javascript - 将参数传递给 handlebars helper

Question

所以我有一个非常简单的 Handlebars 助手 -

Handlebars.registerHelper('selectRow', (rowIndex, selectedIds) ->
  console.log 'row index'
  console.log rowIndex
  console.log selectedIds
  isSelected = _.indexOf(rowIndex, selectedIds)
  if isSelected > -1 
    return 'class="row-selected"'
)

我有这个 Handlebars 代码 -

<div class="title">{{ title }}</div>
<hr/>
<table cellspacing="0" cellpadding="0">
  <thead>
    {{#each columns}}
    <th class="col-heading" data-heading="{{ this }}">{{ this }}</th>
    {{/each}}
  </thead>
  <tbody>
    {{#each rows}}
        <tr {{#selectRow @index selected }}>
          {{#each this}}
          <td>
            {{this}}
          </td>
          {{/each}}
        </tr>
      {{/selectRow}}
    {{/each}}

  </tbody>
</table>

所选参数始终未定义。如果我在其他任何地方添加 {{ selected }}，它会显示一个数组，正如您从下面看到的那样，它应该 -

data = @model.data()
selected = @model.get('selection').get('selected')
@$el.html(@tableContentsTemplate({
  columns: @model.get('columns')
  rows: data
  title : @model.get('title')
  selected: JSON.stringify(selected)
}))

如何将选定的参数正确传递给我的助手？

Answer 1

您在 Handlebars each 循环中使用了 selected 变量，所以我想 selected 不在范围内。