Transferring a dynamic property from the $root instance to a child component through vue-router

Question

Transferring a dynamic property from the $root instance to a child component through vue-router

How can VueJS pass a prop to a child component from the $root view instance while using vue-router?

$root instance:

const router = new VueRouter({
    routes: [{
        path: "/dashboard",
        component: () => import("./User/Dashboard.vue" /* webpackChunkName: "js/components/user/Dashboard" */ )
    }]
});

var app = new Vue({
    el: '#app',
    router,
    data: () => ({
        passedProp
    }), 
});

Laravel Layout using :

@section('content')
    <transition name="slide">
        <router-view></router-view>
    </transition>
@endsection

Child Component served by vue-router:

<script>
export default {
    props: [
        'clearFormProp'
    ]
}
</script>

In the vue-router documentation, there is a way to pass a prop via the url, however, this method makes the prop stateless and does not retain reactivity. It only updates the prop on page refresh.

Passing a static prop presents the same issue.

Is there a way to pass a prop to the child component while still maintaining reactivity for the prop?

javascript vue.js vuejs2 vue-component vue-router

Answer 1

Answer №1

Send properties to <router-view/> and retrieve them in the child components

<router-view :dataProp="localData"></router-view>

and in the designated component:

<template>
  <h1>
    {{ dataProp }}
  </h1>
</template>
<script>
 export default{
   props:{
     dataProp: Object
   }
 }
</script>

Answer 2

Send properties to <router-view/> and retrieve them in the child components

<router-view :dataProp="localData"></router-view>

and in the designated component:

<template>
  <h1>
    {{ dataProp }}
  </h1>
</template>
<script>
 export default{
   props:{
     dataProp: Object
   }
 }
</script>

Answer 3

Answer №2

This solution employs the State Pattern to tackle the issue at hand.

Imagine a basic counter application, featuring a text that showcases the current value and a button that increases it each time the user clicks on it.

The state is extracted into a constant:

const counter = {
    value: 0
}

export { counter };

You can then import it in the child component and modify it directly using Vue:

<template>
    <div>
        Counter value from child:
        {{ counter.value }}
    </div>
    <div>
        <button type="button" @click="() => counter.value++">Increment from child</button>
    </div>
</template>

<script>
import { counter }  from "/src/counter.js";

export default {
    data: () => ({ counter })
}
</script>

In the root component, you can perform the same actions:

<template>
    <div>
        Counter value from root:
        {{ counter.value }}
    </div>
    <div>
        <button type="button" @click="() => counter.value++">Increment from root</button>
    </div>

    <ChildComponent />
</template>


<script>
import ChildComponent from './components/ChildComponent.vue'
import { counter }  from "/src/counter.js";

export default {
  name: 'App',
  data: () => ({ counter }),
  components: {
    ChildComponent
  }
}
</script>

Refer to the image below to witness how the example functions:

https://i.sstatic.net/FOGRg.gif

Note: This approach only works because the two components are mutating the same object and triggering events to refresh themselves. If you increment the counter value outside a component, you will not observe the refresh, which can be addressed with Vuex.

Moreover, if your application frequently deals with controlling data across various components, I also recommend utilizing Vuex.

Vuex is a state management pattern + library for Vue.js applications. It acts as a centralized store for all components in an application, ensuring that the state can only be modified predictably.

Answer 4

This solution employs the State Pattern to tackle the issue at hand.

Imagine a basic counter application, featuring a text that showcases the current value and a button that increases it each time the user clicks on it.

The state is extracted into a constant:

const counter = {
    value: 0
}

export { counter };

You can then import it in the child component and modify it directly using Vue:

<template>
    <div>
        Counter value from child:
        {{ counter.value }}
    </div>
    <div>
        <button type="button" @click="() => counter.value++">Increment from child</button>
    </div>
</template>

<script>
import { counter }  from "/src/counter.js";

export default {
    data: () => ({ counter })
}
</script>

In the root component, you can perform the same actions:

<template>
    <div>
        Counter value from root:
        {{ counter.value }}
    </div>
    <div>
        <button type="button" @click="() => counter.value++">Increment from root</button>
    </div>

    <ChildComponent />
</template>


<script>
import ChildComponent from './components/ChildComponent.vue'
import { counter }  from "/src/counter.js";

export default {
  name: 'App',
  data: () => ({ counter }),
  components: {
    ChildComponent
  }
}
</script>

Refer to the image below to witness how the example functions:

https://i.sstatic.net/FOGRg.gif

Note: This approach only works because the two components are mutating the same object and triggering events to refresh themselves. If you increment the counter value outside a component, you will not observe the refresh, which can be addressed with Vuex.

Moreover, if your application frequently deals with controlling data across various components, I also recommend utilizing Vuex.

Vuex is a state management pattern + library for Vue.js applications. It acts as a centralized store for all components in an application, ensuring that the state can only be modified predictably.

Transferring a dynamic property from the $root instance to a child component through vue-router

Answer №1

Answer №2

https://i.sstatic.net/FOGRg.gif

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