“update_grid”对象没有属性“title”
提问于 2018-03-05 20:35:40
我已经编写了model.py和views.py.When，我添加了来自Admin的json变量，它给出了以下错误
'update_grid' object has no attribute 'title'
我的views.py
def save_grid(request):
if request.method == 'POST':
data = json.loads(request.body)
grid = update_grid(data=data)
grid.save()
return HttpResponse('success') # if everything is OK我的models.py
from django.db import models
from django.utils import timezone
from jsonfield import JSONField
class update_grid(models.Model):
data = JSONField()
def __str__(self):
return self.title我的JSON变量的形式为
[{"col":1,"row":1,"size_x":1,"size_y":1},{"col":2,"row":1,"size_x":1,"size_y":1},{"col":3,"row":1,"size_x":1,"size_y":1},{"col":4,"row":1,"size_x":1,"size_y":1},{"col":1,"row":2,"size_x":1,"size_y":1},{"col":2,"row":2,"size_x":1,"size_y":1},{"col":3,"row":2,"size_x":1,"size_y":1},{"col":4,"row":2,"size_x":1,"size_y":1},{"col":1,"row":3,"size_x":1,"size_y":1},{"col":2,"row":3,"size_x":1,"size_y":1},{"col":3,"row":3,"size_x":1,"size_y":1},{"col":4,"row":3,"size_x":1,"size_y":1},{"col":5,"row":1,"size_x":1,"size_y":1},{"col":6,"row":1,"size_x":1,"size_y":1}] 
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-03-05 20:48:56
这里的代码使用实例变量title
def __str__(self):
return self.title当Python“查看”你的变量时，它发现self.title从来没有声明过，因此你得到了一个错误。为了解决这个问题，我会给你的模型添加标题：
class update_grid(models.Model):
title = models.CharField(max_length=30)
data = JSONField()
def __str__(self):
return self.title我希望它能帮上忙
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/49119011
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