如何按工作顺序返回注释列表？

Question

我有这样一个案例：

我有一个训练课程：

class WorkOrder(models.Model):
    workorder_num = models.CharField(max_length=64, help_text="workorder number")
    name = models.CharField(max_length=32, help_text="name")
    content = models.TextField(help_text="content")

我还有一个WorkOrderComment课程：

class WorkOrderComment(models.Model):
    """
    comment 
    """
    workorder = models.ForeignKey(WorkOrder, help_text="belong to which order"  )  
    comment_user = models.OneToOneField(User, help_text="comment user")
    content = models.CharField(max_length=256, help_text="content")

因此，有一个要求，我想列出workorder注释，所以我编写了序列化程序和视图：

序列化程序：

class WorkOrderCommentSerializer(ModelSerializer):
    class Meta:
        model = WorkOrderComment
        fields = "__all__"

视图：

class WorkOrderCommentListAPIView(ListAPIView):
    serializer_class = WorkOrderCommentSerializer
    permission_classes = []
    queryset = WorkOrderComment.objects.filter()

但如果我列出workorder评论，你知道它会列出所有评论，没有组织

我想通过workorder得到它的评论，怎么办

Answer 1

您可以使用nested-relationships来实现这一点

您不需要WorkOrderCommentListAPIView

您可以在WorkOrderCommentSerializer中：

class WorkOrderCommentSerializer(ModelSerializer):

    comments = WorkOrderCommentSerializer(many=True, read_only=True)
    class Meta:
        model = WorkOrderComment
        fields = "__all__" 

然后使用access WorkOrderCommentSerializer，您可以获得所需的内容