安装 Yii
创建工作目录
mkdir yii2-rest
cd yii2-rest创建 composer.json
{
"require": {
"yiisoft/yii2": "~2.0.0"
},
"repositories": [
{
"type": "composer",
"url": "https://asset-packagist.org"
}
]
}然后运行 composer install 命令。
写一个 Hello World
创建 web/index.php
<?php
// comment out the following two lines when deployed to production
defined('YII_DEBUG') or define('YII_DEBUG', true);
defined('YII_ENV') or define('YII_ENV', 'dev');
require(__DIR__ . '/../vendor/autoload.php');
require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');
$config = require __DIR__ . '/../config.php';
(new yii\web\Application($config))->run();创建 config.php
<?php
return [
'id' => 'yii2-rest',
// the basePath of the application will be the `yii2-rest` directory
'basePath' => __DIR__,
// this is where the application will find all controllers
'controllerNamespace' => 'api\controllers',
// set an alias to enable autoloading of classes from the 'api' namespace
'aliases' => [
'@api' => __DIR__,
],
];创建 controllers/SiteController.php
<?php
namespace api\controllers;
use yii\web\Controller;
class SiteController extends Controller
{
public function actionIndex()
{
return 'Hello World!';
}
}然后运行如下命令启动内置 web 服务器。
vendor/bin/yii serve --docroot=./web在浏览器中打开 http://localhost:8080 应该就可以看到 “Hello World！”
创建一个 REST API
首先添加 MySQL 数据库配置。
'components' => [
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=127.0.0.1;dbname=rest_api',
'username' => 'root',
'password' => '123456',
'charset' => 'utf8mb4',
],
]然后使用 Yii Migrate 创建表。
vendor/bin/yii migrate/create --appconfig=config.php create_post_table --fields="title:string,body:text"
vendor/bin/yii migrate/up --appconfig=config.php创建 models/Post.php
<?php
namespace api\models;
use yii\db\ActiveRecord;
class Post extends ActiveRecord
{
public static function tableName()
{
return '{{post}}';
}
}创建 controller/PostController.php
<?php
namespace api\controllers;
use yii\rest\ActiveController;
class PostController extends ActiveController
{
public $modelClass = 'api\models\Post';
public function behaviors()
{
// remove rateLimiter which requires an authenticated user to work
$behaviors = parent::behaviors();
unset($behaviors['rateLimiter']);
return $behaviors;
}
}启用 JSON 输入
'request' => [
'parsers' => [
'application/json' => 'yii\web\JsonParser',
]
],配置URL规则
'urlManager' => [
'enablePrettyUrl' => true,
'enableStrictParsing' => true,
'showScriptName' => false,
'rules' => [
['class' => 'yii\rest\UrlRule', 'controller' => 'post'],
],
],现在我们就可以提供如下 REST API ：
GET /posts - 列出所有帖子
GET /posts/1 - 显示 ID 为 1 的帖子
POST /posts - 创建一个帖子
UPDATE /posts/1 - 更新 ID 为 1 的帖子
PATCH /posts/1 - 更新 ID 为 1 的帖子
DELETE /posts/1 - 删除 ID 为 1 的帖子参考：
https://www.yiiframework.com/doc/guide/2.0/zh-cn/tutorial-yii-as-micro-framework
https://github.com/tanghengzhi/yii2-rest
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