React框架Umi實戰(2)整合dva開發後臺管理系統

umi官方推薦結合dva使用更配哦，其實他們都是同一位開發者開發的，屬於阿里內部開源框架。

1 修改.umirc.js，開啓dva支持

// ref: https://umijs.org/config/
export default {
  plugins: [
    // ref: https://umijs.org/plugin/umi-plugin-react.html
    ['umi-plugin-react', {
      antd: true,
      dva: true,
      dva: {
          immer: true
        },
      dynamicImport: false,
      title: 'umis',
      dll: false,
      hardSource: false,
      routes: {
        exclude: [
          /components\//,
        ],
      },
    }],
  ],
}

2 修改layouts

先搞一個後臺的佈局,可以參考ANT DESIGN PRO https://pro.ant.design/
layouts\index.js

import { connect } from 'dva';
import { Table, Pagination, Popconfirm } from 'antd';
import styles from './users.css';
const PAGE_SIZE = 5;

function Users({ list: dataSource, total, page: current }) {
  function deleteHandler(id) {
    console.warn(`TODO: ${id}`);
  }

  const columns = [
    {
      title: 'Name',
      dataIndex: 'name',
      key: 'name',
      render: text => <a href="">{text}</a>,
    },
    {
      title: 'Email',
      dataIndex: 'email',
      key: 'email',
    },
    {
      title: 'Website',
      dataIndex: 'website',
      key: 'website',
    },
    {
      title: 'Operation',
      key: 'operation',
      render: (text, { id }) => (
        <span className={styles.operation}>
          <a href="">Edit</a>
          <Popconfirm title="Confirm to delete?" onConfirm={deleteHandler.bind(null, id)}>
            <a href="">Delete</a>
          </Popconfirm>
        </span>
      ),
    },
  ];

  return (
    <div className={styles.normal}>
      <div>
        <Table
          columns={columns}
          dataSource={dataSource}
          rowKey={record => record.id}
          pagination={false}
        />
        <Pagination
          className="ant-table-pagination"
          total={total}
          current={current}
          pageSize={PAGE_SIZE}
        />
      </div>
    </div>
  );
}

function mapStateToProps(state) {
  const { list, total, page } = state.users;
  console.log(state.test);
  return {
    list,
    total,
    page,
  };
}

export default connect(mapStateToProps)(Users);

layouts\index.less

.logo {
  height: 64px;
  position: relative;
  line-height: 64px;
  transition: all 0.3s;
  background: #002140;
  overflow: hidden;
  img {
    display: inline-block;
    vertical-align: middle;
    height: 32px;
  }
  h1 {
    color: white;
    display: inline-block;
    vertical-align: middle;
    font-size: 20px;
    margin: 0 0 0 12px;
    font-family: 'Myriad Pro', 'Helvetica Neue', Arial, Helvetica, sans-serif;
    font-weight: 600;
  }
}

.trigger {
  font-size: 18px;
  line-height: 64px;
  padding: 0 24px;
  cursor: pointer;
  transition: color .3s;
  .logo {
  height: 32px;
  background: rgba(255,255,255,.2);
  margin: 16px;
}
}

.sider {
  min-height: 100vh;
  box-shadow: 2px 0 6px rgba(0, 21, 41, 0.35);
  position: relative;
  z-index: 10;
  &.ligth {
    background-color: white;
    .logo {
      background: white;
      h1 {
        color: #002140;
      }
    }
  }
}

瀏覽器訪問你會看到如下效果：

3 改造users頁面，完成dva整個流程。

• 在pages下創建users目錄
• 創建index.js 會生成默認路由http://localhost:8000/users

import { connect } from 'dva';
import { Table, Pagination, Popconfirm } from 'antd';
import styles from './users.css';
const PAGE_SIZE = 5;

function Users({ list: dataSource, total, page: current }) {
  function deleteHandler(id) {
    console.warn(`TODO: ${id}`);
  }

  const columns = [
    {
      title: 'Name',
      dataIndex: 'name',
      key: 'name',
      render: text => <a href="">{text}</a>,
    },
    {
      title: 'Email',
      dataIndex: 'email',
      key: 'email',
    },
    {
      title: 'Website',
      dataIndex: 'website',
      key: 'website',
    },
    {
      title: 'Operation',
      key: 'operation',
      render: (text, { id }) => (
        <span className={styles.operation}>
          <a href="">Edit</a>
          <Popconfirm title="Confirm to delete?" onConfirm={deleteHandler.bind(null, id)}>
            <a href="">Delete</a>
          </Popconfirm>
        </span>
      ),
    },
  ];

  return (
    <div className={styles.normal}>
      <div>
        <Table
          columns={columns}
          dataSource={dataSource}
          rowKey={record => record.id}
          pagination={false}
        />
        <Pagination
          className="ant-table-pagination"
          total={total}
          current={current}
          pageSize={PAGE_SIZE}
        />
      </div>
    </div>
  );
}

function mapStateToProps(state) {
  const { list, total, page } = state.users;
  console.log(state.test);
  return {
    list,
    total,
    page,
  };
}

export default connect(mapStateToProps)(Users);

