是否可以通过条件或其他JavaScript作为参数在ember handlebars？ [英] Is it possible to pass conditionals or other javascript as arguments in ember handlebars?

问题描述

我想传递一个真/假的声明到我的把手

I would like to pass a true/false statement to my handlebars

{{Gd-text-input label="Specify" name="Specify" key="entry.810220554" hideIf="entry.18110 === "Client""}}

如果变量entry.18110设置为Client

I would like hideIf to be true if the variable entry.18110 is set to "Client

推荐答案

，我希望hideIf为true >另一个答案不适用于Ember Handlebars，对于您的情况，您可以执行此操作。

The other answer does not work for Ember Handlebars, for your case you could do something like this.

http://emberjs.jsbin.com/agewuxAT/3/edit

组件

Component

App.HideableCompComponent = Em.Component.extend({
  isHidden: function(){
    var prop = this.get('hideIfProperty');
    if(!prop) return false;
    // allow lazy comparison? up to you
    return this.get('content').get(prop) == this.get('hideIfValue');
  }.property('hideIfProperty', 'hideIfValue')
});

模板

<script type="text/x-handlebars" data-template-name="components/hideable-comp">
  {{#unless isHidden}}
    I am a component I am not hidden!
  {{else}}
    I am hidden
  {{/unless}}
</script>

使用

{{hideable-comp content=model hideIfProperty='length' hideIfValue=3}}

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