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Add warning for `rescue_from Exception` and `rescue_from StandardError`

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1 parent eeb9a7c commit 3fab50a9d7a77719f5d1bd12f1996261c6ba14b1 Yuki Nishijima committed Jun 20, 2014
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  1. +2 −0 guides/source/action_controller_overview.md
@@ -1164,6 +1164,8 @@ class ClientsController < ApplicationController
end
```
+WARNING: You shouldn't do `rescue_from Exception` or `rescue_from StandardError` unless you have a particular reason as it will cause serious side-effects (e.g. you won't be able to see exception details and tracebacks during development). If you would like to dynamically generate error pages, see [Custom errors page](#custom-errors-page).
+
NOTE: Certain exceptions are only rescuable from the `ApplicationController` class, as they are raised before the controller gets initialized and the action gets executed. See Pratik Naik's [article](http://m.onkey.org/2008/7/20/rescue-from-dispatching) on the subject for more information.

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