如何访问数据库（加载器）

Question

我正在使用以下API模板：https://github.com/w3tecch/express-typescript-boilerplate

我已经为Knex编写了一个加载器，因为我不想使用Git存储库中包含的默认TypeORM。

import {MicroframeworkLoader, MicroframeworkSettings} from 'microframework-w3tec';
import * as Knex from 'knex';

import {env} from '../env';

export const knexLoader: MicroframeworkLoader = async (settings: MicroframeworkSettings | undefined) => {

    const connection = await Knex({
        client: 'mysql',
        connection: {
            host: env.db.host,
            user: env.db.username,
            password: env.db.password,
            database: env.db.database,
        },
    });

    if (settings) {
        settings.setData('connection', connection);
        settings.onShutdown(() => connection.close());
    }
};

如何在控制器使用的随机类中访问常量“连接”？

例如，如何在这里访问它？

import { sha256 } from 'js-sha256';

export class Login {

    private database;

    public checkLogin(email: string, password: string, company_id: number): boolean {
        let login = this.database.connection('users').where({
            email,
            company_id,
        }).select('id, password, salt').then((row) => {
            let hashed_password = this.hashPassword(password, login.salt);
            if (hashed_password === login.password) {
                return true;
            }
            return false;
        });
        return false;
    }

    private hashPassword(password: string, salt: string): string {
        let half: number = (salt.length / 2);
        return sha256(salt.substr(0, half) + password + salt.substr(half));
    }

    private generateSalt(): string {
        let random_number: string = Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);
        let salt_unminimized: string = sha256(random_number);
        return salt_unminimized.substr(0, 100);
    }

}