0

次のように、入力プロセス中に検証が行われます。

validates :solids, :numericality => { :greater_than_or_equal_to => 0 }, :if => lambda { 
  if self.lab_method_id
    lab_method = LabMethod.find(self.lab_method_id)
    lab_method.solids?
  end
}

ドロップダウンボックスの選択したIDに基づいて、この条件を変更したいと思います。

私は自分のモデルでこれを試しました：

if self.lab_method_id == 1
validates :solids, :numericality => { :greater_than_or_equal_to => 0 }, :if => lambda { 
  if self.lab_method_id
    lab_method = LabMethod.find(self.lab_method_id)
    lab_method.solids?
  end
}
elsif
validates :solids, :numericality => { :greater_than_or_equal_to => 5 }, :if => lambda { 
  if self.lab_method_id
    lab_method = LabMethod.find(self.lab_method_id)
    lab_method.solids?
  end
}
end

ただし、これによりページの読み込み時にエラーが返されました。

未定義のメソッド`key？ ' nilの場合：NilClass

これは、モデルの検証がページの読み込み時に読み込まれるという事実と関係があり、その時点でIDをチェックするifステートメントが機能しないことを理解しました。このエラーは私にはまったく意味がありませんが。

それで、選択したドロップダウンボックスアイテムのIDに基づいて特定の検証が選択されるように設定する方法を考えています（IDを正しく取得していますか？）

ボーナス：誰かがこの特定のエラーとの関係を説明できますか？

編集-スタックトレース：

visible_action?' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/hide_actions.rb:18:inベンダー/バンドル/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/hide_actions.rb:36:inmethod_for_action'vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1 /lib/action_controller/metal/implicit_render.rb:14:in method_for_action' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/compatibility.rb:61:inmethod_for_action'vendor / bundle / ruby​​ / 1.9.1 / gems / actionpack-3.2.1 / lib / abstract_controller / base.rb：115：in process' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/abstract_controller/rendering.rb:45:inprocess' vendor / bundle /ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal.rb:203:indispatch'vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/ dispatch' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/rack_delegation.rb:14:in_ metal.rb：246：in call'vendor block in action' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:66:in/ bundle / ruby​​ /1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:66:in call'vendor / dispatch' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:30:inbundle / ruby​​/1.9。 1 / gems / journal-1.0.4 / lib / journal / router.rb：68：inblock in call' vendor/bundle/ruby/1.9.1/gems/journey-1.0.4/lib/journey/router.rb:56:in各'vendor/ bundle / ruby​​ / 1.9.1 / gems / journal-1.0.4 / lib / journal / router.rb：56：in call' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:589:incall' vendor / bundle / ruby​​ /1.9.1/gems/warden-1.2.1 /lib/warden/manager.rb:35:in catch'vendor block in call' vendor/bundle/ruby/1.9.1/gems/warden-1.2.1/lib/warden/manager.rb:34:in/ bundle / ruby​​ /1.9.1/gems/warden-1.2.1/lib/warden/manager.rb:34:in call'vendor call' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/best_standards_support.rb:17:in/ bundle / ruby /1.9.1/gems/rack-1.4.1/lib/rack/etag.rb:23:in call'vendor call' vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/conditionalget.rb:25:in/ bundle / ruby​​ /1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/ head.rb：14：in call'vendor call' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/params_parser.rb:21:in/ bundle / ruby​​ / 1.9.1 / gems / actionpack-3.2.1 / lib / action_dispatch / middleware / flash.rb：242：in call' vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/session/abstract/id.rb:205:incontext' vendor / bundle / ruby​​/1.9。 1 /gems/rack-1.4.1/lib/rack/session/abstract/id.rb:200:in call'vendor call' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/cookies.rb:338:in/ bundle / ruby​​ / 1.9.1 / gems / activerecord-3.2.1 / lib / active_record / query_cache .rb：64：incall' vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:443:incall'vendor / bundle / ruby​​ / 1.9.1 / gems / actionpack-3.2.1 / lib / action_dispatch / middleware / callbacks.rb：28：in block in call' vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:405:inrun _803795940_ call _68852270__callbacks' vendor / bundle / ruby​​ / 1.9.1 / gems / activesupport-3.2.1 / lib / active_support / callbacks.rb：405：in __run_callback' vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:385:in_run_call_callbacks'vendor / bundle / ruby​​ / 1.9.1 / gems / activesupport-3.2.1 / lib / active_support / callbacks.rb：81：in run_callbacks' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/callbacks.rb:27:incall'ベンダーcall' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/remote_ip.rb:31:in/バンドル/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/reloader.rb:65:incall'vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1 /lib/action_dispatch/middleware/debug_exceptions.rb:16:in call'vendor call' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/show_exceptions.rb:56:in/ bundle / ruby​​ /1.9.1/gems/railties-3.2.1/lib/rails/rack/logger.rb:26:in call_app' vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/rack/logger.rb:16:incall' config /initializers/quiet_assets.rb:6:incall_with_quiet_assets' vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/request_id.rb:22:in「vendor/bundle / ruby​​ / 1.9.1 / gems / Rack-1.4.1 / lib / Rack / methodoverride.rb：21：incall call' vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/runtime.rb:17:in」vendor/ bundle / ruby​​ / 1.9.1 / gems / activesupport-3.2.1 /lib/active_support/cache/strategy/local_cache.rb:72:in call'vendor call' vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/lock.rb:15:in/ bundle / ruby​​ /1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/static.rb:53:in call' vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/engine.rb:479:incall 'vendor / bundle / ruby​​ / 1.9.1 / gems / railties-3.2.1 / lib / rails / application.rb：220：in call' vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/content_length.rb:14:incall' vendor / bundle / ruby​​ / 1.9.1 / gems / railties-3.2.1 / lib / rails / Rack / log_tailer.rb：14：in call' vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/handler/webrick.rb:59:inservice' /usr/lib/ruby/1.9.1/webrick/httpserver.rb:138:in service' /usr/lib/ruby/1.9.1/webrick/httpserver.rb:94:inrun' /usr/lib/ruby/1.9.1/webrick/ server.rb：191：in `block in start_thread '

4

1 に答える 1

1

NumericalityValidator（このヘルパーの基礎となるバリデーター）は、動的条件では希望どおりに機能しません。カスタムバリデーターを使用します。

validate :solids_validation

def solids_validation
  if self.lab_method_id
    lab_method = LabMethod.find(self.lab_method_id)
    if lab_method.solids?
      if (val = Kernel.Float(solids) rescue nil)
        min = (self.lab_method_id == 1 ? 0 : 5)
        errors.add(:solids, "must be greater than or equal to #{min}") if val < min
      else
        errors.add(:solids, :not_a_number)
      end
    end
  end
end
于 2013-01-28T18:28:12.013 に答える