如何在 django 中按文件名过滤图像字段

Question

I add a ImageField in my model like

class UserImage(models.Model):
    photo = models.ImageField(upload_to='target_path')
    ....

after I save an image, let's say 'a.jpg', then I want user the filename 'a.jpg' to filter the model, what should I write like:

UserImage.objects.filter(photo.filename='a.jpg')
....

Answer 1

Your suggestion would give you an error. Try this instead:

UserImage.objects.filter(photo='a.jpg')

Edit: Django prepends the upload_path to the file name. The query should then do something similar, for example:

UserImage.objects.filter(photo='images/users/photos/a.jpg')

Answer 2

The above answer will correctly work moreover you can use icontains too as i am using

comment_qs = Upload.objects.filter(title__icontains=str(file_name)).filter(content_type__model='Task')

Answer 3

You need to query with the name of the photo in the UserImage model.

name = UserImage.objects.all()[0].photo.name
print(name)

media/a.jpg

UserImage.objects.filter(photo=name).all()

OR

UserImage.objects.filter(photo="media/a.jpg").all()

<QuerySet [<UserImage: UserImage object (1)>]>