VueJS pass all props to child component

Question

I am quite new to VueJS. In react you can easily use rest params for passing props to children. Is there a similar pattern in Vue?

Consider this parent component that has a few children components:

<template>
<header class="primary-nav">
<search-bar :config="searchBar"><search-bar>
//          ^^^^ this becomes the key on the props for SearchBar
header>
</template>

export default {
  data(){
    return {
      ... a few components ...
      searchBar : {
        model: '',
        name: 'search-bar',
        placeholder: 'Search Away',
        required:true,
        another: true
        andanother: true,
        andonemoreanotherone:true,
        thiscouldbehundredsofprops:true
      }
    }
  }
}

<template>
    <div :class="name">
        <form action="/s" method="post">
            <input type="checkbox">
            <label :for="config.name" class="icon-search">{{config.label}}</label>
            <text-input :config="computedTextInputProps"></text-input>
                        //^^^^ and so on. I don't like this config-dot property structure.
        </form>
    </div>
</template>

  export default {
    props: {
        name: String,
        required: Boolean,
        placeholder: String,
        model: String,
    },
    computed: {
     computedtextInputProps(){
       return justThePropsNeededForTheTextInput
     }
    }
 ...  

What I don't like is that the props are named-spaced with the key config, or any other arbitrary key. The text-input component ( not shown ) is a glorified input field that can take a number of attributes. I could flatten the props when the component is created, but is that generally a good idea?

I am surprised this question hasn't been asked before.

Thanks.

Edit: 10-06-2017

Related: https://github.com/vuejs/vue/issues/4962

Answer 1

Parent component

<template>
  <div id="app">
    <child-component v-bind="propsToPass"></child-component>
  </div>
</template>

<script>
  import ChildComponent from './components/child-component/child-component'

  export default {
    name: 'app',
    components: {
      ChildComponent
    },
    data () {
      return {
        propsToPass: {
          name: 'John',
          last_name: 'Doe',
          age: '29',
        }
      }
    }
  }
</script>

Child Component

<template>
  <div>
    <p>I am {{name}} {{last_name}} and i am {{age}} old</p>
    <another-child v-bind="$props"></another-child> <!-- another child here and we pass all props -->
  </div>
</template>

<script>
  import AnotherChild from "../another-child/another-child";
  export default {
    components: {AnotherChild},
    props: ['name', 'last_name', 'age'],
  }
</script>

Another Child component inside the above component

<template>
    <h1>I am saying it again: I am {{name}} {{last_name}} and i am {{age}} old</h1>
</template>

<script>
    export default {
      props: ['name', 'last_name', 'age']
    }
</script>

Answer 2

Parent component

You can pass as many props as you want to child component

Child Component

Once you are satisfied with all the props, then you can use v-bind="$props" inside your child component to retrieve all the props.

Final Result:

Done:)

Answer 3

In vue 3, addition to attributes passing, events/listeners can be also passed to child components.

Parent component

<template>
    <div>
       <Button @click="onClick">Click here</Button>
    </div>
</template>

<script>
import Button from "./Button.vue";
export default {
    methods:{
        onClick(evt) {
            // handle click event here
        }
    }
}
</script>

Child component

Button.vue

<template>
    <button v-bind="$attrs" v-on="$listeners">
        <slot />
    </button>
</template>