关于Django的parent_object的依赖内联外键

Question

朋友先谢谢您的帮助。我想让依赖于父对象的内联并在django admin中借助filter限制inline内的queryset，我试图确保在admin中内联被异步加载（即，无需重新加载页面或保存页面）面板的更改表格。

admin.py

class AttendanceRecordInline(admin.TabularInline):
    model = AttendanceRecord

@admin.register(Level)
    class LevelAdmin(admin.ModelAdmin):
         pass

@admin.register(Student)
    class StudentAdmin(admin.ModelAdmin):
         pass

@admin.register(Attendance)
class AttendanceAdmin(admin.ModelAdmin):
     inlines = [
        AttendanceRecordInline,
     ]

models.py

class Level(models.Model):
    name = models.CharField(max_length=255, null=True, blank=True)

    def __str__(self):
        return self.name


class Student(models.Model):
    name = models.CharField(max_length=255, null=True, blank=True)
    level = models.ForeignKey(Level, on_delete=models.CASCADE)

    def __str__(self):
        return self.name

class Attendance(models.Model):
    level = models.ForeignKey(Level, on_delete=models.CASCADE)
    date = models.DateTimeField(default=datetime.now)

    def __str__(self):
        return "Attendance of {}-{}".format(self.level, self.date.strftime('%B %d, %Y'))


class AttendanceRecord(models.Model):
    attendance = models.ForeignKey(Attendance, on_delete=models.CASCADE)
    student = models.ForeignKey(Student, on_delete=models.CASCADE)
    status = models.CharField(max_length=30, choices=ATTENDANCE_STATUS)

    def __str__(self):
        return "{}-{}-{}".format(self.attendance.date.strftime('%Y-%m-%d'), self.student, self.status)

一些发现：

1. Ajax加载值作为方面覆盖form, event listener and template
2. 尝试了def formfield_for_foreignkey(self, db_field, request, **kwargs):，它可以工作，但结果不同步

3. 覆盖其他功能，结果不同步

   • get_formset
   • get_formsets_with_inlines
   • get_inline_instances

问题：

结论： 该发现中的第一个似乎适用于我的情况。用ajax创建foreignkey字段是一种好习惯吗？