if data and data != initial:
            spec = self.get_spec(source=data)
            try:
                data = generate(spec)
            except (IndexError, IOError, ValueError, OverflowError) as e:
                pass

        return data

And use it your forms:

class PhotoForm(forms.Form):
    photo = SafeProcessedImageField(spec_id='model:photo')