ThinkPHP模型中的HAS_ONE,BELONG_TO,HAS_MANY实践

因为很熟悉DJANGO，所以对TP，要慢慢适应。

1，SQL文件

/*
Navicat MySQL Data Transfer

Source Server         : localhost_3306
Source Server Version : 50505
Source Host           : localhost:3306
Source Database       : thinkphp_inaction

Target Server Type    : MYSQL
Target Server Version : 50505
File Encoding         : 65001

Date: 2019-06-23 20:03:30
*/

;

-- ----------------------------
-- Table structure for c5_post
-- ----------------------------
DROP TABLE IF EXISTS `c5_post`;
CREATE TABLE `c5_post` (
  `post_id` ) unsigned NOT NULL AUTO_INCREMENT,
  `title` ) NOT NULL,
  `content` text NOT NULL,
  `created_at` ) NOT NULL,
  `updated_at` ) NOT NULL,
  `) NOT NULL,
  PRIMARY KEY (`post_id`)
) ENGINE DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of c5_post
-- ----------------------------
');
');

-- ----------------------------
-- Table structure for c5_user
-- ----------------------------
DROP TABLE IF EXISTS `c5_user`;
CREATE TABLE `c5_user` (
  `id` ) NOT NULL AUTO_INCREMENT,
  `username` ) NOT NULL,
  `password` ) NOT NULL,
  `created_at` ) NOT NULL,
  `updated_at` ) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `username` (`username`) USING BTREE
) ENGINE DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of c5_user
-- ----------------------------
');

-- ----------------------------
-- Table structure for c5_user_extra
-- ----------------------------
DROP TABLE IF EXISTS `c5_user_extra`;
CREATE TABLE `c5_user_extra` (
  `id` ) NOT NULL AUTO_INCREMENT,
  `email` ) NOT NULL,
  `qq` ) NOT NULL,
  `) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of c5_user_extra
-- ----------------------------
');

2，Application\Common\Conf\config.php

<?php
return array(
    //'配置项'=>'配置值'
    'DB_TYPE' => 'mysql',
    'DB_HOST' => 'localhost',
    'DB_PORT' => 3306,
    'DB_USER' => 'root',
    'DB_PWD' => 'xxxx',
    'DB_NAME' => 'thinkphp_inaction',
    'DB_PREFIX' => 'c5_'
);

3，Applicaton\Home\Model\UserModel.class.php

<?php
    namespace Home\Model;
    use Think\Model\RelationModel;

    class UserModel extends RelationModel {
        private $denyUserNames = array (
            'admin',
            'administraotr'
        );
        public $_validate = array(
            array('username', 'require', 'user is not empty'),
            array('password', 'require', 'password is not empty', 1, '', 1),
            array('username', '', 'user has existed.', 0, 'unique', 1),
            array('password', '6, 20', 'password length between 6~20', 0, 'length'),
            array('password', '/^\w{6,20}$/', 'password format is error'),
            array('password', 'repassword', 'confirm password is error', 0, 'confirm', 1),
            array('username', 'checkUsername', 'user name is illegal', 0, 'callback'),
        );

        public $_auto = array(
            array('password', 'md5', self::MODEL_BOTH, 'function'),
            array('created_at', 'time', self::MODEL_INSERT, 'function'),
            array('updated_at', 'time', self::MODEL_UPDATE, 'function')
        );

        public $_link = array(
            'extra' => array(
                'mapping_type' => self::HAS_ONE,
                'class_name' => 'UserExtra',
                'foreign_key' => 'user_id',
                'mapping_fields' => 'email, qq'
            ),
            'posts' => array(
                'mapping_type' => self::HAS_MANY,
                'class_name' => 'Post',
                'foreign_key' => 'user_id'
            )
        );

        public function checkUsername($username) {
            foreach ($this->denyUserNames as $u) {
                if (strpos($username, $u) !== false) {
                    return false;
                }
            }
            return true;
        }
    }
?>

4，Applicaton\Home\Model\PostModel.class.php

<?php
/**
 * Created by PhpStorm.
 * User: Sahara
 * Date: 2019/6/23
 * Time: 19:00
 */

namespace Home\Model;
use Think\Model\RelationModel;

class PostModel extends RelationModel {
    public $_link = array(
        'author' => array(
            'mapping_type' => self::BELONGS_TO,
            'class_name' => 'User',
            'foreign_key' => 'user_id',
        )
    );

}

5，Applicaton\Home\Model\PostViewModel.class.php

<?php
/**
 * Created by PhpStorm.
 * User: Sahara
 * Date: 2019/6/23
 * Time: 19:00
 */

namespace Home\Model;
use Think\Model\ViewModel;

class PostViewModel extends ViewModel {
    public $viewFields = array(
        'Post' => array(
            'post_id',
            'title',
            'content',
            'created_at',
            'updated_at'
        ),
        'User' => array(
            'username' => 'author',
            '_on' => 'Post.user_id=User.id'
        )
    );
}

6，Applicaton\Home\Controller\IndexController.class.php

<?php
namespace Home\Controller;
use Home\Model\PostModel;
use Home\Model\PostViewModel;
use Home\Model\UserModel;
use Think\Controller;
class IndexController extends Controller {
    public function index(){
        $user = new UserModel();
        $data = array(
            'username' => 'zhangsan',
            'password' => '111111',
            'repassword' => '111111'
        );
        if (!$user->create($data)) {
            echo $user->getError();
            exit;
        } else {
            $id = $user->add();
            print_r($user->find($id));
        }
        echo 'ok';
    }

    public function posts() {
        $m = new PostViewModel();
        $data = $m->select();
        print_r($data);
    }

    public function posts2() {
        $m = new UserModel();
        $data = $m->relation('extra')->find();
        print_r($data);
    }

    public function posts3() {
        $m = new PostModel();
        $data = $m->relation('author')->find();
        print_r($data);
    }

    public function posts4() {
        $m = new UserModel();
        $data = $m->relation('posts')->find();
        print_r($data);
    }
}