How to hide some fields in django-admin?

Question

class Book(models.Model):
    title = models.CharField(..., null=True)
    type = models.CharField(...)
    author = models.CharField(...)

I have a sim

Answer 1

I tried to override get_form() function but some mix up errors occur when I switch in different records. I found there is a get_exclude() function we can override.

Use:

class BookAdmin(admin.ModelAdmin):
    def get_exclude(self, request, obj=None):
        if obj and obj.type == "1":
            # When you create new data the obj is None
            return ("title", )
        return super().get_exclude(request, obj)