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slmakm
V2EX  ›  Vue.js

vue3+TS,父组件传值给子组件,但是父组件显示没有该属性

  •  
  •   slmakm · 2022-10-17 13:39:46 +08:00 · 1735 次点击
    这是一个创建于 749 天前的主题,其中的信息可能已经有所发展或是发生改变。

    父组件和配置文件

    因为是封装的原因,所以只要看:<page-content />组件和配置文件contentTableConfig

    user.vue

    <template>
      <div class="user">
        <page-content
          :contentTableConfig="contentTableConfig"
          pageName="users"
        ></page-content>
      </div>
    </template>
    
    <script lang="ts">
    import { defineComponent } from "vue";
    //引入展示 table 组件
    import PageContent from "@/components/page-content";
    //引入展示 table 组件的数据和配置
    import { contentTableConfig } from "./config/content.config";
    
    export default defineComponent({
      name: "users",
      components: {
        PageContent
      },
      setup() {
        return {
          contentTableConfig
        };
      }
    });
    </script>
    
    <style scoped>
    .content {
      padding: 20px;
      border-top: 20px solid #f5f5f5;
    }
    </style>
    
    

    content.config.ts

    export const contentTableConfig = {
      title: "用户列表",
      propList: [
        { prop: "name", label: "用户名", minWidth: "100" },
        { prop: "realname", label: "真实姓名", minWidth: "100" },
        { prop: "cellphonne", label: "电话号码", minWidth: "200" },
        { prop: "enable", label: "状态", minWidth: "100", slotName: "status" },
        {
          prop: "createAt",
          label: "创建时间",
          minWidth: "230",
          slotName: "createAt"
        },
        {
          prop: "updateAt",
          label: "更新时间",
          minWidth: "230",
          slotName: "updateAt"
        },
        { label: "操作", minWidth: "120", slotName: "handler" }
      ],
      showIndexColumn: true,
      showSelectColumn: true
    };
    
    

    子组件

    page-content.vue

    <template>
      <div class="page-content">
        <hy-table v-bind="contentTableConfig" :listData="dataList">
          <!-- 1.header 中的插槽 -->
          <template #headerHandler>
            <el-button type="primary" size="medium">新建用户</el-button>
          </template>
    
          <!-- 2.列中的插槽 -->
          <template #status="scope">
            <el-button
              plain
              size="mini"
              :type="scope.row.enable ? 'success' : 'danger'"
            >
              {{ scope.row.enable ? "启用" : "禁用" }}
            </el-button>
          </template>
          <template #createAt="scope">
            <span>{{ $filters.formatTime(scope.row.createAt) }}</span>
          </template>
          <template #updateAt="scope">
            <span>{{ $filters.formatTime(scope.row.updateAt) }}</span>
          </template>
          <template #handler>
            <div class="handle-btns">
              <el-button icon="el-icon-edit" size="mini" type="text"
                >编辑</el-button
              >
              <el-button icon="el-icon-delete" size="mini" type="text"
                >删除</el-button
              >
            </div>
          </template>
        </hy-table>
      </div>
    </template>
    
    <script lang="ts">
    import { defineComponent, computed } from "vue";
    import { useStore } from "@/store";
    
    import HyTable from "@/base-ui/table";
    
    export default defineComponent({
      components: {
        HyTable
      },
      props: {
        contentTableConfig: { //配置文件,这个要传给子组件 HyTable
          type: Object,
          require: true
        },
        pageName: {
          type: String,
          required: true
        }
      },
      setup(props) {
        const dataList = computed(() =>
          store.getters[`system/pageListData`](props.pageName)
        );
        return {
          dataList
        };
      }
    });
    </script>
    
    <style scoped>
    .page-content {
      padding: 20px;
      border-top: 20px solid #f5f5f5;
    }
    </style>
    
    

    HyTable.vue

    <template>
      <div class="hy-table">
        <div class="header">
          <slot name="header">
            <div class="title">{{ title }}</div>
            <div class="handler">
              <slot name="headerHandler"></slot>
            </div>
          </slot>
        </div>
        <el-table
          :data="listData"
          border
          style="width: 100%"
          @selection-change="handleSelectionChange"
        >
          <el-table-column
            v-if="showSelectColumn"
            type="selection"
            align="center"
            width="60"
          ></el-table-column>
          <el-table-column
            v-if="showIndexColumn"
            type="index"
            label="序号"
            align="center"
            width="80"
          ></el-table-column>
          <template v-for="propItem in propList" :key="propItem.prop">
            <el-table-column v-bind="propItem" align="center">
              <template #default="scope">
                <slot :name="propItem.slotName" :row="scope.row">
                  {{ scope.row[propItem.prop] }}
                </slot>
              </template>
            </el-table-column>
          </template>
        </el-table>
        <div class="footer">
          <slot name="footer">
            <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :page-sizes="[100, 200, 300, 400]"
              :page-size="100"
              layout="total, sizes, prev, pager, next, jumper"
              :total="400"
            >
            </el-pagination>
          </slot>
        </div>
      </div>
    </template>
    
