Django-Admin TabularInline在保存之前修改内联项属性

Question

嗨我需要能够在保存或修改内联对象时将当前用户添加到内联对象中。我正在使用django-admin仪表板，因为此应用程序不面向公众。

class Med(models.Model):
    generic_name = models.CharField(max_length=33)
    last_updated_by = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True, on_delete=models.SET_NULL)

    def save_model(self, request, obj, form, change):
            try:
                obj.last_updated_by = request.user
            except AttributeError:
                obj.last_updated_by = None
            super().save_model(request, obj, form, change)

class Comment(models.Model):
    text = models.TextField(("Comment"), max_length = 1000, null=False)
    med = models.ForeignKey(Med, related_name="comments", on_delete=models.CASCADE)
    user = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True, on_delete=models.SET_NULL)

    def save_model(self, request, obj, form, change):
        obj.user = request.user
        super().save_model(request, obj, form, change)

class CommentInline(admin.TabularInline):
    model = Comment
    extra = 0

class Med(admin.ModelAdmin):
    inlines = (CommentInline,)

我也试图覆盖save_related函数，但似乎它包含的CommentFormSet对象是所有它们与仅被修改或保存的对象：

'_queryset': <QuerySet [<Comment: test>, <Comment: another test>]>,

关于这个主题的一些SO帖子陈旧，并且没有足够的信息来推断一个正在运行的save_related实现。

Answer 1

我认为你正在寻找覆盖的方法是save_formset。在AdminModel中，每个内联调用此方法一次，并保存内联对象。

你可以像这样使用它：

class Med(admin.ModelAdmin):
    inlines = (CommentInline,)

    def save_formset(self, request, form, formset, change):
        for inline_form in formset.forms:
            if inline_form.has_changed():
                inline_form.instance.user = request.user
        super().save_formset(request, form, formset, change)

这会将当前用户添加到正在修改的对象。

Answer 2

抬头，这个解决方案对我也有用：

class MedAdmin(admin.ModelAdmin):
    inlines = (CommentInline,)

    def save_related(self, request, form, formsets, change):
        for formset in formsets:
            list_comment = formset.save(commit=False)
            for comment in list_comment:
                comment.user = request.user
        return super().save_related(request, form, formsets, change)