make collected user attributes customizable

README.md

@@ -240,7 +240,7 @@ automatically in a controller, Airbrake sets that value. If you're, however, cal
 Current user information
 ------------------------
 Airbrake provides information about the current logged in user, so you
-could easily determine the user who experienced the error in your app.
+can easily determine the user who experienced the error in your app.
 
 It uses `current_user` and `current_member` to identify the
 authenticated user, where `current_user` takes precendence.
@@ -251,9 +251,23 @@ controller:
     alias_method :current_duck, :current_user
     helper_method :current_duck
 
-Voila! You'll get information about a duck that experienced crash about
+Voila! You'll get information about a duck that experienced a crash of
 your app.
 
+By default Airbrake collects the following attributes:
+* id
+* name
+* username
+* email
+
+You can also customize attributes that will be collected
+
+    Airbrake.configure do |config|
+      ...
+      # collect only user ids
+      config.user_attributes = [:id] # ["id"] also works
+    end
+
 Asynchronous notifications with Airbrake
 ----------------------------------------
 When your user experiences error using your application, it gets sent to

lib/airbrake/configuration.rb

@@ -100,9 +100,14 @@ class Configuration
     # (boolean or nil; set to nil to catch exceptions when rake isn't running from a terminal; default is nil)
     attr_accessor :rescue_rake_exceptions
 
+    # User attributes that are being captured
+    attr_accessor :user_attributes
+
 
     DEFAULT_PARAMS_FILTERS = %w(password password_confirmation).freeze
 
+    DEFAULT_USER_ATTRIBUTES = %w(id name username email).freeze
+
     DEFAULT_BACKTRACE_FILTERS = [
       lambda { |line|
         if defined?(Airbrake.configuration.project_root) && Airbrake.configuration.project_root.to_s != ''
@@ -152,6 +157,7 @@ def initialize
       @framework                = 'Standalone'
       @user_information         = 'Airbrake Error {{error_id}}'
       @rescue_rake_exceptions   = nil
+      @user_attributes          = DEFAULT_USER_ATTRIBUTES.dup
     end
 
     # Takes a block and adds it to the list of backtrace filters. When the filters

lib/airbrake/rails/controller_methods.rb

@@ -75,7 +75,9 @@ def airbrake_request_url
       def airbrake_current_user
         user = begin current_user rescue current_member end
         user.attributes.select do |k, v|
-          /^(id|name|username|email)$/ === k unless v.blank?
+          Airbrake.configuration.
+            user_attributes.map(&:to_sym).
+            include? k.to_sym unless v.blank?
         end.symbolize_keys
       rescue NoMethodError, NameError
         {}