Sending information between components in VueJS

Question

Sending information between components in VueJS

I recently created something new for myself, but I encountered a problem. Let me explain further.

The component is named components/HomeComponent.vue

Here is the code:

HomeComponent.vue

<script>
export default {
  name: "HomeComponent",
  data() {
    posts: [
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" }
    ];
  }
};
</script>

and I have my "view" views/Home.vue

Home.vue

<template>
  <!-- Blog Entries Column -->
  <div class="col-md-8">
    <h1 class="my-4">Статии</h1>

    <!-- Blog Post -->
    <div class="card mb-4" v-for="post in posts">
      <div class="card-body">
        <h2 class="card-title">{{ post.title }}</h2>
        <p class="card-text">{{ post.body }}</p>
        <a href="#" class="btn btn-primary">Read More &rarr;</a>
      </div>
      <div class="card-footer text-muted">
        Posted on January 1, 2017 by
        <a href="#">xxx</a>
      </div>
    </div>
  </div>
</template>

I need to access the posts in my Home.vue file and create a loop. Can anyone provide guidance on how to do this? Thank you in advance! :)

<script>
// @ is an alias to /src
import HomeComponent from "@/components/HomeComponent.vue";

export default {
  name: "home",
  components: {
    HomeComponent
  },
};
</script>

javascript arrays vue.js vuejs2

Answer 1

Answer №1

To solve the issue, you'll need to pass your data down as props to the Home component. For more details, check out the documentation here. However, here's a quick solution for your problem.

Comp.vue

<template>
  <!-- Blog Entries Column -->
  <div class="col-md-8">
    <h1 class="my-4">Articles</h1>

    <!-- Blog Post -->
    <div class="card mb-4" v-for="post in posts">
      <div class="card-body">
        <h2 class="card-title">{{ post.title }}</h2>
        <p class="card-text">{{ post.body }}</p>
        <a href="#" class="btn btn-primary">Read More &rarr;</a>
      </div>
      <div class="card-footer text-muted">
        Posted on January 1, 2017 by
        <a href="#">xxx</a>
      </div>
    </div>
  </div>
</template>

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

HomePage.vue

<template>
  <comp :posts="posts"></comp>
</template>

<script>
import Comp from './components/Comp.vue'
export default {
  name: "HomeComponent",
  components: {
    'comp': Comp
  },
  data() {
    posts: [
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" }
    ];
  }
};
</script>

Answer 2

To solve the issue, you'll need to pass your data down as props to the Home component. For more details, check out the documentation here. However, here's a quick solution for your problem.

Comp.vue

<template>
  <!-- Blog Entries Column -->
  <div class="col-md-8">
    <h1 class="my-4">Articles</h1>

    <!-- Blog Post -->
    <div class="card mb-4" v-for="post in posts">
      <div class="card-body">
        <h2 class="card-title">{{ post.title }}</h2>
        <p class="card-text">{{ post.body }}</p>
        <a href="#" class="btn btn-primary">Read More &rarr;</a>
      </div>
      <div class="card-footer text-muted">
        Posted on January 1, 2017 by
        <a href="#">xxx</a>
      </div>
    </div>
  </div>
</template>

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

HomePage.vue

<template>
  <comp :posts="posts"></comp>
</template>

<script>
import Comp from './components/Comp.vue'
export default {
  name: "HomeComponent",
  components: {
    'comp': Comp
  },
  data() {
    posts: [
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" },
      { title: "Hello", body: "Some text" }
    ];
  }
};
</script>

Answer 3

Answer №2

Child components receive data through props, and you can use emit to send data back to the parent component.

data() {
  posts: [
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" }
  ];
},
mounted () {
  this.$emit('posts', this.posts);
}

To handle this in Home.vue, you need to listen for the event change like this:

<template>
  <div>
    <HomeComponent v-on:posts="getPosts($event)"></HomeComponent>
  </div>
</template>
<script>
  export default {
    data () {
      return {
        posts: []
      }
    },
    methods: {
      getPosts(e) {
        this.posts = e; 
      }
    }
  }
</script>

Answer 4

Child components receive data through props, and you can use emit to send data back to the parent component.

data() {
  posts: [
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" }
  ];
},
mounted () {
  this.$emit('posts', this.posts);
}

To handle this in Home.vue, you need to listen for the event change like this:

<template>
  <div>
    <HomeComponent v-on:posts="getPosts($event)"></HomeComponent>
  </div>
</template>
<script>
  export default {
    data () {
      return {
        posts: []
      }
    },
    methods: {
      getPosts(e) {
        this.posts = e; 
      }
    }
  }
</script>

Answer 5

Answer №3

HomeComponent.vue

<template>
  <div>
    <slot :posts="posts"></slot>
  </div>
</template>
<script>
 export default {
 name: "HomeComponent",
 data() {
  posts: [
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" }
 ];
}
};
</script>

Home.vue

<template>
    <div>
        <home-component slot-scope="{ posts }">
            <div class="card mb-4" v-for="post in posts">
               <div class="card-body">
                 <h2 class="card-title">{{ post.title }}</h2>
                 <p class="card-text">{{ post.body }}</p>
                 <a href="#" class="btn btn-primary">Read More &rarr;</a>
               </div>
               <div class="card-footer text-muted">
                 Posted on January 1, 2017 by
                 <a href="#">xxx</a>
               </div>
             </div> 
        </home-component>
    </div>
</template>
<script>
import HomeComponent from "@/components/HomeComponent.vue";
export default {
  name: "home",
  components: {
    HomeComponent
  },
};
</script>

https://medium.com/binarcode/understanding-scoped-slots-in-vue-js-db5315a42391 https://v2.vuejs.org/v2/guide/components-slots.html#Scoped-Slots

Answer 6

HomeComponent.vue

<template>
  <div>
    <slot :posts="posts"></slot>
  </div>
</template>
<script>
 export default {
 name: "HomeComponent",
 data() {
  posts: [
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" },
    { title: "Hello", body: "Some text" }
 ];
}
};
</script>

Home.vue

<template>
    <div>
        <home-component slot-scope="{ posts }">
            <div class="card mb-4" v-for="post in posts">
               <div class="card-body">
                 <h2 class="card-title">{{ post.title }}</h2>
                 <p class="card-text">{{ post.body }}</p>
                 <a href="#" class="btn btn-primary">Read More &rarr;</a>
               </div>
               <div class="card-footer text-muted">
                 Posted on January 1, 2017 by
                 <a href="#">xxx</a>
               </div>
             </div> 
        </home-component>
    </div>
</template>
<script>
import HomeComponent from "@/components/HomeComponent.vue";
export default {
  name: "home",
  components: {
    HomeComponent
  },
};
</script>

https://medium.com/binarcode/understanding-scoped-slots-in-vue-js-db5315a42391 https://v2.vuejs.org/v2/guide/components-slots.html#Scoped-Slots

Answer 7

Answer №4

Your component has its own data that is specific to it. To pass this data to other components or views, consider keeping it in app.vue and accessing it directly from there. Alternatively, you can centralize your data access by using VueX (data store), which allows for manipulation of larger amounts of data at a more advanced level.

Answer 8

Your component has its own data that is specific to it. To pass this data to other components or views, consider keeping it in app.vue and accessing it directly from there. Alternatively, you can centralize your data access by using VueX (data store), which allows for manipulation of larger amounts of data at a more advanced level.

Sending information between components in VueJS

Answer №1

Answer №2

Answer №3

Answer №4

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