sending properties to dynamically loaded components

Question

sending properties to dynamically loaded components

I'm struggling with transferring props between children and parent components using Vue Routes. Within my Layout component, I have a wrapper DIV structured like this:

<template>
    <div class="container" v-bind:class="cssClass">
      <router-view></router-view>
    </div>
</template>

<script>
export default {
  name: 'Layout',
  props: ['cssClass']
}
</script>

In my base App JS file, I have defined my routes as shown below. Initially, the view loads with the class "container-animated" and everything works perfectly.

const router = new VueRouter({
    routes: [
      { path: '/', component: Layout, props: { cssClass: 'container-animated' },
        children: [
          { path: '', component: Homepage },
          { path: '/hello-world', component: HelloWorldPage, props: { cssClass: '' } }
        ]
     },
    ]
});

However, when navigating to the /hello-world route, I want to pass an empty cssClass prop down to Layout (where HelloWorldPage is nested). How can I achieve this? Is using props the right approach?

javascript vue.js vuejs2 vue-router

Answer 1

Answer №1

After some experimentation, I have managed to come up with a solution for my current issue.

I discovered that child props are not automatically received by the parent component when passed through the Vue Router. To work around this, I implemented a custom event handling mechanism where each dynamically injected component emits a 'childinit' event back to the parent Layout component. The emitted value is stored in a local variable within the parent, which is then used to bind the appropriate class to the element.

const router = new VueRouter({
    routes: [
      {
        path: '/',
        component: Layout,
        children: [
          {
            path: '',
            component: Homepage,
            props: { cssClass: 'home' },
          },
          {
              path: '/helloworld',
              component: HelloWorldPage,
              props: { cssClass: 'helloworld' }
          }
        ]
      }
    ]
});

The Layout component implementation:

<template>
    <div class="container" v-bind:class="className">
      <router-view v-on:childinit="onChildInit"></router-view>
    </div>
</template>

<script>
export default {
  name: 'Layout',
  props: ['cssClass'],
  data() {
    return {
      className : ''
    }
  },
  methods: {
    onChildInit( value ){
      this.className = value;
    }
  }
}
</script>

The Homepage component logic:

export default {
  name: 'Homepage',
  props: ['cssClass'],
  created() {
    this.$emit('childinit', this.cssClass);
  }
}

In a similar fashion, the HelloWorld component also emits the 'childinit' event. It might be worth exploring creating a base component that handles this initialization event to avoid repetition in both components.

Answer 2

After some experimentation, I have managed to come up with a solution for my current issue.

I discovered that child props are not automatically received by the parent component when passed through the Vue Router. To work around this, I implemented a custom event handling mechanism where each dynamically injected component emits a 'childinit' event back to the parent Layout component. The emitted value is stored in a local variable within the parent, which is then used to bind the appropriate class to the element.

const router = new VueRouter({
    routes: [
      {
        path: '/',
        component: Layout,
        children: [
          {
            path: '',
            component: Homepage,
            props: { cssClass: 'home' },
          },
          {
              path: '/helloworld',
              component: HelloWorldPage,
              props: { cssClass: 'helloworld' }
          }
        ]
      }
    ]
});

The Layout component implementation:

<template>
    <div class="container" v-bind:class="className">
      <router-view v-on:childinit="onChildInit"></router-view>
    </div>
</template>

<script>
export default {
  name: 'Layout',
  props: ['cssClass'],
  data() {
    return {
      className : ''
    }
  },
  methods: {
    onChildInit( value ){
      this.className = value;
    }
  }
}
</script>

The Homepage component logic:

export default {
  name: 'Homepage',
  props: ['cssClass'],
  created() {
    this.$emit('childinit', this.cssClass);
  }
}

In a similar fashion, the HelloWorld component also emits the 'childinit' event. It might be worth exploring creating a base component that handles this initialization event to avoid repetition in both components.

Answer 3

Answer №2

Although this may be considered old, there is no need to stress about creating a method in the component that emits your value. Here's my approach:

Here is an example of your layout:

<template>
<div class="container" v-bind:class="className">
    <router-view></router-view>
</div>
</template>
<script>
export default {
  name: 'Layout',
  props: ['cssClass'],
  data() {
    return {
      className : ''
    }
  },
  // set class initially
  created () {
    this.setClassName(this.$route)
  },
  // and when route changes
  watch: {
    $route: function (val) {
        this.setClassName(val)
    }
  },
  methods: {
    setClassName( Route ){
      // each matched route is checked for cssClass from top to bottom, so you can override
      Route.matched.forEach((route) => {
        if (route.props.default && route.props.default instanceof Object && 'cssClass' in route.props.default) {
          this.className = route.props.default.cssClass
        }
      })
    }

  }
}
</script>

This method keeps everything within the Layout component. It may not be the perfect solution, but another option could be using router.afterEach() and setting the value to Vuex store.

Answer 4

Although this may be considered old, there is no need to stress about creating a method in the component that emits your value. Here's my approach:

Here is an example of your layout:

<template>
<div class="container" v-bind:class="className">
    <router-view></router-view>
</div>
</template>
<script>
export default {
  name: 'Layout',
  props: ['cssClass'],
  data() {
    return {
      className : ''
    }
  },
  // set class initially
  created () {
    this.setClassName(this.$route)
  },
  // and when route changes
  watch: {
    $route: function (val) {
        this.setClassName(val)
    }
  },
  methods: {
    setClassName( Route ){
      // each matched route is checked for cssClass from top to bottom, so you can override
      Route.matched.forEach((route) => {
        if (route.props.default && route.props.default instanceof Object && 'cssClass' in route.props.default) {
          this.className = route.props.default.cssClass
        }
      })
    }

  }
}
</script>

This method keeps everything within the Layout component. It may not be the perfect solution, but another option could be using router.afterEach() and setting the value to Vuex store.

