Django Model 管理员：如何使用当前用户自动分配和隐藏 created_by 字段并在保存后显示？

Question

I am working certain model Accounting which consists of following model attributes.

class Accounting(model.Model):
    booking = models.OneToOneField(Booking, on_delete=models.PROTECT, null=True)
    description = models.CharField(max_length=100, validators=[])
    created_by = models.ForeignKey(User, on_delete=models.PROTECT)
    bus_company = models.ForeignKey(BusCompany, models.PROTECT)

in admin.py I have done so far

@admin.register(Accounting)
class AccountingAdmin(ModelAdmin):
      list_display =(
        'bus_company',
        'description ',
        'bus_company ',
    )
   

Now when I use Django admin for adding Accounting . I want to hide created_by and want to set the current logged in user as the created_by . Currently it is superuser so after adding of data The created_by fields also gets update and displayed how can I do this?

Answer 1

To hide the filed, set editable to False

created_by = models.Model(editable=False)

Now, also add blank=True to created_by and overwrite the save method:

created_by = models.Model(blank=True,null=True,editable=False)
def save(self,user,*args,**kwargs):
    user = user
    super().save(*args,**kwargs)

Now at the time of saving this object:

def view_name(request):
    user = request.user
    atributes = {'booking':'blabl','description':'blablablab'
    ,'bus_company':'blab blab'}
    account = Account(**atributes)
    account.save(user=user)
    

Answer 2

I added read_only fields in admin

@admin.register(Accounting)
class AccountingAdmin(ModelAdmin):
      list_display =(
        'bus_company',
        'description ',
        'bus_company ',
    )
    readonly_fields = (
        'created_by',

    )

    def save_model(self, request, obj, form, change):
        if not change:
            obj.created_by = request.user
        obj.save()