django 内联覆盖保存

Posted 2023-02-24

【中文标题】django 内联覆盖保存

【英文标题】：django inlines override save

【发布时间】：2015-08-01 23:54:26

【问题描述】：

所以我有一个包含许多问题的测试模型。我在 TestAdmin 中将它们显示为内联。

class QuestionInline(admin.TabularInline):
    model = Question


class TestAdmin(admin.ModelAdmin):
    inlines = [
        QuestionInline,
    ]

在保存时，我已经覆盖了我计算测试最大结果的保存方法：

def save(self, *args, **kwargs):
    super(Test, self).save(*args, **kwargs)
    max_result = 0

    for question in Question.objects.filter(test=self):
        if question.calculate_stress_level and question.type != "0" and question.type != "1" and question.type != "10" and question.type != "11":
            max_choice = 0

            for choice in AnsweredQuestion.ALL_CHOICES[question.type]:
                if max_choice < int(choice[0]):
                    max_choice = int(choice[0])

            max_result += max_choice

    self.max_result = max_result

    super(Test, self).save(*args, **kwargs)

但是，当调用 save 方法时，问题值没有被更新，因此我必须保存模型两次。为什么会这样，我该如何解决？

【参考方案1】：

必须先保存父对象才能写入其 m2m 字段。请查看How to create an object for a Django model with a many to many field? 了解类似主题的讨论。