我想像这样为 Volt 模型设置类型限制
class EventItemBlock < Volt::Model
:name, String
:items, Volt::ArrayModel
end
当我保存文件时，Volt 会在幕后引发错误，但不会崩溃。相关行是前七 (7) 行，表示逗号是语法错误。
在 Volt Framework 文档中，逗号被记录为正确的语法 ( http://docs.voltframework.com/en/docs/models.html )。删除逗号并不能解决错误——只有删除类型限制才能解决。
[ERROR] #<SyntaxError: /home/jg/ModelTest/app/main/models/event_item_block.rb:2: syntax error, unexpected ',', expecting keyword_end
:name, String
^
/home/jg/ModelTest/app/main/models/event_item_block.rb:3: syntax error, unexpected ',', expecting keyword_end
:items, Volt::ArrayModel
^>
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:67:in `require'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:67:in `block (2 levels) in require_in_components'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:65:in `each'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:65:in `block in require_in_components'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:31:in `block in app_folders'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:30:in `each'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:30:in `app_folders'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/rack/component_paths.rb:61:in `require_in_components'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/volt/server_setup/app.rb:16:in `setup_paths'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/volt/app.rb:74:in `initialize'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/boot.rb:21:in `new'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/boot.rb:21:in `boot'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server.rb:44:in `boot_volt'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/forking_server.rb:73:in `start_child'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/forking_server.rb:229:in `block in reload'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/utils/read_write_lock.rb:65:in `with_write_lock'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/forking_server.rb:227:in `reload'
/home/jg/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/volt-0.9.4/lib/volt/server/forking_server.rb:239:in `block (2 levels) in start_change_listener'