我想弄清楚为什么我无法从我的把手模板中嵌入的each
语句中访问我的模板变量(在我的keystone项目中呈现)。我在StackOverflow上已经阅读了很多类似问题的问题,但没有一个解决了我的特定用例。
我有一个简单的数据对象,它被传递给Handlebars模板,看起来大致如下:
{
rootPath: '../../../',
navigation: { all: { 'a': { sublinks: [Object] }
}
为什么rootPath
模板变量在{{#each navigation.all}}
中完美打印,但在{{#each sublinks}}
内无法访问?
这是我的Handlebars模板:
<!-- rootPath prints fine here -->
Here is your rootPath variable: {{rootPath}}
{{#each navigation.all}}
<!-- rootPath prints fine here -->
top-level rootPath: {{../rootPath}}
{{#if sublinks}}
{{#each sublinks}}
<!-- WHY WON'T ROOTPATH PRINT HERE?? -->
<!-- Obviously, I am trying the three possible scope paths -->
sub-level rootPath attempt 1: {{../../rootPath}}
sub-level rootPath attempt 2: {{../rootPath}}
sub-level rootPath attempt 3: {{rootPath}}
{{/each}}
{{/if}}
{{/each}}
我得到以下输出(请注意所有子级别尝试无法访问rootPath
模板变量):
Here is your rootPath variable: ../../../ top-level rootPath: ../../../ sub-level rootPath attempt 1: sub-level rootPath attempt 2: sub-level rootPath attempt 3:
我需要的是rootPath
随处可用,所以我可以得到这样的内容:
Here is your rootPath variable: ../../../ top-level rootPath: ../../../ sub-level rootPath: ../../../
那么我在这里缺少什么范围问题或语法?
我正在使用Handlebars版本2.0.0
,因为这是keystone预先打包的内容。
答案 0 :(得分:6)
我能够使用@root
令牌来解决问题。
只需在嵌入式@root.rootPath
中调用{{#each sublinks}}
即可解决我的问题。
以下是正确的模板标记:
Here is your rootPath variable: {{rootPath}}
{{#each navigation.all}}
top-level rootPath 1: {{../rootPath}} <!-- works -->
top-level rootPath 2: {{@root.rootPath}} <!-- works -->
{{#if sublinks}}
{{#each sublinks}}
sub-level rootPath 1: {{@root.rootPath}} <!-- works -->
sub-level rootPath 2: {{../../rootPath}} <!-- doesn't work -->
{{/each}}
{{/if}}
{{/each}}
产生以下输出:
Here is your rootPath variable: ../../../ top-level rootPath 1: ../../../ top-level rootPath 2: ../../../ sub-level rootPath 1: ../../../ sub-level rootPath 2:顶级rootPath的
注意:(在{{#each navigation.all}}
中,我可以使用其中任何一个:
{{../rootPath}} <!-- works -->
{{@root.rootPath}} <!-- works -->
但,在嵌入式{{#each sublinks}}
中,只有@root.rootPath
似乎有效:
{{@root.rootPath}} <!-- works -->
{{../../rootPath}} <!-- doesn't work -->