流星助手必须是功能吗?我认为它们可以被直接分配给任何空格键可以理解的东西(数组,字符串,数字等)。但这并没有正常工作:
Template.myTemplate.helpers = ({
'tabButtons': [{
title: "Active Topics",
link: "/dashboard/topic-builder/active",
bootstrap: "col-xs-6",
active: isActive("activeTopics", Template.currentData())
}, {
title: "Draft Topics",
link: "/dashboard/topic-builder/drafts",
bootstrap: "col-xs-6",
active: isActive("draftTopics", Template.currentData())
}]
}
通过"不能正常工作",我的意思是" tabButtons"在myTemplate
中未定义。但是,这样可以正常工作:
Template.myTemplate.helpers = ({
'tabButtons': function(){
return [{
title: "Active Topics",
link: "/dashboard/topic-builder/active",
bootstrap: "col-xs-6",
active: isActive("activeTopics", Template.currentData())
}, {
title: "Draft Topics",
link: "/dashboard/topic-builder/drafts",
bootstrap: "col-xs-6",
active: isActive("draftTopics", Template.currentData())
}];
}
奇怪的是,同样的语法在我的代码中的其他地方工作。例如,这个:
Template.myTemplate2.helpers({
'sectionButtons': [{
title: "Matrix",
icon: "fa-table",
link: "/dashboard/overview",
bootstrap: "col-xs-2"
}, {
title: "Topic Builder",
icon: "fa-database",
link: "/dashboard/topic-builder",
bootstrap: "col-xs-2"
}, {
title: "Alerts",
icon: "fa-exclamation-circle",
link: "/dashboard/alerts",
bootstrap: "col-xs-2"
}, {
title: "Story",
icon: "fa-book",
link: "/dashboard/story-of-the-day",
bootstrap: "col-xs-2"
}, {
title: "Add Admin",
icon: "fa-plus",
link: "/dashboard/addadmin",
bootstrap: "col-xs-2"
}, {
title: "Settings",
icon: "fa-cog",
link: "/dashboard/settings",
bootstrap: "col-xs-2"
}]
});
myTemplate2
中未定义。我已经检查了具有相同名称的全局帮助程序,并且使用相同的名称将事物传递给每个上下文,只是为了确保其他内容不会返回undefined并覆盖我的函数,但这绝对不是导致问题的是什么。
这到底是怎么回事?
答案 0 :(得分:0)
我明白了。问题出在Template.currentData()
,而不是我使用的是函数。例如,这个:
'tabButtons': [{
title: "Active Topics",
link: "/dashboard/topic-builder/active",
bootstrap: "col-xs-6",
active: isActive("activeTopics", "activeTopics")
}, {
title: "Draft Topics",
link: "/dashboard/topic-builder/drafts",
bootstrap: "col-xs-6",
active: isActive("draftTopics", "draftTopics")
}]
工作正常。
当我直接分配数组时,我认为Template.currentData()
会起作用,因为它是在帮助器中定义的。但似乎使用template.data
和Template.currentData()
只能在函数中定义直接传递给帮助器时才能工作。这是有道理的,现在我考虑一下,因为没有办法修改定义tabButtons
的上下文,因为我包含Template.currentData()
的行在它传递给它之前就已经被执行了Template.topicBuilder.helpers
。