vue3+TS,父组件给子组件传值，但父组件显示子组件有需要的属性？

Question

错误提示

/*
不能将类型“{ listData: any; }”分配给类型“ComponentProps<DefineComponent<{ listData: { type: ArrayConstructor; required: true; }; title: { type: StringConstructor; default: string; }; propList: { type: PropType<any[]>; required: true; }; showIndexColumn: { ...; }; showSelectColumn: { ...; }; }, ... 10 more ..., { ...; }>>”。
  类型 "{ listData: any; }" 中缺少属性 "propList"，但类型 "Omit<Readonly<ExtractPropTypes<{ listData: { type: ArrayConstructor; required: true; }; title: { type: StringConstructor; default: string; }; propList: { type: PropType<any[]>; required: true; }; showIndexColumn: { ...; }; showSelectColumn: { ...; }; }>> & { ...; } & VNodeProps & AllowedComponentProps & ComponentCus..." 中需要该属性。ts(2322)
table.vue(69, 5): 在此处声明了 "propList"。
*/

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？

Answer 1

问题出在，你propList是一个必传的，你没传啊。

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    // 你这个也是个true啊
    },
    showIndexColumn: {
      type: Boolean,
      default: false
    },
    showSelectColumn: {
      type: Boolean,
      default: false
    }
  },

你在子组件props里面写 propList 的 required 为 true，但你在父组件中：

<hy-table v-bind="contentTableConfig" :listData="dataList">

缺少 propList 属性。