Rails迁移错误 - 名称不能为空

时间：2013-07-11 04:08:01

标签： ruby-on-rails database-migration ruby-on-rails-2 rails-migrations

我正在使用rails 2.x版本。我使用mysql 5.0数据库进行后端处理。当我执行以下步骤时，我遇到了迁移错误。

  1. 从github获取应用程序代码。
  2. 运行架构：创建，加载和种子处理
  3. 之后在应用程序中添加一些数据。
  4. 再次从同一分支中提取代码。
  5. 之后我运行db：migrate会引发以下错误
    6. -> rake db:migrate --trace
DEPRECATION WARNING: Rake tasks in vendor/plugins/acts_as_audited/tasks,
         

    供应商/插件/ annotate_models /任务，   vendor / plugins / app_version / tasks，vendor / plugins / bullet / tasks，   vendor / plugins / importer / tasks，vendor / plugins / mimetype-fu / tasks，   vendor / plugins / railsdav / tasks，vendor / plugins / rav / tasks，   vendor / plugins / simple_captcha / tasks，vendor / plugins / smart_table / tasks，   供应商/插件/ test_data_generator /任务，   vendor / plugins / visualize_models / tasks，和   vendor / plugins / xss_terminate / tasks已弃用。使用lib / tasks   代替。 （来自   /usr/lib/ruby/gems/1.8/gems/rails-2.3.12/lib/tasks/rails.rb:10）

    ** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environmentThu 11 Jul 2013 09:24:36 AM IST
** Execute db:migrate
==  ConvertOrganizationToAwesomeNestedSet: migrating ==========================
Running sample patched rebuild process.
rake aborted!
An error has occurred, all later migrations canceled:

Validation failed: Name can't be blank
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/validations.rb:1102:in
         

    save_without_dirty!' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/dirty.rb:87:in save_without_transactions！       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/transactions.rb:200:in   save!' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/connection_adapters/abstract/database_statements.rb:136:in 交易”       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/transactions.rb:182:in   transaction' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/transactions.rb:200:in 救人！”       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/transactions.rb:208:in   rollback_active_record_state!' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/transactions.rb:200:in 救人！”       /opt/sample/lib/awesome_nested_set_overrides.rb:25:in rebuild!' /opt/sample/lib/awesome_nested_set_overrides.rb:22:in call'       /opt/sample/lib/awesome_nested_set_overrides.rb:22:in rebuild!' /opt/ssample/lib/awesome_nested_set_overrides.rb:22:in每个'       /opt/sample/lib/awesome_nested_set_overrides.rb:22:in rebuild!' /opt/sample/lib/awesome_nested_set_overrides.rb:32:in call'       /opt/sample/lib/awesome_nested_set_overrides.rb:32:in rebuild!' /opt/sample/lib/awesome_nested_set_overrides.rb:29:in每个'       /opt/sample/lib/awesome_nested_set_overrides.rb:29:in rebuild!' ./db/migrate//20130102220216_convert_organization_to_awesome_nested_set.rb:6:in up_without_benchmarks'       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:282:in   send' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:282:in 迁移”       /usr/lib/ruby/1.8/benchmark.rb:293:in measure' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:282:in migrate'       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:365:in   __send__' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:365:in 迁移”       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:491:in   migrate' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:567:in 称之为”       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:567:in   ddl_transaction' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:490:in 迁移”       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:477:in   each' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:477:in 迁移”       /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:401:in   up' /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.12/lib/active_record/migration.rb:383:in 迁移”       /usr/lib/ruby/gems/1.8/gems/rails-2.3.12/lib/tasks/databases.rake:112       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:228:in call' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:228:in执行'       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:223:in each' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:223:in执行'       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:166:in invoke_with_call_chain' /usr/lib/ruby/1.8/monitor.rb:242:in synchronize'       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:159:in invoke_with_call_chain' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/task.rb:152:in调用'       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:143:in   invoke_task' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:101:in TOP_LEVEL”       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:101:in   each' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:101:in TOP_LEVEL”       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:110:in   run_with_threads' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:95:in TOP_LEVEL”       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:73:in   run' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:160:in standard_exception_handling”       /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:70:in   run' /usr/lib/ruby/gems/1.8/gems/rake-10.0.3/bin/rake:33 /usr/bin/rake:19:in负载”       在/ usr / bin中/耙：19       任务：TOP =＆gt;分贝：迁移

    Organization.rebuild! - 这是调用插件的代码。

    似乎awesome_nested_set插件存在一些问题。过去一周我很挣扎。任何意见将不胜感激。

    编辑 - 1 

    class ConvertOrganizationToAwesomeNestedSet < ActiveRecord::Migration
 def self.up   
 #  add_column :party, :lft, :integer
 #  add_column :party, :rgt, :integer
      Organization.reset_column_information
      Organization.rebuild!
  end
   def self.down
      remove_column :party, :lft
      remove_column :party, :rgt
  end
end

    模型 - 组织

    class Organization < Party
attr_accessible :name,
                   :parent_id   
 default_scope :order => 'name'   
 acts_as_nested_set has_many :children, :class_name => 'Organization',
 :foreign_key => "parent_id"  
  belongs_to :parent, :class_name =>'Organization', :foreign_key => "parent_id"  
  def display_name
     name  
   end

2 个答案:

答案 0 :(得分：1)

您正在迁移中使用ActiveRecord模型类。简而言之：不要。

从长远来看，这可能会导致问题。如果您有一个使用模型类的迁移，而不是稍后再次运行它，那么如果有人更改了该模型类，您将遇到麻烦。

迁移严格用于设置数据库，并且应该构建为使它们始终以相同的方式运行 - 无论应用程序代码的当前状态如何。

如果您确实需要迁移到ActiveRecord模型：在迁移文件中定义该类。这样，对应用程序的其余部分进行更改将是不可变的。

答案 1 :(得分：0)

因为你正在

Validation failed: Name can't be blank

你必须有一个

validates_presence_of :name

某个地方，无论是在你的班级还是在插件中。

也许您的数据库中有一些无效的记录，当您重建时，它们会被保存（并经过验证），并且您会收到此错误。

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