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# config/initializers/exception_notification_config.rb
# filter_parametersメソッドが protected method のため__send__で呼ぶ
module ExceptionNotifierHelper
  def filter_sensitive_post_data_parameters(parameters)
    # exclude_raw_post_parameters? ? @controller.filter_parameters(parameters) : parameters
    exclude_raw_post_parameters? ? @controller.__send__(:filter_parameters, parameters) : parameters
  end
  
  def filter_sensitive_post_data_from_env(env_key, env_value)
    return env_value unless exclude_raw_post_parameters?
    return PARAM_FILTER_REPLACEMENT if (env_key =~ /RAW_POST_DATA/i)
    # return @controller.filter_parameters({env_key => env_value}).values[0]
    return @controller.__send__(:filter_parameters, {env_key => env_value}).values[0]
  end
end

<%# app/views/exception_notifier/_session.rhtml %>
<%- unless @request.env['rack.session'].nil? || @request.env['rack.session'].empty? -%>
<%- @request.env['rack.session'].keys.map{|k|k.to_s}.sort.each do |key| -%>
* <%= key %>: <%= PP.pp(@request.env['rack.session'][key.to_sym],"").gsub(/\n/, "\n  ").strip %>
<%- end -%>
<%- end -%>

<%# app/views/exception_notifier/_environment.rhtml %>
<% max = @request.env.keys.max { |a,b| a.length <=> b.length } -%>
<% @request.env.keys.select{|key| key =~ /^[A-Z|_]+$/ }.sort.each do |key| -%>
* <%= "%-*s: %s" % [max.length, key, filter_sensitive_post_data_from_env(key, @request.env[key].to_s.strip)] %>
<% end -%>

* Process: <%= $$ %>
* Server : <%= `hostname -s`.chomp %>