Rails 生成器 - 生成器中的多个数组参数返回“未为所需参数提供值”；

Question

我编写了这个生成器来获取多个数组参数

class TestScaffoldGenerator < Rails::Generators::NamedBase

  #template source
  source_root File.expand_path("../templates", __FILE__)

  #scaffold_name argument
  argument :fields, :type => :array, :required => true, :desc => "required"
  argument :validations, :type => :array, :required => true, :desc => "required"
  argument :displays_back, :type => :array, :required => true, :desc => "required"
  argument :displays_front, :type => :array, :required => true, :desc => "required"


  #gem_dependancies
  gem("haml")

  #initial generator method
  def generate_test_scaffold
    template "model.rb.erb", "app/models/#{file_name}.rb"
  end

  #private methods do get run when generator is initiated
  private

    #scaffold_name to underscore gives filename
    def file_name
      class_name.demodelize
    end

end

当我运行“rails g test_scaffold”时，我不知道如何表示数组参数的结尾和另一个数组参数的开始... 我尝试过还有更多：

'rails g test_scaffold name:string string black white'
'rails g test_scaffold name:string, string, black, white'
'rails g test_scaffold [name:string] [string] [black] [white]'
'rails g test_scaffold [name:string], [string], [black], [white]'
'rails g test_scaffold {name:string} {string} {black} {white}'
'rails g test_scaffold {name:string}, {string}, {black}, {white}'

但我总是收到错误“没有为所需参数'字段'，'验证'，'displays_back'，'displays_front'提供值”

我真的不知道如何表示数组......有什么建议吗？

Answer 1

运行查看帮助

rails generate test_scaffold

您可以像这样传递数组选项

rails generate test_scaffold User --fields name age

User 是脚手架名称，可以像这样获取字段

options["fields"]
#=> ["name", "age"]