Flask报错RuntimeError: No application found. Either work inside a view function or push an applicatiio

该错误是由于flask的上下文不完整引起的，当你在视图函数以外使用flask_sqlalchemy对数据库进行操作，flask会因为上下文不完整报这个错误：

No application found. Either work inside a view function or push an application context.

解决方案

目前网上搜到的解决方案过于麻烦，其实官方文档已经给出了答案：

即只需要在该模块下引入你的create_app，然后在数据库操作前加上一句with app.app_context():，即可解决。
官方文档地址如下：https://flask-sqlalchemy.palletsprojects.com/en/2.x/contexts/

Flask报错RuntimeError: No application found. Either work inside a view function or push an applicatiio相关推荐

Flask 报错 RuntimeError: No application found. Either work inside a view function or push an applicati
https://blog.csdn.net/zhongqiushen/article/details/79162792
Intel Realsense D435运行报错 RuntimeError: Camera not connected! dev.hardware_reset()函数需加睡眠sleep()
解决方案: 参考:Intel Realsense D435报错 RuntimeError: MFCreateDeviceSource(_device_attrs, &_source) retu ...
Intel Realsense D435报错 RuntimeError: MFCreateDeviceSource(_device_attrs, _source) returned: HResult
解决方案:hardware_reset()后是不是应该延迟一段时间?不延迟就会报错,加个sleep? 该错误会与RuntimeError: Camera not connected!交替出现,注释掉h ...
spark报错： Yarn application has already ended! killed or unable to launch application master
1.美图 1.背景背景参考:Spark执行任务卡死:SparkException: Failed to connect to driver! unable to launch application ...
Javafx 报错Exception in Application start method java.lang.reflect.InvocationTargetException
Javafx 报错Exception in Application start method java.lang.reflect.InvocationTargetException 代码如下: imp ...
Intellig idea导入项目第一次运行报错- Error running ‘Application‘: Command line is too long—— 解决方法
Intellig idea导入项目第一次运行报错 Error running 'Application': Command line is too long. Shorten command line ...
blender报错“RuntimeError: Operator bpy.ops.object.mode_set.poll() Context missing active object”
bpy.ops.mesh.select_all(action='SELECT') 报错 RuntimeError: Operator bpy.ops.object.mode_set.poll() Co ...
Flask报错:sqlite3.IntegrityError: NOT NULL constraint failed: step. date
Flask报错:sqlite3.IntegrityError: NOT NULL constraint failed: step. date 报错如图解决方法报错如图解决方法开始: db=co ...
使用pymysql报错RuntimeError ‘cryptography‘ package is required for sha256_password or caching_sha2_passw
使用pymysql连接MySql数据库报错RuntimeError: 'cryptography' package is required for sha256_password or caching ...

Flask报错RuntimeError: No application found. Either work inside a view function or push an applicatiio

解决方案

Flask报错RuntimeError: No application found. Either work inside a view function or push an applicatiio相关推荐

最新文章

热门文章