Question

如果有情况，我需要一个带有动态选择选项的表单集。假设我有3个模型Book-> Chapter-> Comment

# ============ models.py =============

class Book(models.Model):

    name = models.CharField(_("Book name"), max_length=50)

    class Meta:
        verbose_name = _("book")
        verbose_name_plural = _("books")

    def __str__(self):
        return self.name


class Chapter(models.Model):

    name = models.CharField(_("Chapter name"), max_length=50)
    book = models.ForeignKey(Book, verbose_name=_(""), on_delete=models.CASCADE)

    class Meta:
        verbose_name = _("chapter")
        verbose_name_plural = _("chapters")

    def __str__(self):
        return self.name


class Comment(models.Model):

    comment = models.TextField(_("Chapter comment"))
    chapter = models.ForeignKey(Chapter, verbose_name=_("Chapter"), on_delete=models.CASCADE)


    class Meta:
        verbose_name = _("Comment")
        verbose_name_plural = _("Comments")

    def __str__(self):
        return self.name


 # ============ Forms.py =============

class CommentForm(forms.Form):
    chapter = forms.ModelChoiceField(Chapter.objects.all()) # <~~~~ Here is the problem
    comment = forms.CharField(max_length=50, required=True)

。我有一个页面网址'/ book / {id} / comment' ，在此URL中，用户将使用表单集+ jQuery处理addrow按钮对一个或多个章节进行评论。

如何过滤（章节的）查询集以匹配我在ID中选择的书中的章节？

如何基于动态查询集过滤选择选项

0 个答案: