te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>javascript - ReactjsTypescript cannot pass array of items as property to child - Stack Overflow

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    I have a several classes in a project, created with create-react-app, and I want to pass an array of objects down to child elements, as below.

    Items.tsx

    import * as React from 'react';
import ItemTable from './ItemTable';
import { IItem } from './ItemRow';

class Items extends React.Component {
    private items = IItem[];
    ponentWillMount() {
      // connect to backend service and retrieve all Items
      items = get_items();
    }

    render() {
      return (
        <ItemTable items={this.items} />
      );
    }
}

export default Items;

    ItemsTable.tsx

    import * as React from 'react';
import { Table } from 'reactstrap';
import ItemRow from './ItemRow';

let ItemTable = (items: IItem[]) => (
  <Table>
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
        <th>Website</th>
      </tr>
    </thead>
    <tbody>
        {items.map(item => (
          <ItemRow item={item} />
        ))}
    </tbody>
  </Table>
);

export default ItemTable;

    ItemRow.tsx

    import * as React from 'react';

export interface IItem {
  name: string;
  description: string;
  website: string;
}

let ItemRow = (item: IItem) => (
  <tr>
    <td>{item.name}</td>
    <td>{item.description}</td>
    <td>{item.website}</td>
  </tr>
);

export default ItemRow;

    Sadly, during building/pilation I keep getting an error stating that type '{ items: IItem[]; }' cannot be assigned to type 'items: IItem[]'. Notice the lack of braces in the second instance when pared to the first.

    Either Typescript or React, I assume Typescript, is apparently sticking the array into an object instead of passing the array as I expect it to.

    Can anyone figure out what I might be doing wrong here?

    I have a several classes in a project, created with create-react-app, and I want to pass an array of objects down to child elements, as below.

    Items.tsx

    import * as React from 'react';
import ItemTable from './ItemTable';
import { IItem } from './ItemRow';

class Items extends React.Component {
    private items = IItem[];
    ponentWillMount() {
      // connect to backend service and retrieve all Items
      items = get_items();
    }

    render() {
      return (
        <ItemTable items={this.items} />
      );
    }
}

export default Items;

    ItemsTable.tsx

    import * as React from 'react';
import { Table } from 'reactstrap';
import ItemRow from './ItemRow';

let ItemTable = (items: IItem[]) => (
  <Table>
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
        <th>Website</th>
      </tr>
    </thead>
    <tbody>
        {items.map(item => (
          <ItemRow item={item} />
        ))}
    </tbody>
  </Table>
);

export default ItemTable;

    ItemRow.tsx

    import * as React from 'react';

export interface IItem {
  name: string;
  description: string;
  website: string;
}

let ItemRow = (item: IItem) => (
  <tr>
    <td>{item.name}</td>
    <td>{item.description}</td>
    <td>{item.website}</td>
  </tr>
);

export default ItemRow;

    Sadly, during building/pilation I keep getting an error stating that type '{ items: IItem[]; }' cannot be assigned to type 'items: IItem[]'. Notice the lack of braces in the second instance when pared to the first.

    Either Typescript or React, I assume Typescript, is apparently sticking the array into an object instead of passing the array as I expect it to.

    Can anyone figure out what I might be doing wrong here?

    • javascript
    • arrays
    • reactjs
    • typescript
    • properties
    Share Improve this question edited Dec 29, 2022 at 18:15 dreambold 3,0601 gold badge16 silver badges31 bronze badges asked Dec 14, 2017 at 2:59 Chris BondChris Bond 1411 silver badge11 bronze badges
    Add a ment  | 

    1 Answer 1

    Reset to default 14

    You need to pass props to your ItemTable, not the items directly

    let ItemTable = (items: IItem[]) => (

    Should be

    let ItemTable = (props: {items: IItem[]}) => (
  const {items} = props;

    Which can also be shortened as

    let ItemTable = ({items}: {items: IItem[]}) => (

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