Ruby on rails 3 rails_sql_视图未定义的方法'；基本表格'；关于mysql2

我需要创建视图，发现使用SQL创建视图会导致运行测试时出现问题

在我的开发系统sqlite3上，我将数据库迁移回滚到创建视图之前

我从gem添加了rails\u sql\u视图git://github.com/unleashed/rails_sql_views.

我修改了视图的迁移，因此现在

def up
 # dividing by 100 for percentages and 1000 for kW, hence 100000
create_view :view_sub_power_ratings,
  "select
        ((s.power_off * p.percent_off + s.standby * p.percent_standby + s.idle * p.percent_idle + s.normal * p.percent_normal + s.maximum * p.percent_max) * p.working_days * 24 +
        (s.power_off * percent_off_nw + s.standby * percent_standby_nw + s.idle * p.percent_idle_nw + s.normal * p.percent_normal_nw + s.maximum * percent_max_nw) * (365 - p.working_days) * 24) /100000
                                                               as power_usage,
        p.subscription_id,
        s.device_id
    from sub_category_params p
    inner join devices d on d.device_category_id = p.device_category_id
    inner join device_power_summaries s on  s.device_id = d.id"

# dividing by 100 for percentage accuracy, 100  for percent used, and 1000 for kW, hence 10000000


create_view :view_sub_power_ratings_variations,

"select

(s.standby * s.standby_accuracy * p.percent_standby + s.idle * s.idle_accuracy *p.percent_idle + s.normal * s.normal_accuracy * p.percent_normal +
 s.maximum * s.maximum_accuracy * p.percent_max + s.power_off * s.power_off_accuracy * p.percent_off) * 24 * p.working_days/ 10000000 as variation_wd,

(s.standby * s.standby_accuracy * p.percent_standby_nw + s.idle * s.idle_accuracy *p.percent_idle_nw + s.normal * s.normal_accuracy * p.percent_normal_nw +
 s.maximum * s.maximum_accuracy * p.percent_max_nw + s.power_off * s.power_off_accuracy * p.percent_off_nw) * 24 * (365-p.working_days)/ 10000000 as variation_nw,
        p.subscription_id,
        s.device_id
    from sub_category_params p
    inner join devices d on d.device_category_id = p.device_category_id
    inner join device_power_summaries s on  s.device_id = d.id"

  create_view :view_sub_power_maximums,
  "select
    r.power_usage + (v.variation_nw + v.variation_wd) as maximum_power_usage,
    r.power_usage - (v.variation_nw + v.variation_wd)   as minimum_power_usage,
          v.subscription_id,
        v.device_id
    from sub_category_params p
    inner join devices d on d.device_category_id = p.device_category_id
    inner join device_power_summaries s on  s.device_id = d.id
    inner join view_sub_power_ratings r on d.id = r.device_id and p.subscription_id = r.subscription_id
    inner join view_sub_power_ratings_variations v on  d.id = v.device_id and p.subscription_id = v.subscription_id"

end

def down
  drop_view :view_sub_power_ratings
  drop_view :view_sub_power_ratings_variations
  drop_view :view_sub_power_maximums
end

然后我再次运行迁移，一切都很好。将创建视图，并且create_视图位于schema.rb中。结果

但是，在部署到我的暂存服务器时，我在迁移过程中遇到了一个错误。这是在MySQL2上

这是痕迹

** Execute db:schema:dump
rake aborted!
undefined method `base_tables' for #<ActiveRecord::ConnectionAdapters::Mysql2Adapter:0xb876f1c>
/usr/local/rvm/gems/ruby-1.9.3-p125/bundler/gems/rails_sql_views-9d781715bcab/lib/rails_sql_views/schema_dumper.rb:98:in `tables_with_views_excluded'
/usr/local/rvm/gems/ruby-1.9.3-p125/gems/activerecord-3.2.1/lib/active_record/schema_dumper.rb:27:in `dump'
/usr/local/rvm/gems/ruby-1.9.3-p125/bundler/gems/rails_sql_views-9d781715bcab/lib/rails_sql_views/schema_dumper.rb:27:in `dump_with_views'
/usr/local/rvm/gems/ruby-1.9.3-p125/gems/activerecord-3.2.1/lib/active_record/schema_dumper.rb:21:in `dump'
/usr/local/rvm/gems/ruby-1.9.3-p125/gems/activerecord-3.2.1/lib/active_record/railties/databases.rake:354:in `block (4 levels) in <top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p125/gems/activerecord-3.2.1/lib/active_record/railties/databases.rake:352:in `open'
/usr/local/rvm/gems/ruby-1.9.3-p125/gems/activerecord-3.2.1/lib/active_record/railties/databases.rake:352:in `block (3 levels) in <top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/usr/local/rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/usr/local/rvm/gems/ruby-1.9.3-p125/gems/activerecord-3.2.1/lib/active_record/railties /databases.rake:161:in `block (2 levels) in <top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'  
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/usr/local/rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/usr/local/rvm/gems/ruby-1.9.3-p125/gems/activerecord-3.2.1/lib/active_record/railties/databases.rake:156:in `block (2 levels) in <top (required)>'   
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/usr/local/rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/bin/rake:19:in `load'
/usr/local/rvm/gems/ruby-1.9.3-p125@global/bin/rake:19:in `<main>'
Tasks: TOP => db:schema:dump