Answer 5

Answer №3

If you're looking for an alternative approach, consider this method:

Routing with Vue:

const router = new VueRouter({
    routes: [
      {
        path: '/',
        component: Layout,
        children: [
          {
            path: '',
            component: Homepage,
            meta: { cssClass: 'home' },
          },
          {
            path: '/helloworld',
            component: HelloWorldPage,
            meta: { cssClass: 'helloworld' }
          }
        ]
      }
    ]
});

Creating a layout component:

<template>
    <div class="container" :class="className">
       <router-view ></router-view>
    </div>
</template>

<script>
export default {
  name: 'Layout',
  data() {
    return {
      className : ''
    }
  },
  created() {
    this.className = this.$route.meta.cssClass;
  }
}
</script>

For a setup with reactivity:

Using setup and router in the layout component:

<template>
    <div class="container" :class="cssClass">
       <router-view ></router-view>
    </div>
</template>

<script setup>
   import { useRoute } from 'vue-router'
   const route = useRoute();
   const { cssClass } = route.meta;
</script>

<script>
export default {
  name: 'Layout',
}
</script>

This updated method is designed for Vue 3 and offers a more efficient and streamlined solution.

Answer 6

If you're looking for an alternative approach, consider this method:

Routing with Vue:

const router = new VueRouter({
    routes: [
      {
        path: '/',
        component: Layout,
        children: [
          {
            path: '',
            component: Homepage,
            meta: { cssClass: 'home' },
          },
          {
            path: '/helloworld',
            component: HelloWorldPage,
            meta: { cssClass: 'helloworld' }
          }
        ]
      }
    ]
});

Creating a layout component:

<template>
    <div class="container" :class="className">
       <router-view ></router-view>
    </div>
</template>

<script>
export default {
  name: 'Layout',
  data() {
    return {
      className : ''
    }
  },
  created() {
    this.className = this.$route.meta.cssClass;
  }
}
</script>

For a setup with reactivity:

Using setup and router in the layout component:

<template>
    <div class="container" :class="cssClass">
       <router-view ></router-view>
    </div>
</template>

<script setup>
   import { useRoute } from 'vue-router'
   const route = useRoute();
   const { cssClass } = route.meta;
</script>

<script>
export default {
  name: 'Layout',
}
</script>

This updated method is designed for Vue 3 and offers a more efficient and streamlined solution.

Answer 7

Answer №4

Allow me to illustrate how vue functions:

You start with your main component, which is Layout.vue

<template>
  <div id="app" class="container-fluid">
    <router-view/>
  </div>
</template>

<style>
 .container-fluid {
background-color:blue; //specified in the parent, this class will be inherited by all elements within #app
}
</style>

Next, your vue router setup should resemble something like this:

{
    path: '/',
    name: 'Layout',
    component: Layout,
    children: [
        { path: '', component: Create, name: 'Create' },
    ]
}

By specifying that everything inside Layout.vue inherits from .container-fluid, the Create component will also inherit styles defined in its parent (Layout)

I trust this explanation clarifies things for you.

Best regards,

Answer 8

Allow me to illustrate how vue functions:

You start with your main component, which is Layout.vue

<template>
  <div id="app" class="container-fluid">
    <router-view/>
  </div>
</template>

<style>
 .container-fluid {
background-color:blue; //specified in the parent, this class will be inherited by all elements within #app
}
</style>

Next, your vue router setup should resemble something like this:

{
    path: '/',
    name: 'Layout',
    component: Layout,
    children: [
        { path: '', component: Create, name: 'Create' },
    ]
}

By specifying that everything inside Layout.vue inherits from .container-fluid, the Create component will also inherit styles defined in its parent (Layout)

I trust this explanation clarifies things for you.

Best regards,

sending properties to dynamically loaded components

Answer №1

Answer №2

Answer №3

Answer №4

Similar questions

My child template in Angular UI is not loading properly due to the presence of multiple views when the URL changes

Querying an array using the Contentful API

Navigating to two separate webpages concurrently in separate frames

Converting a single 10GB zip file into five separate 2GB files with the help of NodeJS

Can Javascript be used to obtain someone's UDID?

Using an Ajax Post request to trigger a JavaScript function

Getting the click event object data from a dynamically created button with jQuery or JavaScript

Latest News: The store is now received in the mutation, instead of the state

Challenges with passing array values between Vue3 components

Incorporating PHP generated content into Dart without using Ajax

JavaScript for Verifying Phone Numbers

Is the callback for a request always invoked?

TypeScript will show an error message if it attempts to return a value and instead throws an

When a function is transferred from a parent component to a child component's Input() property, losing context is a common issue

What are the steps for utilizing ckeditor to send textarea information via ajax?

Images cascading like a downpour on a canvas (Javascript)

Exploring the world of SPA: Implementing Data Transfer Objects

Learning how to handle URLEncoded format in Vue JS

Is it possible to define a 2-D array using the ref( ) function in VueJS?

Organize your blog content by utilizing post IDs as the designated id attribute