add_filter throwing exception

[jschuman]

Migrating from 4.3.4 to 5.0.1 and when I try to configure Airbrake using an inline add_filter, I'm getting an exception.

I've got the add_filter just like in the migration_guide for testing purposes:

Airbrake.add_filter do |notice|
  if notice[:errors].any? { |error| error[:type] == 'RuntimeError' }
    notice.ignore!
  end
end

In a rails console I try this:

2.1.6 :003 > e = Exception.new("Hello World")
 => #<Exception: Hello World> 
2.1.6 :004 > Airbrake.notify(e)
NoMethodError: undefined method `call' for nil:NilClass
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/airbrake-ruby-1.0.0/lib/airbrake-ruby/filter_chain.rb:64:in `block in refine'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/airbrake-ruby-1.0.0/lib/airbrake-ruby/filter_chain.rb:62:in `each'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/airbrake-ruby-1.0.0/lib/airbrake-ruby/filter_chain.rb:62:in `refine'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/airbrake-ruby-1.0.0/lib/airbrake-ruby/notifier.rb:123:in `send_notice'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/airbrake-ruby-1.0.0/lib/airbrake-ruby/notifier.rb:45:in `notify'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/airbrake-ruby-1.0.0/lib/airbrake-ruby.rb:280:in `call_notifier'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/airbrake-ruby-1.0.0/lib/airbrake-ruby.rb:134:in `notify'
    from (irb):4
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/railties-4.2.5/lib/rails/commands/console.rb:110:in `start'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/railties-4.2.5/lib/rails/commands/console.rb:9:in `start'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/jschuman/.rvm/gems/ruby-2.1.6@kona/gems/railties-4.2.5/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

If I switch the filter to be a class and new up that class in the add_filter call then it works fine.

[kyrylo]

Hey, thanks for the report! It's a bug. I'm already working on the fix.