在 django admin 上编辑实际对象之前保存相关对象 [英] Save the related objects before the actual object being edited on django admin

问题描述

是否可以在 django 管理表单上编辑实际对象之前保存相关对象?

Is it possible to save the related objects before the actual object being edited on a django admin form?

例如:

在models.py

class Parent(model.Model):
    pass

class Child(model.Model):
    parent = models.ForeignKey(Parent)

@receiver(post_save,sender = Parent)
def notify_parent_save(sender, instance=None, **kwargs):
    print "Parent save"

@receiver(post_save,sender = Child)
def notify_child_save(sender, instance=None, **kwargs):
    print "Child saved"

在admin.py

class ChildInline(admin.TabularInline):
    model = Child
    extra = 1

class ParentsAdmin(admin.ModelAdmin):
    inlines = [ChildInline]

admin.site.register(Parent,ParentsAdmin)

现在，在 django admin 中，如果我保存父对象，它将在控制台上输出.

Now, in django admin if I save a parent object, it will output on the console.

Parent save
Child save

我需要按照相反的顺序进行:

I need this to happen in revese order:

Child save
Parent save

推荐答案

以下先救孩子:

class ParentAdmin(admin.ModelAdmin):
    inlines = [ChildInline]

    def save_model(self, request, obj, form, change):
        pass # don't actually save the parent instance

    def save_formset(self, request, form, formset, change):
        formset.save() # this will save the children
        form.instance.save() # form.instance is the parent

这篇关于在 django admin 上编辑实际对象之前保存相关对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！