我使用vue-property-decorator
,它是一个简单的组件,却收到错误消息:
[Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "message"
此消息是什么意思?以及我该如何解决?
这是我的代码,例如:
<template>
<v-layout row justify-center>
<v-dialog v-model="dialog">........</v-dialog>
</v-layout>
</template>
<script lang="ts">
import { Component, Prop } from 'vue-property-decorator';
@Component({})
export default class SomeModal extends ... {
@Prop() public dialog?: boolean;
@Prop() public message?: string;
constructor() {
super();
}
public showError(er) {
this.message = er.message;
this.dialog = true;
}
}
</script>
<style scoped lang="scss">
</style>
答案 0 :(得分:1)
我不使用vue的这种语法,但是消息很清楚:您需要定义一个data属性或一个计算变量。这意味着:
data: {
dialogData: ''
}
constructor() {
super();
this.dialogData = this.dialog;
}
或:
computed: {
dialogData() {
return this.dialog;
}
}
有关计算属性,请参见vuejs文档。
编辑:使用vue-property-decorator,可能是:
@Component
export default class YourComponent extends Vue {
// your code here...
private _dialogData: string = '';
constructor() {
super();
this._dialogData = this.dialog;
}
}