• 創建對應的model.js,因爲只有一個model所以不需要創建models目錄。但是名字必須爲model.js，不然不能自動註冊。

//只有一個model的話，可以不用建models目錄。但名字必須爲model。js
import * as usersService from './service';
export default {
  namespace: 'users',
  state: {
    list: [],
    total: null,
  },
  reducers: {
    save(state, { payload: { data: list, total } }) {
      return { ...state, list, total };
    },
  },
  effects: {
    *fetch({ payload: { page } }, { call, put }) {
      const { data} = yield call(usersService.fetch, { page });
      yield put({ type: 'save', payload: { data, total: data.length } });
    },
  },
  subscriptions: {
    setup({ dispatch, history }) {
      return history.listen(({ pathname, query }) => {
        if (pathname === '/users') {
          dispatch({ type: 'fetch', payload: query });
        }
      });
    },
  },
};

• 創建service.js 這個不需要約定名稱，你隨便起名字

import request from '../../utils/request';

export function fetch({ page = 1 }) {
  return request(`/api/users?_page=${page}&_limit=5`);
}

• 創建utils目錄，封裝統一請求api utils\request.js

import fetch from 'dva/fetch';

function checkStatus(response) {
  if (response.status >= 200 && response.status < 300) {
    return response;
  }

  const error = new Error(response.statusText);
  error.response = response;
  throw error;
}

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {object} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default async function request(url, options) {
  const response = await fetch(url, options);

  checkStatus(response);

  const data = await response.json();

