mysql2 rails3.1错误

我在Windows XP上，护栏3.1 我用mysql2 0.2.6 但是当我当我试图提出一个要求，如：mysql2 rails3.1错误

Product.all

我得到这个性反应：

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>'

我的控制器：

def index 
    @products = Product.all 

    respond_to do |format| 
     format.html # index.html.erb 
     format.json { render json: @products } 
    end 
    end

我的模型：

class Product < ActiveRecord::Base 
    define_index do 
    indexes brand 
    indexes name 
    indexes denomination 
    end 
end

来源

2011-10-06 Noxs

您的控制器代码没有用，迁移可能更有趣，您是否也尝试重置您的数据库？ '$ rake db：reset'，也是imho，不错的选择窗口 – ecoologic

没有其他的我不认为迁移可以在这里帮助...我会尝试不同的宝石组合 – ecoologic

mysql2 0.2.6与Rails 3.1不兼容。您应该将Rails降级到3.0.7或将mysql2升级到0.3.1。

来源

2012-01-02 16:37:15 Ypp

mysql2 rails3.1错误

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