    <script lang="ts">
    import { defineComponent, PropType } from "vue";
    
    export default defineComponent({
      props: {
        listData: {
          type: Array,
          required: true
        },
        title: { //通过 page-content 组件传过来的 contentTableConfig 对象的属性会不会自动解析,是不是这儿出问题了?
          type: String,
          default: ""
        },
        propList: {
          type: Array as PropType<any[]>,
          required: true
        },
        showIndexColumn: {
          type: Boolean,
          default: false
        },
        showSelectColumn: {
          type: Boolean,
          default: false
        }
      },
      emits: ["selectionChange"],
      setup(props, { emit }) {
        const handleSelectionChange = (value: any) => {
          emit("selectionChange", value);
        };
    
        const handleSizeChange = () => {
          return;
        };
        const handleCurrentChange = () => {
          return;
        };
    
        return {
          handleSelectionChange,
          handleSizeChange,
          handleCurrentChange
        };
      }
    });
    </script>
    
    <style scoped lang="less">
    .header {
      display: flex;
      height: 45px;
      padding: 0 5px;
      justify-content: space-between;
      align-items: center;
    
      .title {
        font-size: 20px;
        font-weight: 700;
      }
    
      .handler {
        align-items: center;
      }
    }
    
    .footer {
      margin-top: 15px;
    
      .el-pagination {
        text-align: right;
      }
    }
    </style>
    
    

    演示 contentTableConfig 传输过程

    • 1.通过 import 导入到 user.vue 里,给 page-content.vue 子组件传过去
    • 2.组件 page-content.vue 继续把 contentTableConfig 传递给子组件 HyTable.vue
    • 3.然后 HyTable.vue 组件解析

    显示错误的图片

    问题出在哪儿了?

    10 条回复    2022-10-18 19:22:54 +08:00
    Uahh
        1
    Uahh  
       2022-10-17 14:24:22 +08:00
    试试把 contentTableConfig 变量名改成 content_table_config
    moreant
        2
    moreant  
       2022-10-17 14:48:58 +08:00
    page-content.vue 组件的 props 的 contentTableConfig 类型是 Object ,volar 无法推断出类型吧
    slmakm
        3
    slmakm  
    OP
       2022-10-17 15:40:02 +08:00
    @Uahh 试过了,不行的哦
    slmakm
        4
    slmakm  
    OP
       2022-10-17 15:41:08 +08:00
    @moreant 可能你说的对,但我不知道怎么解决?流汗
    tomieric
        5
    tomieric  
       2022-10-17 15:46:27 +08:00
    ```js
    propList: {
    type: Array as PropType<any[]>,
    required: true
    },
    ```

    我只看到这个
    slmakm
        6
    slmakm  
    OP
       2022-10-17 15:53:35 +08:00
    @tomieric 是 as PropType<any[]>出问题了吗?疑惑,没看懂你说的。
    slmakm
        7
    slmakm  
    OP
       2022-10-17 15:59:15 +08:00
    moreant
        8
    moreant  
       2022-10-17 17:33:15 +08:00
    @slmakm

    page-content.vue 文件

    ```js
    import type { PropType } from 'vue'

    interface ContentProp {
    prop: string
    label: string
    minWidth: string
    }

    interface Content {
    title: string
    propList: Array<ContentProp>
    showIndexColumn: boolean
    showSelectColumn: boolean
    }

    export default defineComponent({
    props: {
    book: {
    // 提供相对 `Object` 更确定的类型
    type: Object as PropType<Content>,
    required: true
    }
    }
    })

    ```

    参考
    https://cn.vuejs.org/guide/typescript/options-api.html#typing-component-props:~:text=%E6%88%91%E4%BB%AC%E5%8F%AF%E4%BB%A5%E4%BD%BF%E7%94%A8-,PropType,-%E8%BF%99%E4%B8%AA%E5%B7%A5%E5%85%B7%E7%B1%BB%E5%9E%8B

    顺便一提,建议早用组合式与 <script setup> 早舒服
    slmakm
        9
    slmakm  
    OP
       2022-10-17 18:31:17 +08:00
    @moreant 牛皮,谢谢大哥
    current
        10
    current  
       2022-10-18 19:22:54 +08:00
    被 cue 的莫名其妙。。。
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