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Flask add a back button

Flask add a back button

From:
k_q_11
Date:
2015-06-24 @ 20:07
I have googling around to find a simple way to create a 'back' button to 
go to the previous page, like the back button in the browser. If the back 
button just redirect to the last "view", the user data filled in the form 
in the previous page will be lost. How can I prevent such loss without 
programming to retrieving the data in the last "view"?