I have a Django model for articles with an array field that sometimes has ids.

id_list = ArrayField(models.CharField(max_length=10000), blank=True, null=True)

I want to write a query that finds all the article objects that have data in the id_list. I tried the following, but it did not work.

Article.objects.filter(id_list__isnull=False)

What is the correct way to write this? Thank you.