https is not served when using drf.

[SeokEunJu]

In the case of a general file field, the url starts with http:// in local and https:// in dev and prod. But for privateFileField it starts with http:// everywhere.

Model Code

class ProjectImage(models.Model):
    project = models.ForeignKey(Project, on_delete=models.CASCADE, related_name="project_image")
    image = PrivateFileField(
        _("Project Image"),
        upload_to=investment_project_image_path,
    )

Serializer Code

class ProjectImageSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.ProjectImage
        fields = ['image']

Result

For General File field

Why is this happening?