捆绑包安装运行正常：

 ** [out :: myserver.com] 
 ** [out :: myserver.com] Using rails_sql_views (0.8.0.1.unleashed) from git://github.com/unleashed/rails_sql_views (at master)
 ** [out :: myserver.com] 
 ** [out :: myserver.com] Using sass (3.1.15)
 ** [out :: myserver.com] * mysql2-0.3.11.gem
 ** [out :: myserver.com] Removing outdated .gem files from vendor/cache
 ** [out :: myserver.com] * rails_sql_views-0.8.0.gem
 ** [out :: myserver.com] Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
  command finished in 4018ms

我见过一些人报告类似的情况，解释是MySQL2没有适配器。但是它在lib/rails\u sql\u views/connection\u adapters目录中：mysql2\u adapter.rb

我瞥了一眼，发现了一种用于基本表的方法

那么我错过了什么？对不起，我知道这将是一件非常明显的事情，但我还没有完全弄清楚gems是如何集成到系统中的

---

非常感谢

当您向gem文件添加gem时，您需要运行

捆绑安装

这将查看您的gem文件是否已更改，如果已更改，例如添加了一个新的gem，它将转到源代码，提取gem代码，然后将其包含在您的应用程序中

---

要查看项目有哪些gem，只需查看从上一个bundle生成的Gemfile.lock文件。

将gem添加到Gemfile时，您需要运行

bundle install

这将查看您的gem文件是否已更改，如果已更改，例如添加了一个新的gem，它将转到源代码，提取gem代码，然后将其包含在您的应用程序中

---

要查看项目有哪些gem，只需查看从上一个bundle生成的Gemfile.lock文件。

我已将gem的源更改为：

git://github.com/centresource/rails_sql_views

---

这就解决了问题-迁移现在运行正常

我已将gem的来源更改为：

git://github.com/centresource/rails_sql_views

---

这解决了问题-迁移现在正常运行

捆绑包安装作为部署的一部分在Capistrano下运行。这样做没有错误，但是当它运行部署的迁移部分时，我看到上面的错误gem现在包含在登台的Gemfile.lock文件中了吗？我不认为这是绑定器问题，因为跟踪显示它在rails\u sql\u views/schema\u dumper.rb代码中，它正在查找并执行gem。好像没有包括为连接器提供的附加功能-更像是我需要一个requiresomewhere嗨，Michael-是的，它显示在dependencies下：rails\u sql\u views！它还显示在顶部：GIT remote:git://github.com/unleashed/rails_sql_views 修订版：9d781715bcab9842754ae8dc3c3b3799c03d112e规范：rails_sql_视图（0.8.0.1.已释放）ActiveRecord捆绑包安装作为部署的一部分在Capistrano下运行。这样做没有错误，但是当它运行部署的迁移部分时，我看到上面的错误gem现在包含在登台的Gemfile.lock文件中了吗？我不认为这是绑定器问题，因为跟踪显示它在rails\u sql\u views/schema\u dumper.rb代码中，它正在查找并执行gem。好像没有包括为连接器提供的附加功能-更像是我需要一个requiresomewhere嗨，Michael-是的，它显示在dependencies下：rails\u sql\u views！它还显示在顶部：GIT remote:git://github.com/unleashed/rails_sql_views 修订版：9d781715bcab9842754ae8dc3c3b3799c03d112e规范：rails_sql_视图（0.8.0.1.未发布）activerecord

 ** [out :: myserver.com] 
 ** [out :: myserver.com] Using rails_sql_views (0.8.0.1.unleashed) from git://github.com/unleashed/rails_sql_views (at master)
 ** [out :: myserver.com] 
 ** [out :: myserver.com] Using sass (3.1.15)
 ** [out :: myserver.com] * mysql2-0.3.11.gem
 ** [out :: myserver.com] Removing outdated .gem files from vendor/cache
 ** [out :: myserver.com] * rails_sql_views-0.8.0.gem
 ** [out :: myserver.com] Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
  command finished in 4018ms