if 语句在视图中显示 html.actionlink
我有一个显示评论列表的视图。现在，评论可以有一个与其关联的文档，因此当我显示每个评论时，我需要检查“AttachedDocumentID”是否有值，如果有，则显示一个 HTML.ActionLink 。
不确定最好的方法来避免在视图中出现 if 语句（我认为这是不好的形式），并且我真的不想在帮助器中生成任何 html 代码。
我还有什么其他选择？
I have a view that displays a list of comments. Now a comment can have a document associated to it so as I am displaying each comment I need to check whether or not "AttachedDocumentID" has a value and if so display a HTML.ActionLink to it.
Not sure on the best way to do this to avoid having an if statement in the view (which I'm led to believe is bad form) and I didn't really want to have any html code generated in the helper.
What other options do I have?
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就我个人而言，我会在视图中将其作为 if 语句来执行，因为很清楚您的意图，但是如果您愿意，您可以添加一个扩展方法：
然后像平常一样在视图中调用它
Personally I'd do it as an if statement in the view as it's clear what you're intending, but you could add an extension method if you wanted:
Then call it in your view like normal
戴夫是对的 - 视图中的 if 语句没有任何问题。循环也可以。要避免的事情是让视图执行任何类型的查询、计算或模型修改。
dave is right - there's nothing wrong with if statements in a view. loops are also ok. the things to avoid are having the view do any kind of queries or calculations or model modifications.
如果您有一个单独的视图模型 (ViewModel)，请将此类逻辑移至那里。这样，属于视图的逻辑就保留在一个地方。我更喜欢仅将 HtmlHelpers 用于跨视图的通用可重用案例。
If you have a separate model for view (ViewModel), move this kind of logic there. That way logic belongs to the view stays in one place. I prefer using HtmlHelpers only for generic reusuable cases across views.