Hello,
I'm trying to change the upload_to attribute of an ImageField so that
it is in the format "web_projects/year/slug/". The problem I am having
is that the ForeignKey model is getting saved before the related
ScreenShot model is able to call it's save method to change upload_to.
I'm trying to use a pre_save signal to reverse the order of saving but
I'm not sure how to access the current instance of the ScreenShot
model to call it's save method. Thanks for any suggestions.
class ScreenShot(models.Model):
project = models.ForeignKey(WebProject)
image = models.ImageField(upload_to="web_projects/%Y/")
page_title = models.CharField(max_length=250, help_text="Maximum 250
characters.")
def __unicode__(self):
return self.page_title
def save(self):
self.image.upload_to="web_projects/%Y/"+self.project.slug
super(ScreenShot, self).save()
def change_upload_to(sender, **kwargs):
s = ScreenShot() # not sure how to access current instance
s.save()
pre_save.connect(change_upload_to, sender=WebProject)
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