  const ret = {
    data
  };
  return ret;
}

• 創建mock假數據 mock\user.js

export default {
  '/api/users': [
  {
    "id": 1,
    "name": "Leanne Graham",
    "username": "Bret",
    "email": "[email protected]",
    "address": {
      "street": "Kulas Light",
      "suite": "Apt. 556",
      "city": "Gwenborough",
      "zipcode": "92998-3874",
      "geo": {
        "lat": "-37.3159",
        "lng": "81.1496"
      }
    },
    "phone": "1-770-736-8031 x56442",
    "website": "hildegard.org",
    "company": {
      "name": "Romaguera-Crona",
      "catchPhrase": "Multi-layered client-server neural-net",
      "bs": "harness real-time e-markets"
    }
  },
  {
    "id": 2,
    "name": "Ervin Howell",
    "username": "Antonette",
    "email": "[email protected]",
    "address": {
      "street": "Victor Plains",
      "suite": "Suite 879",
      "city": "Wisokyburgh",
      "zipcode": "90566-7771",
      "geo": {
        "lat": "-43.9509",
        "lng": "-34.4618"
      }
    },
    "phone": "010-692-6593 x09125",
    "website": "anastasia.net",
    "company": {
      "name": "Deckow-Crist",
      "catchPhrase": "Proactive didactic contingency",
      "bs": "synergize scalable supply-chains"
    }
  },
  {
    "id": 3,
    "name": "Clementine Bauch",
    "username": "Samantha",
    "email": "[email protected]",
    "address": {
      "street": "Douglas Extension",
      "suite": "Suite 847",
      "city": "McKenziehaven",
      "zipcode": "59590-4157",
      "geo": {
        "lat": "-68.6102",
        "lng": "-47.0653"
      }
    },
    "phone": "1-463-123-4447",
    "website": "ramiro.info",
    "company": {
      "name": "Romaguera-Jacobson",
      "catchPhrase": "Face to face bifurcated interface",
      "bs": "e-enable strategic applications"
    }
  },
  {
    "id": 4,
    "name": "Patricia Lebsack",
    "username": "Karianne",
    "email": "[email protected]",
    "address": {
      "street": "Hoeger Mall",
      "suite": "Apt. 692",
      "city": "South Elvis",
      "zipcode": "53919-4257",
      "geo": {
        "lat": "29.4572",
        "lng": "-164.2990"
      }
    },
    "phone": "493-170-9623 x156",
    "website": "kale.biz",
    "company": {
      "name": "Robel-Corkery",
      "catchPhrase": "Multi-tiered zero tolerance productivity",
      "bs": "transition cutting-edge web services"
    }
  },
  {
    "id": 5,
    "name": "Chelsey Dietrich",
    "username": "Kamren",
    "email": "[email protected]",
    "address": {
      "street": "Skiles Walks",
      "suite": "Suite 351",
      "city": "Roscoeview",
      "zipcode": "33263",
      "geo": {
        "lat": "-31.8129",
        "lng": "62.5342"
      }
    },
    "phone": "[phone]",
    "website": "demarco.info",
    "company": {
      "name": "Keebler LLC",
      "catchPhrase": "User-centric fault-tolerant solution",
      "bs": "revolutionize end-to-end systems"
    }
  },
  {
    "id": 6,
    "name": "Mrs. Dennis Schulist",
    "username": "Leopoldo_Corkery",
    "email": "[email protected]",
    "address": {
      "street": "Norberto Crossing",
      "suite": "Apt. 950",
      "city": "South Christy",
      "zipcode": "23505-1337",
      "geo": {
        "lat": "-71.4197",
        "lng": "71.7478"
      }
    },
    "phone": "1-477-935-8478 x6430",
    "website": "ola.org",
    "company": {
      "name": "Considine-Lockman",
      "catchPhrase": "Synchronised bottom-line interface",
      "bs": "e-enable innovative applications"
    }
  },
  {
    "id": 7,
    "name": "Kurtis Weissnat",
    "username": "Elwyn.Skiles",
    "email": "[email protected]",
    "address": {
      "street": "Rex Trail",
      "suite": "Suite 280",
      "city": "Howemouth",
      "zipcode": "58804-1099",
      "geo": {
        "lat": "24.8918",
        "lng": "21.8984"
      }
    },
    "phone": "210.067.6132",
    "website": "elvis.io",
    "company": {
      "name": "Johns Group",
      "catchPhrase": "Configurable multimedia task-force",
      "bs": "generate enterprise e-tailers"
    }
  },
  {
    "id": 8,
    "name": "Nicholas Runolfsdottir V",
    "username": "Maxime_Nienow",
    "email": "[email protected]",
    "address": {
      "street": "Ellsworth Summit",
      "suite": "Suite 729",
      "city": "Aliyaview",
      "zipcode": "45169",
      "geo": {
        "lat": "-14.3990",
        "lng": "-120.7677"
      }
    },
    "phone": "586.493.6943 x140",
    "website": "jacynthe.com",
    "company": {
      "name": "Abernathy Group",
      "catchPhrase": "Implemented secondary concept",
      "bs": "e-enable extensible e-tailers"
    }
  },
  {
    "id": 9,
    "name": "Glenna Reichert",
    "username": "Delphine",
    "email": "[email protected]",
    "address": {
      "street": "Dayna Park",
      "suite": "Suite 449",
      "city": "Bartholomebury",
      "zipcode": "76495-3109",
      "geo": {
        "lat": "24.6463",
        "lng": "-168.8889"
      }
    },
    "phone": "[phone] x41206",
    "website": "conrad.com",
    "company": {
      "name": "Yost and Sons",
      "catchPhrase": "Switchable contextually-based project",
      "bs": "aggregate real-time technologies"
    }
  },
  {
    "id": 10,
    "name": "Clementina DuBuque",
    "username": "Moriah.Stanton",
    "email": "[email protected]",
    "address": {
      "street": "Kattie Turnpike",
      "suite": "Suite 198",
      "city": "Lebsackbury",
      "zipcode": "31428-2261",
      "geo": {
        "lat": "-38.2386",
        "lng": "57.2232"
      }
    },
    "phone": "024-648-3804",
    "website": "ambrose.net",
    "company": {
      "name": "Hoeger LLC",
      "catchPhrase": "Centralized empowering task-force",
      "bs": "target end-to-end models"
    }
  }
],
}

訪問http://localhost:8000/users

4 總結

• 按umi推薦的方式去創建目錄
• 注意約定名 pages目錄下的所有js都回被默認生成路由，可通過配置排出
• 省略了model的手動註冊，至於忽略namespace，我試了不行
• 各個page的model不能相互引用？不是很明白什麼意思，我試了每個page都能獲取所有的state，並不是只能獲取屬於自己的。可能是我理解有誤。
• 沒有看出來umi的好處，只是目錄的區別嗎？

這個 issues 下有關於umi按page分的討論。https://github.com/sorrycc/bl...
希望知道umi核心優勢的小夥伴留言解釋下，前端菜鳥不是很懂。

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