Javascript 我需要使用React和MongoDB创建管理页面

我已经在amazon服务器和前端安装了mongoDB，并写在React.js上。我需要使用“react Admin”创建管理页面，但我不知道如何使用我的mongoDB创建管理页面，因为它们不提供“react Admin”使用的数据提供程序功能

我试图编写自己的数据提供者来路由和管理我的查询和响应，但由于缺乏经验，我失败了

import { stringify } from 'query-string';
import {
    fetchUtils,
    GET_LIST,
    GET_ONE,
    GET_MANY,
    GET_MANY_REFERENCE,
    CREATE,
    UPDATE,
    UPDATE_MANY,
    DELETE,
    DELETE_MANY,
} from 'react-admin';

/**
 * Maps react-admin queries to a json-server powered REST API
 *
 * @see https://github.com/typicode/json-server
 * @example
 * GET_LIST     => GET http://my.api.url/posts?_sort=title&_order=ASC&_start=0&_end=24
 * GET_ONE      => GET http://my.api.url/posts/123
 * GET_MANY     => GET http://my.api.url/posts/123, GET http://my.api.url/posts/456, GET http://my.api.url/posts/789
 * UPDATE       => PUT http://my.api.url/posts/123
 * CREATE       => POST http://my.api.url/posts/123
 * DELETE       => DELETE http://my.api.url/posts/123
 */

export default (apiUrl, httpClient = fetchUtils.fetchJson) => {

/**
 * @param {String} type One of the constants appearing at the top if this file, e.g. 'UPDATE'
 * @param {String} resource Name of the resource to fetch, e.g. 'posts'
 * @param {Object} params The data request params, depending on the type
 * @returns {Object} { url, options } The HTTP request parameters
 */
const convertDataRequestToHTTP = (type, resource, params) => {

    let url = '';
    const options = {};
    switch (type) {
        case GET_LIST: {
            const { page, perPage } = params.pagination;
            const { field, order } = params.sort;
            const query = {
                ...fetchUtils.flattenObject(params.filter),
                _sort: field,
                _order: order,
                _start: (page - 1) * perPage,
                _end: page * perPage,
            };
            url = `${apiUrl}/${resource}?${stringify(query)}`;
            break;
        }
        case GET_ONE:
            url = `${apiUrl}/${resource}/${params.id}`;
            break;
        case GET_MANY_REFERENCE: {
            const { page, perPage } = params.pagination;
            const { field, order } = params.sort;
            const query = {
                ...fetchUtils.flattenObject(params.filter),
                [params.target]: params.id,
                _sort: field,
                _order: order,
                _start: (page - 1) * perPage,
                _end: page * perPage,
            };
            url = `${apiUrl}/${resource}?${stringify(query)}`;
            break;
        }
        case UPDATE:
            url = `${apiUrl}/${resource}/${params.id}`;
            options.method = 'PUT';
            options.body = JSON.stringify(params.data);
            break;
        case CREATE:
            url = `${apiUrl}/${resource}`;
            options.method = 'POST';
            options.body = JSON.stringify(params.data);
            break;
        case DELETE:
            url = `${apiUrl}/${resource}/${params.id}`;
            options.method = 'DELETE';
            break;
        case GET_MANY: {
            const query = {
                [`id_like`]: params.ids.join('|'),
            };
            url = `${apiUrl}/${resource}?${stringify(query)}`;
            break;
        }
        default:
            throw new Error(`Unsupported fetch action type ${type}`);
    }
    console.log(url);
    return { url, options };
};

/**
 * @param {Object} response HTTP response from fetch()
 * @param {String} type One of the constants appearing at the top if this file, e.g. 'UPDATE'
 * @param {String} resource Name of the resource to fetch, e.g. 'posts'
 * @param {Object} params The data request params, depending on the type
 * @returns {Object} Data response
 */
const convertHTTPResponse = (response, type, resource, params) => {
    const { headers, json } = response;
    switch (type) {
        case GET_LIST:
        case GET_MANY_REFERENCE:
            if (!headers.has('x-total-count')) {
                throw new Error(
                    'The X-Total-Count header is missing in the HTTP Response. The jsonServer Data Provider expects responses for lists of resources to contain this header with the total number of results to build the pagination. If you are using CORS, did you declare X-Total-Count in the Access-Control-Expose-Headers header?'
                );
            }

            return {
                data: json,
                total: parseInt(
                    headers
                        .get('x-total-count')
                        .split('/')
                        .pop(),
                    10
                ),
            };
        case CREATE:
            return { data: { ...params.data, id: json.id } };
        default:
            return { data: json };
    }
};

/**
 * @param {string} type Request type, e.g GET_LIST
 * @param {string} resource Resource name, e.g. "posts"
 * @param {Object} payload Request parameters. Depends on the request type
 * @returns {Promise} the Promise for a data response
 */

return (type, resource, params) => {
    console.log(type, resource, params);
    // json-server doesn't handle filters on UPDATE route, so we fallback to calling UPDATE n times instead
    if (type === UPDATE_MANY) {
        return Promise.all(
            params.ids.map(id =>
                httpClient(`${apiUrl}/${resource}/${id}`, {
                    method: 'PUT',
                    body: JSON.stringify(params.data),
                })
            )
        ).then(responses => ({
            data: responses.map(response => response.json),
        }));
    }
    // json-server doesn't handle filters on DELETE route, so we fallback to calling DELETE n times instead
    if (type === DELETE_MANY) {
        return Promise.all(
            params.ids.map(id =>
                httpClient(`${apiUrl}/${resource}/${id}`, {
                    method: 'DELETE',
                })
            )
        ).then(responses => ({
            data: responses.map(response => response.json),
        }));
    }
    const { url, options } = convertDataRequestToHTTP(
        type,
        resource,
        params
    );

    httpClient(url, options).then(response =>
        convertHTTPResponse(response, type, resource, params)
    );
};

})

此功能用于：

• GET_LIST=>GET
• GET_ONE=>GET
• GET_MANY=>GET，GET，GET
• 更新=>PUT
• 创建=>POST
• 删除=>删除 */

但我需要：

• GET_LIST=>GET？$filter={}&$limit={}&$skip={}&$sort={}
• GET_ONE=>GET？$filter={{u id:'1'}
• 更新=>PUT？$filter={{u id:'1'}
• CREATE=>POST？$filter={u id:'1'}
• DELETE=>DELETE？$filter={u id:'1'} */

---

您必须编写自己的dataProvider.js文件来支持API服务器，只需保持所有函数名以及返回数据和数据类型相同，React admin已经在其文档中描述了这一点。请参阅：在本页末尾，您将看到它