I am on windows xp, with rails 3.1 and i use mysql2 0.2.6 but when i when i try to make a request like:
Product.all
i got this responce:
irb(main):001:0> Product.all ←[1m←[36m (0.0ms)←[0m ←[1mSHOW TABLES←[0m ←[1m←[35m (0.0ms)←[0m describe `products` ArgumentError: wrong number of arguments (3 for 2) from D:/projects/rails/_API/rake/ruby/1.9.1/gems/mysql2-0.2.6-x86-mingw32/lib/active_record/connection_adapters/mysql2_adapter.rb:634:in `select' from D:/projects/rails/_API/rake/ruby/1.9.1/gems/activerecord-3.1.0/lib/active_record/connection_adapters/abstract/database_statements.rb:18:in `select_all' from D:/projects/rails/_API/rake/ruby/1.9.1/gems/activerecord-3.1.0/lib/active_record/connection_adapters/abstract/query_cache.rb:63:in `select_all' from D:/projects/rails/_API/rake/ruby/1.9.1/gems/activerecord-3.1.0/lib/active_record/base.rb:470:in `find_by_sql' from D:/projects/rails/_API/rake/ruby/1.9.1/gems/activerecord-3.1.0/lib/active_record/relation.rb:111:in `to_a' from D:/projects/rails/_API/rake/ruby/1.9.1/gems/activerecord-3.1.0/lib/active_record/relation/finder_methods.rb:155:in `all' from D:in `all' from (irb):1 from D:/projects/rails/_API/rake/ruby/1.9.1/gems/railties-3.1.0/lib/rails/commands/console.rb:45:in `start' from D:/projects/rails/_API/rake/ruby/1.9.1/gems/railties-3.1.0/lib/rails/commands/console.rb:8:in `start' from D:/projects/rails/_API/rake/ruby/1.9.1/gems/railties-3.1.0/lib/rails/commands.rb:40:in `<top (required)>' from script/rails:6:in `require' from script/rails:6:in `<main>' my controller:
def index @products = Product.all respond_to do |format| format.html # index.html.erb format.json { render json: @products } end end my models :
class Product < ActiveRecord::Base define_index do indexes brand indexes name indexes denomination end end 
$ rake db:reset, also imho, bad choice windows