In Vue.js I can define named slots for my components, besides my default slot:
<article>
<header>
<slot name="header">
<h2>Default heading</h2>
</slot>
</header>
<slot/>
</article>
and then use it like this:
<template>
<FooArticle v-for="item in items">
<template #heading>
<h3>{{item}} Heading</h3>
</template>
<p>Just content</p>
</FooArticle>
</template>
<script>
export default {
name: 'App',
components: {
FooArticle
},
data() {
return {
items: ['First', 'Second']
}
}
}
</script>
Is this possible with Neos Fusion, to create a mechanism like this?
Yes this is possible, as you can use the @path decorator to overwrite a property of the wrapper element.
First you define your props and then output them in the renderer.
prototype(Foo.Components:Article) < prototype(Neos.Fusion:Component) {
heading = afx`<h2>Default heading</h2>`
content = ''
renderer = afx`
<article>
<header>
{props.heading}
</header>
{props.content}
</article>
`
}
Then you want to override these "slots" (props) from the outside with the @path decorator. The whole element the decorator is defined on will override the specified prop "heading" of the wrapping element.
prototype(Foo.Site:Home) < prototype(Neos.Fusion:Component) {
items = ${['First', 'Second']}
renderer = afx`
<Neos.Fusion:Loop items={props.items}>
<Foo.Components:Article>
<Neos.Fusion:Fragment @path="heading">
<h3>{item} heading</h3>
</Neos.Fusion:Fragment>
<p>just some content</p>
</Foo.Components:Article>
</Neos.Fusion:Loop>
`
}
FYI, we use a Neos.Fusion:Fragment object to define the path decorator, so the fragment does not render any additional markup like an enclosing <div>. In this simple case, where we only want to render a single element into the slot, we could have omitted the fragment and just set the @path="heading" directly to the <h3>.