111 lines
No EOL
4.2 KiB
Text
111 lines
No EOL
4.2 KiB
Text
= Exception Notifier Plugin for Rails
|
|
|
|
The Exception Notifier plugin provides a mailer object and a default set of
|
|
templates for sending email notifications when errors occur in a Rails
|
|
application. The plugin is configurable, allowing programmers to specify:
|
|
|
|
* the sender address of the email
|
|
* the recipient addresses
|
|
* the text used to prefix the subject line
|
|
|
|
The email includes information about the current request, session, and
|
|
environment, and also gives a backtrace of the exception.
|
|
|
|
== Usage
|
|
|
|
First, include the ExceptionNotifiable mixin in whichever controller you want
|
|
to generate error emails (typically ApplicationController):
|
|
|
|
class ApplicationController < ActionController::Base
|
|
include ExceptionNotifiable
|
|
...
|
|
end
|
|
|
|
Then, specify the email recipients in your environment:
|
|
|
|
ExceptionNotifier.exception_recipients = %w(joe@schmoe.com bill@schmoe.com)
|
|
|
|
And that's it! The defaults take care of the rest.
|
|
|
|
== Configuration
|
|
|
|
You can tweak other values to your liking, as well. In your environment file,
|
|
just set any or all of the following values:
|
|
|
|
# defaults to exception.notifier@default.com
|
|
ExceptionNotifier.sender_address =
|
|
%("Application Error" <app.error@myapp.com>)
|
|
|
|
# defaults to "[ERROR] "
|
|
ExceptionNotifier.email_prefix = "[APP] "
|
|
|
|
Email notifications will only occur when the IP address is determined not to
|
|
be local. You can specify certain addresses to always be local so that you'll
|
|
get a detailed error instead of the generic error page. You do this in your
|
|
controller (or even per-controller):
|
|
|
|
consider_local "64.72.18.143", "14.17.21.25"
|
|
|
|
You can specify subnet masks as well, so that all matching addresses are
|
|
considered local:
|
|
|
|
consider_local "64.72.18.143/24"
|
|
|
|
The address "127.0.0.1" is always considered local. If you want to completely
|
|
reset the list of all addresses (for instance, if you wanted "127.0.0.1" to
|
|
NOT be considered local), you can simply do, somewhere in your controller:
|
|
|
|
local_addresses.clear
|
|
|
|
== Customization
|
|
|
|
By default, the notification email includes four parts: request, session,
|
|
environment, and backtrace (in that order). You can customize how each of those
|
|
sections are rendered by placing a partial named for that part in your
|
|
app/views/exception_notifier directory (e.g., _session.rhtml). Each partial has
|
|
access to the following variables:
|
|
|
|
* @controller: the controller that caused the error
|
|
* @request: the current request object
|
|
* @exception: the exception that was raised
|
|
* @host: the name of the host that made the request
|
|
* @backtrace: a sanitized version of the exception's backtrace
|
|
* @rails_root: a sanitized version of RAILS_ROOT
|
|
* @data: a hash of optional data values that were passed to the notifier
|
|
* @sections: the array of sections to include in the email
|
|
|
|
You can reorder the sections, or exclude sections completely, by altering the
|
|
ExceptionNotifier.sections variable. You can even add new sections that
|
|
describe application-specific data--just add the section's name to the list
|
|
(whereever you'd like), and define the corresponding partial. Then, if your
|
|
new section requires information that isn't available by default, make sure
|
|
it is made available to the email using the exception_data macro:
|
|
|
|
class ApplicationController < ActionController::Base
|
|
...
|
|
protected
|
|
exception_data :additional_data
|
|
|
|
def additional_data
|
|
{ :document => @document,
|
|
:person => @person }
|
|
end
|
|
...
|
|
end
|
|
|
|
In the above case, @document and @person would be made available to the email
|
|
renderer, allowing your new section(s) to access and display them. See the
|
|
existing sections defined by the plugin for examples of how to write your own.
|
|
|
|
== Advanced Customization
|
|
|
|
By default, the email notifier will only notify on critical errors. For
|
|
ActiveRecord::RecordNotFound and ActionController::UnknownAction, it will
|
|
simply render the contents of your public/404.html file. Other exceptions
|
|
will render public/500.html and will send the email notification. If you want
|
|
to use different rules for the notification, you will need to implement your
|
|
own rescue_action_in_public method. You can look at the default implementation
|
|
in ExceptionNotifiable for an example of how to go about that.
|
|
|
|
|
|
Copyright (c) 2005 Jamis Buck, released under the MIT license |