Question

在我的Ruby on Rails项目中，有一个名为obelisk的模块。在模块obelisk中，我有一个名为node的类。我有许多类型的节点，例如if，hangup，playback等。因此，在我的app/models/node.rb中，我有以下声明：

require_dependency Obelisk::Engine.root.join('app', 'models',  'obelisk/node.rb').to_s

# Extend the model here.
module Obelisk
  class Node
  end
end

在app/models/obelisk中，我有一个子目录app/models/obelisk/node，用于存放与所有这些不同类型的节点相关的文件。例如，我有一个app/models/obelisk/node/hangup.rb并带有以下声明：

require_dependency Obelisk::Engine.root.join('app', 'models',  'obelisk/node/hangup.rb').to_s

# Extend the model here.
module Obelisk
  class Node::Hangup
  end
end

我想创建一个表单，以便用户可以选择他们要创建的节点的类型。为此，我认为需要在Obelisk模块中获取所有不同类型节点的名称。也就是说，获取使用['hangup', 'if', 'playback'...]，class Node::Hangup，Class Node::If ...

声明的Class Node::Playback

我已经尝试过ObjectSpace.each_object(Class).select {|c| c.included_modules.include? Obelisk} 我也像How to get all class names in a namespace in Ruby?

那样尝试过Obelisk::Node.constants.select {|c| Obelisk::Node.const_get(c).is_a? Class}

此输出为：

[:StringKeyedHashAccessor, :IndifferentHashAccessor, :IndifferentCoder, :HashAccessor, :RuntimeReflection, :AggregateReflection, :HasManyReflection, :HasOneReflection, :BelongsToReflection, :ThroughReflection, :MacroReflection, :PolymorphicReflection, :AbstractReflection, :HasAndBelongsToManyReflection, :AssociationReflection, :TooManyRecords, :BelongsToPolymorphicAssociation, :HasManyAssociation, :HasManyThroughAssociation, :HasOneAssociation, :HasOneThroughAssociation, :Preloader, :JoinDependency, :AssociationScope, :AliasTracker, :CollectionProxy, :Association, :SingularAssociation, :CollectionAssociation, :BelongsToAssociation, :TimeZoneConverter, :GeneratedAttributeMethods, :TypeDecorator, :PresenceValidator, :LengthValidator, :UniquenessValidator, :AbsenceValidator, :AssociatedValidator, :CallbackSequence, :Callback, :CallTemplate, :CallbackChain, :NumericalityValidator, :WithValidator, :ConfirmationValidator, :ExclusionValidator, :FormatValidator, :AcceptanceValidator, :InclusionValidator, :ScopeRegistry]

，这不是我想要的。

Obelisk::Node.constants.select{|c| Obelisk::Node.const_get(c).is_a? Class}的输出为

[:StringKeyedHashAccessor, :IndifferentHashAccessor, :IndifferentCoder, :HashAccessor, :RuntimeReflection, :AggregateReflection, :HasManyReflection, :HasOneReflection, :BelongsToReflection, :ThroughReflection, :MacroReflection, :PolymorphicReflection, :AbstractReflection, :HasAndBelongsToManyReflection, :AssociationReflection, :TooManyRecords, :BelongsToPolymorphicAssociation, :HasManyAssociation, :HasManyThroughAssociation, :HasOneAssociation, :HasOneThroughAssociation, :Preloader, :JoinDependency, :AssociationScope, :AliasTracker, :CollectionProxy, :Association, :SingularAssociation, :CollectionAssociation, :BelongsToAssociation, :TimeZoneConverter, :GeneratedAttributeMethods, :TypeDecorator, :PresenceValidator, :LengthValidator, :UniquenessValidator, :AbsenceValidator, :AssociatedValidator, :CallbackSequence, :Callback, :CallTemplate, :CallbackChain, :NumericalityValidator, :WithValidator, :ConfirmationValidator, :ExclusionValidator, :FormatValidator, :AcceptanceValidator, :InclusionValidator, :ScopeRegistry]，同样不是我想要的。

但是到目前为止没有任何效果。

谢谢。

Ruby在模块中获取所有类

0 个答案: