Redmine: 422 invalid form authenticity token
Solution 1
Some details for Redmine 3.4.2
If you get an error 422 (Can't verify CSRF token authenticity), you must go to controller file
/app/controller/aplication_controller.rb
and remove or comment string with code
render_error :status => 422, :message => "invalid form authenticity token."
then add code
redirect_back_or_default(home_path)
So, your code will be like this
# render_error :status => 422, :message => "invalid form authenticity token."
redirect_back_or_default(home_path)
Solution 2
For us, this error appeared when an already logged-on user tried to re-logon (eg. using multiple browser tabs). The solution is here, patch application_controller.rb:
- render_error "Invalid form authenticity token."
+ redirect_back_or_default home_path
Chanuka Ranaba
Updated on June 07, 2022Comments
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Chanuka Ranaba almost 2 years
I'm using this plugin to enable SSO between my IDP and redmine. Purpose is to avoid re entering username and password when login to the redmine. Both Redmine and the IDP connected to an external LDAP. Problem is after redirecting back to the redmine from my IDP (after entering username & password), It's giving this error.
Redmine version: 2.5.2, Ruby version: 1.9.3, Rails version: 3.2.19