What is the process for establishing a property within a component?

I have structured my form to display three steps sequentially by creating separate components for each step of the process.

Here is a snippet from my app.js file:

import LocationList from './components/LocationList.vue';
import ChooseTime from './components/ChooseTime.vue';
import ChooseMethod from './components/ChooseMethod.vue';

Vue.component('location-list', LocationList);
Vue.component('choose-time', ChooseTime);
Vue.component('choose-method', ChooseMethod);

let store = {
    isVisible: {
        steps: {
            one: true,
            two: false,
            three: false,
        }
    }
};

new Vue({
    el: '#app-order',

    data: store,

    router
});

When I use the only route in my application,

import VueRouter from 'vue-router';

let routes = [
    {
        path: '/order',
        component: require('./views/Order.vue')
    }
];

export default new VueRouter({
    routes
});

All components are loading correctly. However, when trying to show them one at a time using v-show:

Order.vue:

<template>

    // ...

    <location-list v-show="isVisible.steps.one"></location-list>
    <choose-time v-show="isVisible.steps.two"></choose-time>
    <choose-method v-show="isVisible.steps.three"></choose-method>

    // ...

</template>

<script>
</script>

<style>
</style>

The error message indicates:

[Vue warn]: Property or method "isVisible" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option.

Even though isVisible is defined in the root element according to Vue's browser extension, it is not recognized within the Order view.

Any assistance would be appreciated!

Answer №1

When working with Vue, it's important to understand that child components do not have direct access to data from their parents. This means you'll need to pass any necessary data down to the child components.

A suggestion would be to define the isVisible property in the Order.vue component itself. However, if you prefer to keep it where it is currently defined, you'll still need to pass it into the component.

An easy way to achieve this is by defining isVisible as a property of the Order.vue component and then passing it through your router-view.

<router-view :is-visible="isVisible"></router-view>

There are various methods for passing props to routes, which are outlined in the Vue Router documentation.

The reason for suggesting to define isVisible in Order.vue is because if you ever need to change the values of your steps, you would need to do so at the root level where it is currently defined.

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