Replacing a Django image doesn't delete original

Question

In Django, if you have a ImageFile in a model, deleting will remove the associated file from disk as well as removing the record from the database.

Shouldn\'t replac

Answer 1

The code in the following working example will, upon uploading an image in an ImageField, detect if a file with the same name exists, and in that case, delete that file before storing the new one.

It could easily be modified so that it deletes the old file regardless of the filename. But that's not what I wanted in my project.

Add the following class:

from django.core.files.storage import FileSystemStorage
class OverwriteStorage(FileSystemStorage):
    def _save(self, name, content):
        if self.exists(name):
            self.delete(name)
        return super(OverwriteStorage, self)._save(name, content)

    def get_available_name(self, name):
        return name

And use it with ImageField like so:

class MyModel(models.Model):
    myfield = models.ImageField(
        'description of purpose',
        upload_to='folder_name',
        storage=OverwriteStorage(),  ### using OverwriteStorage here
        max_length=500,
        null=True,
        blank=True,
        height_field='height',
        width_field='width'
    )
    height = models.IntegerField(blank=True, null=True)
    width = models.IntegerField(blank=True, null=True)