Ember：如何在组件内部使用链接到

Question

I have a component that contains a link-to. The component is more complicated, but for simplicity here:

//Component.hbs
{{#link-to link model}}{{yield}}{{/link-to}}

The problem is sometimes I will pass a model, sometimes I will not.

//Route.hbs
//providing the model
{{my-component link='chosenroute' model='chosenmodel'}}

//omitting a model - doesn't work
{{my-component link='otherroute'}}

How do I make the model argument optional?

Answer 1

Just put an if/else. undefined is not a good parameter for link-to.

//Component.hbs

{{#if model}}
    {{#link-to link model}}{{yield}}{{/link-to}}
{{else}}
    {{#link-to link}}{{yield}}{{/link-to}}
{{/if}}