为什么Meteor模板助手不在上下文中返回变量？

Question

For some reason, this doesn't work at all.

{{user_slugged username}}

The {{username}} is a variable available to the template. However, it gives me a null / undefined value in the helper.

Here is my helper code

UI.registerHelper('user_slugged', function(username) {

... other stuff... return things.


}

The issue I am having is when I try something like this {{user_slugged 'Hello'}} it does everything right and returns what is expected.

However, when I try {{user_slugged username}} it doesn't seem to work even though I can easily display {{username}} in that same line of code.

Which seems really odd, now I'm thinking the way to send parameters to handlebars helpers might have changed in Meteor 0.8.0 . If so, it'd be great if someone could point me into the right direction or give me an answer to this question.

EDIT: To clarify I am able to use {{username}} in the same line as {{user_slugged username}} so something like this works

<a href="{{user_slugged username}}">{{username}}</a>

username is an object property that is available in the template and at the point where I am trying to send it in as a param to the helper.

Answer 1

I am not sure why this is happening (maybe there is a global helper username ?), but you should be able to fix it easily by writing

{{user_slugged ./username}}

instead of

{{user_slugged username}}

The dot always means the current data context, so there is no way that the rendering engine will get confused about it.