用yii2进行(curd)接口开发(普通类型)整个流程:

第一步：
理解这里的意思.
第二步：
写自己的域名.
比如http://www.demonstration.com.(本地地址的哈)。
在nginx里面新建一个文件demonstration.php(直接复制粘贴)

server {
    listen 80;charset utf-8;server_name www.demonstration.com;access_log C:/Wnmp/logs/demonstration_access.log;set  $webroot C:/Wnmp/html/demonstration/frontend;root $webroot/web;index index.php index.html index.htm;location / {
    try_files $uri $uri/ /index.php?$args;}location ~ \.php$ {
    try_files  $uri =404;fastcgi_pass   php_processes;fastcgi_index  index.php;fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;include        fastcgi_params;}location ~ ^/(js|css|images|image|files)/ {
    root $webroot;expires 1h;log_not_found off;access_log off;}location ~ ^/(attachments)/ {
    root $webroot;expires 1h;log_not_found off;access_log off;}location ~ /\.(ht|svn|git) {
    deny all;}
}

第三步：
在frontend/config/新建一个路由文件.名字为(rules.php)复制粘贴.

<?php
/*** Created by PhpStorm.* User: Chan* Date: 2018/6/8* Time: 14:14*/use yii\rest\UrlRule;return [['class'=>UrlRule::class,'controller'=>'navigation','extraPatterns' =>['form'=>'form',],],
];

第四步：在frontend/controllers里面新建一个文件.NavigationController.php

<?php
namespace frontend\controllers;
use common\models\Form;class NavigationController extends Controller
{
    //增加public function actionForm(){
    $form=new Form();$datetime = new \DateTime;$request = \Yii::$app->request;$form->name = $request->post("name");$form->phone= $request->post("phone");$form->address = $request->post("address");$form->time =$datetime->format('Y-m-d H:i:s');if($form->save()){
    return $this->data(['form'=>$form],"保存成功",0);}else{
    return $this->error("保存失败");}}//查询public  function actionIndex(){
    $gets = \Yii::$app->db->createCommand('SELECT * FROM form')->queryAll();if($gets){
    return $this->data($gets,"查询成功",0);}else{
    return $this->error("查询失败");}}//删除public  function actionDelete($id){
    $form = Form::findOne([ 'id' => $id ]);if($form==null){
    return $this->error('抱歉，这条数据在数据表是里面是没有的,不能删除!');}if($form->delete()){
    return $this->msg("删除成功");}else{
    return $this->error("数据不存在或已经删除!");}}//更新public function actionUpdate($id){
    //前端的数据//第一步:先链接数据库看看表里有没有这条数据$id1= \Yii::$app->db->createCommand("SELECT * FROM form where id=$id")->queryOne();if(!$id1){
    return $this->error("抱歉，这条数据在数据表是里面是没有不能更新!");}//第二步，数据表里面有这条数据怎么进行二次更新也能行,重复更新也能行else{
    $datetime = new \DateTime;$request = \Yii::$app->request;$name = $request->getBodyParam("name");$phone= $request->getBodyParam("phone");$address = $request->getBodyParam("address");$time =$datetime->format('Y-m-d H:i:s');//自己数据库里面的数据$result= \Yii::$app->db->createCommand()->update("{
    {%form}}",['name'=>$name,'phone'=>$phone,"address"=>$address,"time"=>$time,'id'=>$id],['id'=>$id])->execute();return $this->msg("更新成功");}}}

mysql表结构:

第五步：
自动生成一个form.php在commom/model/文件下.
怎么运行呢？增加

查询:

删除;

更新:

postman里面的数据

核心在于：
创建需要放数据,查询不用。更新用。删除不用.(因为删除是删除数据库中的某一条数据).
更新是必须数据库里面有的才能更新!!!