Mailboxer:无法销毁对象

Question

我正在尝试销毁我的ROR应用程序中的一个对象。

但我得到以下错误：

ActiveRecord::StatementInvalid: PG::UndefinedTable: ERROR:  relation "mailboxer_conversation_opt_outs" does not exist
LINE 5:                WHERE a.attrelid = '"mailboxer_conversation_o...
                                          ^
:               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                     pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
                FROM pg_attribute a LEFT JOIN pg_attrdef d
                  ON a.attrelid = d.adrelid AND a.attnum = d.adnum
               WHERE a.attrelid = '"mailboxer_conversation_opt_outs"'::regclass
                 AND a.attnum > 0 AND NOT a.attisdropped
               ORDER BY a.attnum

    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql_adapter.rb:592:in `async_exec'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql_adapter.rb:592:in `block in exec_no_cache'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_adapter.rb:472:in `block in log'
    from /app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_adapter.rb:466:in `log'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql_adapter.rb:592:in `exec_no_cache'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql_adapter.rb:584:in `execute_and_clear'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:160:in `exec_query'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql_adapter.rb:733:in `column_definitions'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql/schema_statements.rb:186:in `columns'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/schema_cache.rb:43:in `columns'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/schema_cache.rb:49:in `columns_hash'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/associations/association_scope.rb:85:in `column_for'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/associations/association_scope.rb:94:in `bind'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/associations/association_scope.rb:103:in `last_chain_scope'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/associations/association_scope.rb:139:in `add_constraints'
... 72 levels...
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/transactions.rb:281:in `block in destroy'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/transactions.rb:351:in `block in with_transaction_returning_status'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract/transaction.rb:184:in `within_new_transaction'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/transactions.rb:220:in `transaction'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/transactions.rb:348:in `with_transaction_returning_status'
    from /app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/transactions.rb:281:in `destroy'
    from (irb):5
    from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/console.rb:110:in `start'
    from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/console.rb:9:in `start'
    from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.5.1/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'

我猜这与我的应用程序中没有的这个mailboxer_conversation_opt_outs表有关。

我使用的是Rails 4.2和：

mailboxer (0.13.0)
  carrierwave (>= 0.5.8)
  foreigner (>= 0.9.1)
  rails (>= 3.2.0)

有没有我遗漏的迁移文件？

不管怎样，为什么我的对象连接到这个表，而实际的对象不能发送消息？

谢谢

Answer 1

是不是有什么迁移文件被我漏掉了？

可以，请参阅文档的itsnikolay's answer和Upgrading部分。

不管怎样，为什么我的对象连接到这个表，而实际的对象不能发送消息？

您的模型类可能仍在调用acts_as_messageable方法，该方法将Mailboxer::Models::Messageable模块包含到您的ActiveRecord类中，它在您的模型上执行declares several extra associations操作。如果您不关心升级Mailboxer，只想完全断开您的模型与Mailboxer的连接，只需删除acts_as_messageable行，您应该能够销毁您的记录，而不会出现任何失败的关联问题。

Answer 2

看起来您使用的是以前版本的Mailboxer。

尝试迁移到新的服务器上：

$ rails generate mailboxer:namespacing_compatibility
$ rails generate mailboxer:install -s
$ rake db:migrate

摘自文档：https://github.com/mailboxer/mailboxer#upgrading