Question

为什么在每个ember循环中都无法访问控制器的属性？在我们的例子中， priorsAlphabetical 是控制器的属性。

each conditionsAlphabetical itemController="booleanRadio"
        .col-xs-6.col-lg-5.option-value: .option-value-content
          partial "boolean-radio"
          if value
            a.add-note-link click="addConditionPrior this target='view'"
              span.icon-newspaper-alt.newspaper-color
          if-existing-prior param1=name param2=priorsAlphabetical
        a.add-note-link click="addConditionPrior this target='view'"
          span.icon-newspaper-alt

此处 priorsAlphabetical 在每个循环中为空。但是 priorsAlphabetical 可以在每个循环之外访问。

Answer 1

each助手正在将当前范围从控制器更改为当前循环的对象，因此在块内部尝试从每个条件对象中检索priorsAlphabetical。

#this context is the controller
each conditionsAlphabetical
  =name #this context is each condition

这是each助手的一个有点令人困惑的功能，因此将不推荐使用Ember 2.0

要解决您的问题，请使用each condition in conditionsAlphabetical帮助程序，它将控制器保留为当前作用域。

#this context is the controller
each condition in conditionsAlphabetical
  =name #this context is still the controller

所以在你的特定情况下：

each condition in conditionsAlphabetical itemController="booleanRadio"
        .col-xs-6.col-lg-5.option-value: .option-value-content
          partial "boolean-radio"
          if condition.value
            a.add-note-link click="addConditionPrior condition target='view'"
              span.icon-newspaper-alt.newspaper-color
          if-existing-prior param1=condition.name param2=priorsAlphabetical
        a.add-note-link click="addConditionPrior condition target='view'"
          span.icon-newspaper-alt

变量无法在每个ember内部访问

1 个答案: