Deno MySQL 增删查改 (包含页面)
视频演示：https://www.bilibili.com/video/BV1BT4y1E7Nh/?p=10
一起来完成以下步骤:
-
使用之前工程代码(09.MySQL增删查改API)),如果你还没有看过09视频，建议看一下
-
添加CRUD页面，使用ejs 页面模板
-
修改Controller相应的CRUD代码(Service到Repository层无需修改代码)
-
测试
#controllers/employeeController.ts
//后台redirect
import { Context, REDIRECT_BACK } from "https://deno.land/x/oak/mod.ts";
import { Employee } from "../models/employee.ts";
import employeeService from "../services/employeeService.ts";
//解析Form
import { multiParser } from 'https://raw.githubusercontent.com/deligenius/multiparser/master/mod.ts'
const { cwd } = Deno;
class Controller {
static async list(ctx: any) {
//cwd获取当前工程目录
//注意 ' !== `
//获取所有员工
const employees = await employeeService.findAll();
ctx.render(`${cwd()}/views/list.ejs`, {
data: { employees }
});
}
//新增
static async new(ctx: any) {
let employee = {} as Employee;
ctx.render(`${cwd()}/views/form.ejs`, {
data: employee
});
}
//保存
static async save(ctx: Context) {
const strEmployee = JSON.stringify(await multiParser(ctx.request.serverRequest));
const saveEmployee: Employee = JSON.parse(strEmployee);
//如果ID是空，将保存。否则修改
if (!saveEmployee.id) {
const result = await employeeService.save(saveEmployee);
} else {
const result = await employeeService.update(saveEmployee);
}
//保存成功后调转到list页面
ctx.response.redirect(REDIRECT_BACK, "/");
}
//修改页面
static async edit(ctx: any) {
const id = ctx.params.id;
//根据ID获取员工
const employees = await employeeService.findById(id);
const updateEmployee = employees[0];
ctx.render(`${cwd()}/views/form.ejs`, {
data: updateEmployee
});
}
//删除
static async delete(ctx: any) {
const id = ctx.params.id;
//根据ID获取员工
const result = await employeeService.deleteById(id);
//删除成功后调转到list页面
ctx.response.redirect(REDIRECT_BACK, "/");
}
}
export default Controller;
#database/database.ts
import { Client } from "https://deno.land/x/mysql/mod.ts"
const client = await new Client().connect({
hostname: "127.0.0.1",
username: "root",
db: "deno",
poolSize: 3,
password: "123456"
});
export default client;
#models/employee.ts
export interface Employee{
id: number,
name: string,
age: number
}
#routers/employeeRouter.ts
import { Router } from "https://deno.land/x/oak/mod.ts";
import Controller from "../controllers/employeeController.ts";
const router = new Router();
router.get("/",Controller.list);
//新增页面
router.get("/form",Controller.new);
//修改页面
router.get("/form/:id",Controller.edit);
//保存
router.post("/save",Controller.save);
//删除
router.get("/delete/:id",Controller.delete);
export default router;
#services/employeeService.ts
import { Employee } from "../models/employee.ts";
import emlpoyeeRepo from "../repositories/employeeRepo.ts";
class employeeService{
static async save(employee: Employee){
return emlpoyeeRepo.save(employee);
}
static async update(employee: Employee){
return emlpoyeeRepo.update(employee);
}
static async findById(id: number){
return emlpoyeeRepo.findById(id);
}
static async findAll(){
return emlpoyeeRepo.findAll();
}
static async deleteById(id: number){
return emlpoyeeRepo.deleteById(id);
}
}
export default employeeService;
#repositories/employeeRepo.ts
import client from "../database/database.ts";
import { Employee } from "../models/employee.ts";
class employeeRepo {
//新增
static async save(employee: Employee) {
let result = await client.execute(
`insert into employee(name,age) values(?,?)`,
[employee.name, employee.age]);
employee.id = Number(result.lastInsertId);
console.log(result);
return employee;
}
//更新
static async update(employee: Employee) {
let result = await client.execute(`update employee set name = ?,age= ? where id = ?`,
[employee.name, employee.age, employee.id]);
console.log(result);
return employee;
}
//根据ID获取
static async findById(id: number) {
const employee = await client.query(
"select * from employee where id = ?",
[id]
);
console.log(employee);
return employee;
}
//获取所有
static async findAll() {
const employees = await client.query(
"select * from employee"
);
console.log(employees);
return employees;
}
//根据ID删除
static async deleteById(id: number) {
let result = await client.execute(`delete from employee where id = ?`, [id]);
console.log(result);
return true;
}
}
export default employeeRepo;
#main.ts
import { Application } from "https://deno.land/x/oak/mod.ts"
import {viewEngine,engineFactory,adapterFactory} from "https://deno.land/x/view_engine/mod.ts";
import router from "./routers/employeeRouter.ts";
const ejsEngine = engineFactory.getEjsEngine();
const oakAdapter = adapterFactory.getOakAdapter();
const app = new Application();
app.use(viewEngine(oakAdapter,ejsEngine));
app.use(router.routes());
app.use(router.allowedMethods());
console.log("Server Port 8000");
await app.listen({port: 8000 })
#views/form.html
Manage Employees
#
Name
Age
Email
Address
Phone
Actions
<% data.employees.forEach(function(employee){ %>
<%= employee.id%>
<%= employee.name%>
<%= employee.age%>
[email protected]
89 Chiaroscuro Rd, Portland, USA
(171) 555-2222
<% }); %>