UndefinedError: 'BlogInfo' is undefined

[zhanggc2019]

File "d:\program files\python36\lib\site-packages\flask\app.py", line 2309, in call
return self.wsgi_app(environ, start_response)
File "d:\program files\python36\lib\site-packages\flask\app.py", line 2295, in wsgi_app
response = self.handle_exception(e)
File "d:\program files\python36\lib\site-packages\flask\app.py", line 1741, in handle_exception
reraise(exc_type, exc_value, tb)
File "d:\program files\python36\lib\site-packages\flask_compat.py", line 35, in reraise
raise value
File "d:\program files\python36\lib\site-packages\flask\app.py", line 2292, in wsgi_app
response = self.full_dispatch_request()
File "d:\program files\python36\lib\site-packages\flask\app.py", line 1815, in full_dispatch_request
rv = self.handle_user_exception(e)
File "d:\program files\python36\lib\site-packages\flask\app.py", line 1718, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "d:\program files\python36\lib\site-packages\flask_compat.py", line 35, in reraise
raise value
File "d:\program files\python36\lib\site-packages\flask\app.py", line 1813, in full_dispatch_request
rv = self.dispatch_request()
File "d:\program files\python36\lib\site-packages\flask\app.py", line 1799, in dispatch_request
return self.view_functionsrule.endpoint
File "D:\pycharmwork\Blog_mini\app\main\views.py", line 20, in index
pagination=pagination, endpoint='.index')
File "d:\program files\python36\lib\site-packages\flask\templating.py", line 135, in render_template
context, ctx.app)
File "d:\program files\python36\lib\site-packages\flask\templating.py", line 117, in _render
rv = template.render(context)
File "d:\program files\python36\lib\site-packages\jinja2\asyncsupport.py", line 76, in render
return original_render(self, *args, **kwargs)
File "d:\program files\python36\lib\site-packages\jinja2\environment.py", line 1008, in render
return self.environment.handle_exception(exc_info, True)
File "d:\program files\python36\lib\site-packages\jinja2\environment.py", line 780, in handle_exception
reraise(exc_type, exc_value, tb)
File "d:\program files\python36\lib\site-packages\jinja2_compat.py", line 37, in reraise
raise value.with_traceback(tb)
File "D:\pycharmwork\Blog_mini\app\templates\index.html", line 2, in top-level template code
{% import "_macros.html" as macros %}
File "D:\pycharmwork\Blog_mini\app\templates\base.html", line 8, in top-level template code
{% block title %}
File "D:\pycharmwork\Blog_mini\app\templates\base.html", line 9, in block "title"
{{ BlogInfo.query.first().title }}
File "d:\program files\python36\lib\site-packages\jinja2\environment.py", line 430, in getattr
return getattr(obj, attribute)
jinja2.exceptions.UndefinedError: 'BlogInfo' is undefined

请问这是什么原因，，

[xpleaf]

问题解决了吗？看到你是在win下跑的代码，这个不好确定，你debug一下，在渲染这个页面的时候，BlogInfo这个对象有没有传进去。

[zhanggc2019]

前段时间忙于其他事情，缺失在win上跑的，没有部署，其他数据库什么的都成功了，老是报这个错，不知道为啥，另外falsk版本我的是1.0.2的，里面的相关版本差异代码我已经改了，这个错误一直没解决

[xpleaf]

嗯，如果都能跑起来的话，你debug一下这段出错的代码，看看是哪出的问题。

[zhanggc2019]

多谢博主，是我的启动方式出了问题，现在可以了

[xpleaf]

OK