Angular 5 连接 postgreSQL

Question

我想连接到 postgreSQL 数据库。

我使用教程: http://docs.sequelizejs.com/manual/installation/getting-started

我不知道把连接数据库的代码放在哪里？

import {Sequelize} from '@angular/sequelize';
const Sequelize = require('sequelize'); 
const sequelize = new Sequelize('postgres://localhost:5432/neme_database');

sequelize.authenticate().then(() => {
 console.log('Connection has been established successfully.');
})
.catch(err => {
  console.error('Unable to connect to the database:', err);
});


const UserLogin = sequelize.define('user', {
  userName: {
    type: Sequelize.TEXT
  },
  password: {
    type: Sequelize.TEXT
  },
});


UserLogin.findAll().then(users => {
   console.log(users)
});

Answer 1

我认为您需要将代码分成至少三个文件:

配置.js

import {Sequelize} from '@angular/sequelize';
const Sequelize = require('sequelize'); 
const sequelize = new Sequelize('postgres://localhost:5432/neme_database');

export sequlize

在你的 index.js 中导入你的配置并连接到数据库

import { sequlize } from 'path-to-config/config.js`

sequelize.authenticate().then(() => {
 console.log('Connection has been established successfully.');
})
.catch(err => {
  console.error('Unable to connect to the database:', err);
});

用户模型models/user.js

export const UserLogin = sequelize.define('user', {
  userName: {
    type: Sequelize.TEXT
  },
  password: {
    type: Sequelize.TEXT
  },
});

然后在你的controller里面的函数比如

getAllUser() {
  return UserLogin.findAll()
}