Django-Admin TabularInline 保存前修改内联项属性

Question

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

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,)

我也试图重写 save_related 函数，但似乎它包含的 CommentFormSet 对象是所有对象，而不是仅修改或保存的对象：

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

有关此主题的一些 SO 帖子已经过时，并且没有足够的信息来推断有效的 save_related 实现。

Answer 1

我认为您要覆盖的方法是 save_formset。此方法在 AdminModel 中的每个内联调用一次，并保存内联对象。

你可以这样使用它：

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中。

Answer 2

注意，这个解决方案也适用于我：

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)

Django-Admin TabularInline 保存前修改内联项属性

Django-Admin TabularInline modify inline item attribute before save

django

django-admin

django-admin-tools

django-admin-actions