如何将数组作为分隔参数传递给方法

Question

这似乎与我需要的接近，但它对我无效。

Achieving `call_user_func_array` in Ruby

我作为恒

TYPE = %w(:groups :projects) 

我在具有

enumerize :list_type, in: %w(groups projects), scope: :type 

所以按照文档GitHub的网页上我的RelatedList模型中使用https://github.com/brainspec/enumerize，

列表

RelatedList.type(:groups) # returns all RelatedList of type 'groups' 

不过，我想包含在我的不断TYPE

所有RelatedList所以我试图

RelatedList.type(TYPE) # doesn't work 
RelatedList.send(:type, TYPE) # doesn't work 
RelatedList.send(:type, *TYPE) # doesn't work. 

RelatedList.type预计为符号的独立参数列表，但我有什么是符号的阵列。

我该如何做到这一点？

---

根据DNNX请求在下面的回答中，这里是完整的回溯。

NoMethodError: undefined method `value' for nil:NilClass 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/bundler/gems/enumerize-bc01a5cb3c79/lib/enumerize/activerecord.rb:34:in `block (2 levels) in _define_scope_methods!' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/bundler/gems/enumerize-bc01a5cb3c79/lib/enumerize/activerecord.rb:34:in `map' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/bundler/gems/enumerize-bc01a5cb3c79/lib/enumerize/activerecord.rb:34:in `block in _define_scope_methods!' 
    from (irb):2 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/commands/console.rb:90:in `start' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/commands/console.rb:9:in `start' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus/rails.rb:134:in `console' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:116:in `block in command' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:103:in `fork' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:103:in `command' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:80:in `block (3 levels) in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:80:in `fork' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:80:in `block (2 levels) in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:73:in `each' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:73:in `block in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:62:in `loop' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:62:in `go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:78:in `block (3 levels) in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:78:in `fork' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:78:in `block (2 levels) in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:73:in `each' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:73:in `block in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:62:in `loop' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:62:in `go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:78:in `block (3 levels) in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:78:in `fork' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:78:in `block (2 levels) in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:73:in `each' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:73:in `block in go' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:62:in `loop' 
    from /Users/kw/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/zeus-0.13.3/lib/zeus.rb:62:in `go' 

Answer 1

... 我有什么是符号数组

不，不是。这个TYPE = %w(:groups :projects)是两个字符串':groups'和':projects'的数组，而不是符号数组。

试试这个：

TYPE = %w(groups projects) 
RelatedList.type(*TYPE) 

或者，如果你是幸运的，关于Ruby 2.0.0运行你的应用程序，使用符号数组文本：

TYPE = %i(groups projects) 
#=> [:groups, :projects]