2

这是父组件:

<template lang="pug">
  .wrapper
    el-button(type="primary", @click="dialogAddUser = true") New User
    hr
    // Dialog: Add User
    add-edit-user(:dialog-visible.sync="dialogAddUser")
</template>

<script>
import * as data from '@/components/partials/data'
import AddUser from './partials/AddUser'

export default {
  name: 'users',
  components: { AddUser },

  data () {
    return {
      users: data.users,
      dialogAddUser: false
    }
  }
}
</script>

这是子组件:

<template lang="pug">
  el-dialog(width="75%", title="New User", :visible.sync="dialogVisible", top="5vh")
    div 'el-dialog-body' - content goes here
</template>

<script>
  export default {
    name: 'add-user',
    props: {
      dialogVisible: Boolean
    }
  }
</script>

我可以打开,dialog但是当使用右上角的按钮关闭对话框时,dialog我收到此错误:

避免直接改变 prop,因为只要父组件重新渲染,该值就会被覆盖。相反,使用基于道具值的数据或计算属性。正在变异的道具:“dialogVisible”

后来我尝试玩并做了类似下面的事情,但现在我什至无法打开dialog

<template lang="pug">
  el-dialog(width="75%", title="New User", :visible.sync="visibleSync", top="5vh")
    div 'el-dialog-body' - content goes here 
</template>

<script>
  export default {
    name: 'add-user',
    props: {
      dialogVisible: Boolean
    },
    watch: {
      visibleSync (val) {
        this.$emit('update:dialogVisible', val)
      }
    },
    data () {
      return {
        visibleSync: this.dialogVisible
      }
    }
  }
</script>
4

1 回答 1

3

如果visible.sync有效,则该组件正在发出一个update:visible事件。

因此,不要在子节点中发生变异,而是将事件传播给父节点,而不是:

:visible.sync="dialogVisible"

:visible="dialogVisible", v-on:update:visible="visibleSync = $event"

完整代码:

<template lang="pug">
  el-dialog(width="75%", title="New User", :visible="dialogVisible", v-on:update:visible="visibleSync = $event", top="5vh")
    div 'el-dialog-body' - content goes here 
</template>

<script>
  export default {
    name: 'add-user',
    props: {
      dialogVisible: Boolean
    },
    watch: {
      visibleSync (val) {
        this.$emit('update:dialogVisible', val)
      }
    },
    data () {
      return {
        visibleSync: this.dialogVisible
      }
    }
  }
</script>

作为另一种选择,您可以直接从v-on侦听器发出并且不使用visibleSync本地属性:

<template lang="pug">
  el-dialog(width="75%", title="New User", :visible="dialogVisible", v-on:update:visible="$emit('update:dialogVisible', $event)", top="5vh")
    div 'el-dialog-body' - content goes here 
</template>

<script>
  export default {
    name: 'add-user',
    props: {
      dialogVisible: Boolean
    }
  }
</script>
于 2018-03-26T19:37:21.743 回答