ソフトウェアエンジニアの技術ブログ：Software engineer tech blog – Page 617 – 随机应变 ABCD: Always Be Coding and … : хороший

CommentsとPostの紐づけ

CommentsTable.php

<?php

 namespace App\Model\Table;

 use Cake\ORM\Table;
 use Cake\Validation\Validator;

 class CommentsTable extends Table
 {
   public function initialize(array $config)
   {
     $this->addBehavior('Timestamp');
     $this->belognsTo('Posts');
   }
   public function validationDefault(Validator $validator)
   {
     $validator
       ->notEmpty('body')
       ->requirePresence('body')
     return $validator;
   }
 }

PostsTable.php

<?php

 namespace App\Model\Table;

 use Cake\ORM\Table;
 use Cake\Validation\Validator;

 class PostsTable extends Table
 {
   public function initialize(array $config)
   {
     $this->addBehavior('Timestamp');
     $this->hasMany('Comments');
   }
   public function validationDefault(Validator $validator)
   {
     $validator
       ->notEmpty('title')
       ->requirePresence('title')
       ->notEmpty('body')
       ->requirePresence('body')
       ->add('body', [
         'length' => [
           'rule' => ['minLength', 10],
           'message' => 'body length must be 10+'
         ]
       ]);
     return $validator;
   }
 }

migration plugin

[vagrant@localhost ~]$ cd cake
[vagrant@localhost cake]$ cd myblog
[vagrant@localhost myblog]$ bin/cake bake migration_snapshot Initial

Welcome to CakePHP v3.3.8 Console
---------------------------------------------------------------
App : src
Path: /home/vagrant/cake/myblog/src/
PHP : 5.6.27
---------------------------------------------------------------
[vagrant@localhost myblog]$ bin/cake migrations status
Welcome to CakePHP v3.3.8 Console

 Status  Migration ID    Migration Name
-----------------------------------------
     up  20161118150335  Initial
[vagrant@localhost myblog]$ bin/cake bake migration CreateComments post_id:integer body;string created modified

 Status  Migration ID    Migration Name
-----------------------------------------
     up  20161118150335  Initial
   down  20161118150459  CreateComments


[vagrant@localhost myblog]$ bin/cake migrations migrate
 Status  Migration ID    Migration Name
-----------------------------------------
     up  20161118150335  Initial
     up  20161118150459  CreateComments

delete post

index.ctp

  <?php foreach($posts as $post) : ?>
    <!-- <li><?= $this->Html->link($post->title, &#91;'controller'=>'Post', 'action'=>'view',$post->id&#93;); ?></li> -->
    <li><?= $this->Html->link($post->title, ['action'=>'view',$post->id]); ?>
       <?= $this->Html->link('[Edit]', ['action'=>'edit',$post->id],['class'=>'fs12']); ?>
       <?=
       $this->Form->postLink(
         '[x]',
         ['action'=>'delete', $post->id],
         ['confirm'=>'Are you sure?', 'class'=>'fs12']
       );
       ?>
     </li>
  <?php endforeach; ?>

PostsController.ctp

  public function delete($id = null)
  {
    $this->request->allowMethod(['post', 'delete']);
    $post = $this->Posts->get($id);
      if($this->Posts->delete($post)){
        $this->Flash->success('Delete Success!');
      } else {
        $this->Flash->error('Delete Error!');
      }
    return $this->redirect(['action'=>'index']);
  }

update post

PostController.php: editの関数を追記します。requestはpostにpatch, putを追加することが推奨されています。

  public function edit($id = null)
  {
    $post = $this->Posts->get($id);
    if ($this->request->is(['post', 'patch', 'put'])) {
      $post = $this->Posts->patchEntity($post, $this->request->data);
      if($this->Posts->save($post)){
        $this->Flash->success('Edit Success!');
        return $this->redirect(['action'=>'index']);
      } else {
        $this->Flash->error('Edit Error!');
      }
    }
    $this->set(compact('post'));
  }

edit.ctp: addと同じようにviewを作成します。buttonはUpdateになります。

<?php
$this->assign('title', 'Edit Post');
?>

<h1>
  <?= $this->Html->link('Back', ['action'=>'index'], ['class'=>['pull-right', 'fs12']]); ?>
  Edit Post
</h1>

