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为什么由Heroku公司提供,但在发展中解释的四面 s子?
原标题:Why is square bracket syntax rendered by Heroku but interpreted in development?

铁路3.2 我用<代码><界定页标题;%标题“Titletext” %>。

编号为< entitled> tag:

<head>
    <title>AppName | <%= yield (:title) || "Default Title" %></title>
</head>

并作出如下规定:

<h1><%= yield(:title) %></h1>

采用以下助手方法:

def title(page_title, show_title = true)
    content_for(:title) { h(page_title.to_s) }
    @show_title = show_title
end

def show_title?
    @show_title
end

这在发展过程中发挥了预期作用,并在大多数情况下在Heroku生产。

在几个地方,我拥有更为复杂的头衔,例如<% 标题[“Edit” (@model.name)] %>

这一工程按预期发展,显示<代码>。 Edit Foo Bar。

但是,在Heroku, 则作为[“Edit”、“Foo Bar”

为什么在Heroku上 s子? 我感到,这可能与使用方括号来界定阵列有关,但在搜索Heroku docs和谷歌一号后,发现这方面的任何信息。

感谢任何帮助的想法。

最佳回答

当Heroku使用1.9(Array#to_s时,像你回家用1.8比罗一样,这在两者之间产生了不同的结果。 为了避免模棱两可,最好明确说明你想要印制阵列。 例如,如果你想要你的称职帮助人专门处理阵列,那么就应当做的是:

def title (page_title, show_title =true)
    page_title = page_title.join(   ) if page_title.respond_to? :join
    base_title = "AppName"
    @content_for_title = page_title.to_s
    @show_title - show_title
    if @content_for_title.nil?
      base_title
    else
      "#{base_title} | #{@content_for_title}"
    end
end
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