I would like to have a dynamic content so I tried something like below. When I log $children[0], I get a proper data but nothing is shown on the HTML. Is there way to render $children?
Main:
<template>
<foo>
<h1>Content should be rendered {{number}} time.</h1>
</foo>
</template>
<script>
components: { Foo },
data() {
return {
number: 1
}
}
...
</script>
Foo:
<template>
<div v-html="$children[0]"></div>
</template>
You need to use Slot. Simply replace <div v-html="$children[0]"></div> with <slot></slot>.
Related
Please see this minimum example, I have a simple component called HelloWorld.vue
HelloWorld.vue
<template>
<div class="foo">bar</div>
</template>
When I using this component like this
App.vue
<template>
<HelloWorld />
</template>
<script>
import HelloWorld from "./HelloWorld.vue";
export default {
components: {
HelloWorld,
},
};
</script>
This rendered HTML looks like this
Rendered HTML
<div class="foo">bar</div>
However, when I add :is prop, rendered HTML changed
App.vue
<template>
<HelloWorld is="h2" />
</template>
<script>
import HelloWorld from "./HelloWorld.vue";
export default {
components: {
HelloWorld,
},
};
</script>
Rendered HTML
<h2></h2>
Why is this happening?
Is it possible to overwrite only the outer HTML tag just like the class and style prop?
is should be used together with the component element:
<component is="h2"></component>
<HelloWorld is="h2" /> efficiently renders h2 instead of HelloWorld.
In order for root element to be configurable, the component should provide this:
<template>
<component :is="tag" class="foo">bar</div>
</template>
<script>
export default {
props: {
tag: {
type: String,
default: 'div'
}
}
}
</script>
I am trying to send a series of objects that are in an array to a child component using v-for, but when I try to access them from the child component, it tells me that the props are not defined.
Im using Quasar Framework actually
This is how I pass the data:
<div class="row justify-center">
<foo
v-for="brand in brands"
:key="brand.id"
:brand="brand"
></foo>
</div>
<script>
import foo from "src/components/foo.vue";
export default {
components: {
foo
},
data() {
return {
brands: []
};
},
methods: {
async getData() {
let x = await get.getData();
this.brands = x.data;
console.log(this.brands);
}
},
mounted() {
this.getData();
}
};
</script>
brands is an array that obtains two objects from a request made to a local database, which I have already verified that it receives the data correctly
And this is the component file and how I try to get the properties:
<q-card class="my-card" flat bordered>
<q-img
:src="require(`../assets/${brand.img}`)"
:alt="brand.img + ' Logo'"
/>
<div class="text-h5 q-mt-sm q-mb-xs">{{ brand.name }}</div>
<div class="text-caption text-grey">
<p>
{{ brand.price }}
</p>
</div>
<script>
export default {
name: "foo",
props: ["brand"],
data() {
return {
expanded: false
};
},
};
</script>
but when I try to execute the code it gives me the following error:
Error in render: "Error: Cannot find module './undefined'
I know one way to make it work, and it is by creating a property for each of the object's values, for example:
<component
v-for="brand in brands"
:key="brand.id"
:name="brand.name"
:price="brand.price"
></component>
But I dont think thats the correct way to do this....
try to change
import component from "src/components/component.vue";
to
import foo from "src/components/component.vue";
on your components section you just call foo instead of foo:component
I am not sure, but:
Looks like ${brand} is empty. Your function GetData() is async, so the <foo> is created before the GetData() has its data set/returned.
You can change
<foo v-for="brand in brands" :key="brand.id" :brand="brand"></foo>
To
<foo v-if="brands.length> 0" v-for="brand in brands" :key="brand.id" :brand="brand"></foo>
To make sure that the element is renderd after the data if set.
Note: v-if is when the html is rendered, v-show is just a css display hide, but the html is always renderd
Working my way learning about Vue. I chose it as the better alternative after looking at React, Angular and Svelte.
I have a simple example that its not working probably because I'm not getting/understanding the reactive behaviour of Vue.
Plain simple App:
<template>
<div id="app">
<app-header></app-header>
<router-view />
<app-footer></app-footer>
</div>
</template>
<script>
import Header from './components/Header.vue'
import Home from './components/Home.vue'
import Footer from './components/Footer.vue'
export default {
components: {
name: 'App',
'app-header': Header,
'app-footer': Footer
}
}
</script>
Where Home.vue and Footer.vue have plain HTML content on the template.
