玉三元运算符添加元素

问题描述

想知道是否有办法编写三元或更短形式的 if 语句，在满足 if 时将 'a' 元素添加到表格单元格中.

Wondering if there is a way to write a ternary, or shorter form of if statement, which adds the 'a' element to the table cell when the if is satisfied.

我试过了，但没有用:

td= foo.x ? a(href="/#{foo.x}/foobar") View : '-'

以下确实有效，但冗长且凌乱..

The following does work, but is quite long winded and untidy..

tbody
each foo in bar
  tr
    td= foo.name
    if foo.x
      td
        a(href="/#{foo.x}/foobar") View
    else
      td -
    if foo.y
      td
        a(href="/#{foo.y}/hello") Hello
    else
      td -

谢谢

推荐答案

事实证明，有一个三元运算符.但是，为了缩短您的代码，您可以做的是声明块并在 if/else 部分中使用它们.虽然这在技术上向您的代码添加了几行，但我认为这可以帮助您解决长 if/else 语句的问题.

As it turns out, there is a ternary operator. However, to shorten your code, what you could do is declare blocks and use them in your if/else sections. While this technically adds lines to your code, I think this helps you with your problem of long if/else statements.

使用您的示例:

block x_view
  td
    a(href="/#{foo.x}/foobar") View

block dash
  td -

block y_hello
  td
    a(href="/#{foo.y}/hello") Hello

tbody
each foo in bar
  tr
    td= foo.name
    if foo.x
      block x_view
    else
      block dash
    if foo.y
      block y_hello
    else
      block dash

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