Image field admin deletion

[JKotras]

When you save translated model with ImageFiled without an image, the Parler saves the value "False" into a database.

Translated model with image field:

class Banner(BaseModel, TranslatableModel):
    name = models.CharField(max_length=50, null=False, blank=False, help_text='General banner administration name')
    active = models.BooleanField(default=False)
    title = TranslatedField()
    image = TranslatedField()

    def __unicode__(self):
        return self.title


class BannerTranslation(TranslatedFieldsModel):
    master = models.ForeignKey(Banner, related_name='translations', on_delete=models.CASCADE, null=True)
    title = models.CharField(max_length=200, null=True, blank=True)
    image = ImageField(null=True, blank=True, default=None)

Administration:

@admin.register(Banner)
class BannerAdmin(TranslatableAdmin):
    list_display = ('id', 'name', 'active')
    list_filter = ('active',)
    list_display_links = ('id', 'name',)
    search_fields = ('id', 'name',)

    fieldsets = (
        (None, {
            'fields': ('name', 'active'),
        }),
        ('Banner Content', {
            'fields': ('title', 'image'),
        }),
    )

When you save the administration form without an image (or you check "remove") the value "False" is saved into a database. Finally the Django is looking for "False" file.

[JKotras]

My temporal solution is:

class BannerTranslatableModelForm(TranslatableModelForm):

    def clean_image(self):
        data = self.cleaned_data['image']
        if not data:
            return ''
        return data

@admin.register(Banner)
class BannerAdmin(TranslatableAdmin):
    list_display = ('id', 'name', 'active')
    list_filter = ('active', )
    list_display_links = ('id', 'name',)
    search_fields = ('id', 'name',)
    form = BannerTranslatableModelForm