bugstack for Ruby & Rails

Auto-fix NoMethodError nil:NilClass, ActiveRecord::RecordNotFound, and nil-related errors in Rails.

What Ruby Errors bugstack Fixes

• NoMethodError: undefined method for nil:NilClass — calling methods on nil objects
• ActiveRecord::RecordNotFound — querying for records that don't exist
• ArgumentError: wrong number of arguments — method arity mismatches
• NameError: uninitialized constant — referencing undefined classes or modules

Install the SDK

Add bugstack to your Gemfile:

gem install bugstack-sdk

Or add it to your Gemfile and bundle:

# Gemfile
gem 'bugstack-sdk'

bundle install

Then initialize it in an initializer:

# config/initializers/bugstack.rb
Bugstack.configure do |config|
  config.api_key = ENV["BUGSTACK_API_KEY"]
end

Example Fix

bugstack detects a NoMethodError caused by calling a method on nil and writes a surgical fix:

def show
  @user = User.find_by(id: params[:id])
  @email = @user.email
end

# Runtime error when user is nil:
# NoMethodError: undefined method
#   'email' for nil:NilClass

def show
  @user = User.find_by(id: params[:id])
  if @user.nil?
    head :not_found
    return
  end
  @email = @user.email
end

Related Error Guides

• Fix ActiveRecord::RecordNotFound in Rails
• Fix ArgumentError: wrong number of arguments in Rails
• Fix NoMethodError for nil:NilClass in Rails
• Fix ActionController::RoutingError in Rails