我的HAML模板的帮助器出了什么问题？
- def display_event(event)
- event = MultiJson.decode(event)
- markup_class = get_markup_class(event)
- haml_tag :li,:class => markup_class do
- haml_tag :b,"Foo"
- haml_tag :i,"Bar"
- end
- end
这是错误：
- haml_tag outputs directly to the Haml template.
- Disregard its return value and use the - operator,or use capture_haml to get the value as a String.
模板调用display_event,如下所示：
- - @events.each do |event|
- = display_event(event)
- %li.fooclass
- %b Foo
- %i Bar
解决方法
错误消息中的线索：
- Disregard its return value and use the - operator,or use capture_haml to get the value as a String.
来自haml_tag的文档：
haml_tagoutputs directly to the buffer; its return value should not be used. If you need to get the results as a string,use#capture_haml.
要修复它,要么将Haml更改为：
- - @events.each do |event|
- - display_event(event)
(即使用 – 运算符而不是=),或更改方法以使用capture_haml：
- def display_event()
- event = MultiJson.decode(event)
- markup_class = get_markup_class(event)
- capture_haml do
- haml_tag :li,"Bar"
- end
- end
- end