AttributeError: 'tuple' object has no attribute '_committed'

Question

models.py

class Image(models.Model):
    title = models.CharField(max_length=255)
    image = models.ImageField(upload_to=\'attack_images\', blank=True, null=         


        

Answer 1

When working with ImageField or FileField you actually operate on instance of FieldFile

And error in this case is assigning wrong type to ImageField - it expects FieldFile or at least File type.

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Brief answer what can be used instead of self.image = .... in your code:

from django.core.files import File

...

with open(result[0], "rb") as downloaded_file:
    self.image.save(os.path.basename(self.source_url), File(downloaded_file), save=False)
...

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Check this StackOverflow answer on saving files. I added a small change - save=False - while saving image - at this step we only save downloaded file = copying it from temporary path, where it was downloaded by urllib to desired target path in MEDIA, but not saving model instance.

self.image.save(name, file) - file is read and saved in MEDIA at upload_to path with name name and model instance is saved aftewards (default save=True).

self.image.save(name, file, save=False) - the same, but model instance is not saved after the file has been altered, which is probably desired as you save model instance super().save() later.

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What steps are happening in your code:

• downloading file with urllib (to temp path)
• saving it / copying to correct media / upload_to path and setting ImageField to its value
• setting other model instance fields
• saving model