On Header.vue I have:
<template>
<div>
<h1>The Header</h1>
<nav>
<ul>
<li>Curr Player: {{ ethaccount }}</li>
<li>Prop owner: {{ propOwner }}</li>
</ul>
</nav>
<hr />
</div>
</template>
<script>
export default {
data() {
return {
ethaccount: 'N/A',
propOwner: 'N/A'
}
},
methods: {
update() {
var ethaccount = '0xAAAAAA123456789123456789123456789'
console.log('ETH Account: ' + ethaccount)
var propOwner = '0xPPPPPPPPPPP987654321987654321'
console.log('Prop Account: ' + propOwner)
}
},
mounted() {
this.update()
}
}
</script>
But I'm unable to get the header updated and unable to find what I'm doing wrong. Help.
If you need to read a little bit more about the reactivity of the datas in vuejs check this link : https://v2.vuejs.org/v2/guide/reactivity.html
If you need to access/change your data try to do it like that :
this.$data.ethaccount = 'foo';
this.$data.propOwner = 'bar';
For me the problem is taht you re-declare your variable locally by doing :
var ethaccount = "0xAA...";
By doing such you never change the value of the data you're accessing through your template.
Hope it will solve your problem.
I'm having problems with a named slot. This seems like it should work. In the code below I'm trying to use a named slot "sidebar". I would expect my sidebar slot content to show up between the Sidebar starts and Sidebar ends text but nothing shows up in that slot. Everything renders in the main slot.
Here's my code.
route...
{
path: "/test",
name: "test",
meta: {
layout: "test-layout"
},
component: () =>
import("#/pages/Test.vue")
},
and App.vue template...
<template>
<div id="app">
<component :is="layout">
<router-view />
</component>
</div>
</template>
and test-layout...
<template>
<div>
<div>
<h1>Sidebar starts</h1>
<slot name="sidebar"/>
<h1>Sidebar ends</h1>
</div>
<div class="container">
<h1>Content starts</h1>
<slot/>
<h1>Content ends</h1>
</div>
</div>
</template>
and page Test.vue...
<template>
<test-layout>
<span slot="sidebar">sidebar slot content {{forecast.todaySummary}}</span>
<div>main slot content {{forecast.currentSummary}}</div>
</test-layout>
</template>
<script>
import api from "#/js/web-services";
export default {
data() {
return {
forecast: null
};
},
created() {
api.getDailyForecast().then(response => {
this.forecast = response.data;
});
}
};
</script>
and the import in my main.js
import TestLayout from "./layouts/test-layout.vue";
Vue.component('test-layout', TestLayout);
Why isn't my sidebar slot working?
UPDATE
If I get rid of the two lines in main.js and add
import TestLayout from "#/layouts/test-layout.vue";
and
export default {
components: { TestLayout },
data() {...
to Test.vue then it works.
In your router file you are using layout: "test-layout" this means what ever comes in your vue component will be rendered in base test-layout.
There are two ways as far as I know to render the layouts.
Do not define layout in router file and on parent component define named slots like this<slot #header></slot><slot #body></slot> then every slot will be rendered within this (test-layout) layout, and then in your each component extend like this <test-layout><template header>Header content</template><template body>Body content</template></test-layout>.
Defining layout in router file like you did, you can not further use in slots in that layout, you can just import other components e.g <template><Component1><Component2> </template>
I have a component that takes a main <slot> from a form that is generated elsewhere in my application. I'm trying to use v-model on the form inputs but my vue component just spits out a warning about the properties not being defined, when in fact they are.
I admit it's a weird way of doing things, but it seems to be the easiest way for me to do this since my form is being generated by Symfony.
html:
<my-component>
<input ref="start" v-model="start"/>
</my-component>
my component:
<script>
export default {
data() {
start: null
},
mounted() {
console.log(this.$refs) // === {}; expected {"start":{...}}
}
}
</script>
<template>
<div>
<slot/>
... other stuff here
</div>
</template>
console log:
Property or method "start" is not defined on the instance but referenced during render
I cannot use $refs or v-model in the html. Am I doing something wrong? Or is this just not possible.
If you declare v-model="start" in the parent then it belongs to the parent and needs to be declared there. It looks like instead you declare it in the component instead as null.
If you reorder things it should work as you expect:
Parent:
<parent>
<input v-model="start" :start="start"/>
</parent>
<script>
export default {
data() {
start: null // Important to define start here if it's used in this component's html
}
}
</script>
Component:
<template>
<div>
<slot/>
... other stuff here
</div>
</template>
<script>
export default {
props: ['start'], // Receive the prop from the parent
data() {
},
mounted () {
console.log(this.start) // Should echo the value of the prop from the parent
}
}
</script>