一行:Dir['app/models/\*.rb']。map {|f|文件。basename .camelize (f,“。*”)。constantize}

我还不能评论，但我认为sj26的答案应该是首要答案。提示一下:

Rails.application.eager_load! unless Rails.configuration.cache_classes
ActiveRecord::Base.descendants

Module.constants.select { |c| (eval c).is_a?(Class) && (eval c) < ActiveRecord::Base }

ActiveRecord::Base.connection.tables.map do |model|
  model.capitalize.singularize.camelize
end

将返回

["Article", "MenuItem", "Post", "ZebraStripePerson"]

附加信息如果你想在对象名上调用一个没有model:string未知方法或变量错误的方法，使用这个

model.classify.constantize.attribute_names

我寻找了很多方法，最后选择了这种方式:

in the controller:
    @data_tables = ActiveRecord::Base.connection.tables

in the view:
  <% @data_tables.each do |dt|  %>
  <br>
  <%= dt %>
  <% end %>
  <br>

来源:http://portfo.li/rails/348561-how-can-one-list-all-database-tables-from-one-project

就一句话:

 ActiveRecord::Base.subclasses.map(&:name)