Javascript Can'；t在onRendered函数中设置ReactiveDict变量

为什么这会给我一个

类型错误：无法读取未定义的属性“set”

Template.something.onCreated(function() {
    this.templateDictionary = new ReactiveDict();
});

Template.something.onRendered(function() {
    Template.templateDictionary.set( 'showExtraFields', true );
});

Template.something.helpers({
    anything: function() {
        var result = Template.instance().templateDictionary.get( 'showExtraFields' );
        console.log(result);
    }
});

---

您的

onRendered

函数需要修复：

Template.something.onRendered(function() {
    Template.instance().templateDictionary.set( 'showExtraFields', true );
});