Django RF update_or_create [英] Django RF update_or_create

问题描述

我正在尝试更新或创建以下模型：

I am trying to update or create the following model:

class Profile(models.Model):
    user = models.OneToOneField(AUTH_USER_MODEL, on_delete=models.CASCADE)
    canMakeEvent = models.BooleanField(default=False)

与序列化程序：

class ProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = Profile
        fields = '__all__'

并查看：

def post(self, request):
    answer, created = Profile.objects.update_or_create(
    user=request.user, canMakeEvent = request.data['canMakeEvent'])
    return Response()

<我理解响应不正确，但是update_or_create的代码是我主要担心的问题。控制台输出以下内容：

I understand the response isn't correct but the code to update_or_create is what I'm worried about primarily. The console outputs the following:

唯一约束失败：event_profile.user_id

推荐答案

您需要添加 默认值 参数仅按user_id执行搜索，而不按（user_id，canMakeEdit）组合进行搜索：

You need to add defaults argument to perform search only by user_id not by combination of (user_id, canMakeEdit):

answer, created = Profile.objects.update_or_create(
user=request.user, defaults={'canMakeEvent': request.data['canMakeEvent']})

这将允许更新所选用户的现有个人资料（如果存在）或创建新的个人资料否则。

This will allow to update existing profile of selected user if it exists or create new otherwise.

这篇关于Django RF update_or_create的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！