I'm having trouble getting data to display in my Vue components. I'm using Vueify and I'm trying to load an array of listings from the listings.vue
component and I keep getting errors. Also, I don't understand how to pull in the data via the computed
method. Any help would be appreciated.
This is the error I'm getting in the console:
[Vue warn]: The "data" option should be a function that returns a per-instance value in component definitions.
[Vue warn]: $mount() should be called only once.
Here is my app.vue
// app.vue
<style>
.red {
color: #f00;
}
</style>
<template>
<div class="container">
<div class="listings" v-component="listings" v-repeat="listing"></div>
</div>
</template>
<script>
module.exports = {
replace: true,
el: '#app',
components: {
'listings': require('./components/listings.vue')
}
}
</script>
Here is my listings.vue component
<style>
.red {
color: #f00;
}
</style>
<template>
<div class="listing">{{title}} <br> {{description}}</div>
</template>
<script>
module.exports = {
data: {
listing: [
{
title: 'Listing title number one',
description: 'Description 1'
},
{
title: 'Listing title number two',
description: 'Description 2'
}
]
},
// computed: {
// get: function () {
// var request = require('superagent');
// request
// .get('/post')
// .end(function (res) {
// // Return this to the data object above
// // return res.title + res.description (for each one)
// });
// }
// }
}
</script>
Using Props To Share Data From Parent To Child # VueJS props are the simplest way to share data between components. Props are custom attributes that we can give to a component. Then, in our template, we can give those attributes values and — BAM — we're passing data from a parent to a child component!
To specify the type of prop you want to use in Vue, you will use an object instead of an array. You'll use the name of the property as the key of each property, and the type as the value. If the type of the data passed does not match the prop type, Vue sends an alert (in development mode) in the console with a warning.
To create a component, following is the syntax. Vue. component('nameofthecomponent',{ // options}); Once a component is created, the name of the component becomes the custom element and the same can be used in the Vue instance element created, i.e. inside the div with ids component_test and component_test1.
data # A function that returns the initial reactive state for the component instance. The function is expected to return a plain JavaScript object, which will be made reactive by Vue.
The first warning means when you are defining a component, the data
option should look like this:
module.exports = {
data: function () {
return {
listing: [
{
title: 'Listing title number one',
description: 'Description 1'
},
{
title: 'Listing title number two',
description: 'Description 2'
}
]
}
}
}
Also, don't put ajax requests inside computed properties, since the computed getters gets evaluated every time you access that value.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With