我想知道如何使用props和检索将对象传递给子组件。我理解如何将其作为属性,但如何传递对象并从子组件中检索对象?当我从子组件使用this.props时,我得到未定义或错误消息。
父组件
FirebaseDatabase database;
DatabaseReference myRef;
database = FirebaseDatabase.getInstance();
myRef = database.getReference("kraj");
子组件
<template>
<div>
<child-component :v-bind="props"></child-component>
</div>
</template>
<script>
import ChildComponent from "ChildComponent.vue";
export default {
name: 'ParentComponent',
mounted() {
},
props: {
firstname: 'UserFirstName',
lastname: 'UserLastName'
foo:'bar'
},
components: {
ChildComponent
},
methods: {
}
}
</script>
<style scoped>
</style>
答案 0 :(得分:15)
简单:
父组件:
<template>
<div>
<my-component :propObj="anObject"></my-component>
</div>
</template>
<script>
import ChildComponent from "ChildComponent.vue";
export default {
name: 'ParentComponent',
mounted() { },
props: {
anObject: Object
},
components: {
ChildComponent
},
}
</script>
<style scoped>
</style>
子组件:
export default {
props: {
// type, required and default are optional, you can reduce it to 'options: Object'
propObj: { type: Object, required: false, default: {"test": "wow"}},
}
}
这应该有效!
还要查看道具文档:
https://vuejs.org/v2/guide/components.html#Props
如果您想要将孩子的数据发送到父级,就像您在评论中已经指出的那样,您必须使用事件或者查看同步&#39;功能在2.3 +
中可用答案 1 :(得分:0)
这是将许多道具作为对象传递到组件中的简单解决方案
<template>
<div>
<!-- different ways to pass in props -->
<my-component v-bind="props"></my-component>
<my-component :firstname="props.firstname" :lastname="props.lastname" :foo="props.foo">
</my-component>
</div>
</template>
<script>
import ChildComponent from "ChildComponent.vue";
export default {
name: 'ParentComponent',
props: {
firstname: 'UserFirstName',
lastname: 'UserLastName'
foo:'bar'
},
components: {
ChildComponent
}
}
</script>
<template>
<div>
</div>
</template>
<script>
export default {
name: 'ChildComponent',
props: ['firstname', 'lastname', 'foo'],
mounted() {
console.log(this.props)
}
}
</script>