Flask CRUD
About Lesson

In this Flask CRUD Application lesson we are going to learn about Flask CRUD Application Flash Messages, Flask provides a really simple way to give feedback to a user with the flashing message system. The flashing system basically makes it possible to record a message at the end of a request and access it next request and only next request. This is usually combined with a layout template that does this. Note that browsers and sometimes web servers enforce a limit on cookie sizes. This means that flashing messages that are too large for session cookies causes message flashing to fail silently.




Open your App.py file and in the insert method add your Flash Message in flask.




This is the complete code for App.py file.




Now we need to show our flash message so open your index.html file, and add this code after the Add button.




This is the complete code for index.html.












Run your application and add new data, you can see the flash message.

Flask CRUD Application Flash Messages
Flask CRUD Application Flash Messages