ruby on rails - rescue_from not working with ActionController::BadRequest -


using Rail 4, I'll work with rescue_from with ActionController :: BadRequest can not be found for :

application_controller.rb 

  rescue_from ActionController :: BadRequest, with: raise_bad_request def raise_bad_request (Nothing present: true, position: 404) end    
 
 
 inside the controller You have to  rescue_from  to collect errors only (in action, views or filters) inside your controller.  
 It looks like  Passes the ActionController :: BadRequest  route (middleware stack before requesting to do the controller somewhere).  
 If you write your middle class this way, then you can take action on such errors:  
  class HandleErrorsMiddleware def initialize (app) @app = app End DIF Call (env) @ app call (env) Rescue control: BadRequest ApplicationController.action (raise_bad_request) .call (env) End End   
  raise_bad_request   ApplicationController   
 You must add this middleware to  config / application.rb  
  config.middleware .insert_before 'ActionDispatch :: ParamsParser', 'HandleErrorsMiddleware'

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