如何在django ModelAdmin中访问内联数据

Question

我需要处理以django管理员表单上传的文件.我在表单中添加了一个文件上传字段:

class ExampleInline(admin.TabularInline):
    model = OtherExample
    extra = 1
class ExampleForm(forms.ModelForm):
    filedata = forms.FileField()
    class Meta:
        model = ExampleModel
class ExampleModelAdmin(admin.ModelAdmin):
    form = ExampleForm
    inlines = [ExampleInline,]

这使表单呈现与我想要呈现的完全相同.Request中返回的数据正是我所期望的.

问题是我想访问内联的内容.

class ExampleAdmin(admin.ModelAdmin):
...
def save_model(self, Request, obj, form, change):
   the_file = form.cleaned_data['filedata']
   # do amazing things to contents of file

此时我想引用用户在内联中选择的结果.无论他们为OtherExample挑选什么.

如何通过表单访问？我不想通过请求,但我愿意这样做.我也愿意考察save_related(self,request, form, formset, change)

Answer 1

save_related可以这样做,虽然在保存表单后调用它,所以你最终会保存对象两次.您可以作为form.instance或访问该对象formset.instance.

def save_related(self, request, form, formsets, change):
    obj = form.instance
    # whatever your formset dependent logic is to change obj.filedata
    obj.save()
    super(ExampleAdmin, self).save_related(request, form, formsets, change)