~/.irbrc file contains these helpers for performing sql queries and outputting raw database (SQL or MongoDB) queries to the console. Just add them to your home directory’s .irbrc file to have these methods available in IRB or the Rails console.
# Output ActiveRecord-generated queries to the console def log_to_console ActiveRecord::Base.logger = Logger.new(STDOUT) reload! end # Execute arbitrary SQL selects def sql(query) ActiveRecord::Base.connection.select_rows(query) end # Output Mongoid-generated queries to the console def log_mongo_to_console # For mongoid 2: # Mongoid.config.logger = Logger.new(STDOUT) Mongoid.logger = Logger.new(STDOUT) Moped.logger = Mongoid.logger end # The list of methods to which obj responds. def m(obj) obj.methods.sort - Object.methods end