<?= $this->Form->create($post); ?>
<?= $this->Form->input('title'); ?>
<?= $this->Form->input('body', ['row'=>'3']); ?>
<?= $this->Form->button('Update'); ?>

<?= $this->Form->end(); ?>

Flash helper

my_layout.ctp

<body>
    <?= $this->element('my_header'); ?>
    <?= $this->Flash->render();?>
    <div class="container">
        <?= $this->fetch('content') ?>
    </div>
</body>

Posts.Controller.php

  public function add()
  {
    $post = $this->Posts->newEntity();
    if ($this->request->is('post')) {
      $post = $this->Posts->patchEntity($post, $this->request->data);
      if($this->Posts->save($post)){
        $this->Flash->success('Add Success!');
        return $this->redirect(['action'=>'index']);
      } else {
        $this->Flash->error('Add Error!');
      }
    }
    $this->set(compact('post'));
  }
}

veiw ctpの書き方

コントローラーにメソッドを追加

<?php

// /posts/index
// /posts
// /(controller)/(action)/(options)

namespace App\Controller;

class PostsController extends AppController
{
  public function index()
  {
    $posts = $this->Posts->find('all');
      // ->order(['title' => 'DESC'])
      // ->limit(2)
      // ->where(['title like' => '%3']);
    $this->set('posts', $posts);
  }

  public function view($id = null)
  {
    $post = $this->Posts->get($id);
    $this->set(compact('post'));
  }
}

src->template->view.ctp

<?php
$this->assign('title', 'Blog Detail');
?>

<h1>
  <?= $this->Html->link('Back', ['action'=>'index'], ['class'=>['pull-right', 'fs12']]); ?>
  <?= h($post->title); ?>
</h1>

<p><?= nl2br(h($post->body)); ?></p>

Postの追加: NewEntity

<h1>
  <?= $this->Html->link('Add New', ['action'=>'add'], ['class'=>['pull-right', 'fs12']]); ?>
  Blog Posts
</h1>

  public function add()
  {
    $post = $this->Posts->newEntity();
    $this->set(compact('post'));
  }

Cakeのformヘルパー: src->template->view.ctp

<?= this->Form->create($post); ?>
<?= this->Form->input('title'); ?>
<?= this->Form->input('body', ['row'=>'3']); ?>
<?= this->Form->button('Add'); ?>

<?= this->Form->end(); ?>

データの入力

if ($this->request->is('post')){
      $post = $this->Posts->patchEntity($post, $this->request->data);
      $this->Posts->save($post);
      return $this->redirect(['action'=>'index']);
    }

validation:PostsTable.php

<?php

 namespace App\Model\Table;

 use Cake\ORM\Table;
 use Cake\Validation\Validator;

 class PostsTable extends Table
 {
   public function initialize(array $config)
   {
     $this->addBehavior('Timestamp');
   }
   public function validationDefault(Validator $validator)
   {
     $validator
       ->notEmpty('title')
       ->requirePresence('title')
       ->notEmpty('body')
       ->requirePresence('body')
       ->add('body', [
         'length' => [
           'rule' => ['minLength', 10],
           'message' => 'body length must be 10+'
         ]
       ]);
     return $validator;
   }
 }

PostsController

  public function add()
  {
    $post = $this->Posts->newEntity();
    if ($this->request->is('post')) {
      $post = $this->Posts->patchEntity($post, $this->request->data);
      if($this->Posts->save($post)){
        return $this->redirect(['action'=>'index']);
      } else {
      }
    }
    $this->set(compact('post'));
  }
}

Cakeコマンド

MVCを一気に作成するbakeコマンド

[vagrant@localhost myapp]$ bin/cake bake all posts
[vagrant@localhost myapp]$ bin/cake server -H 192.168.33.10 -p 8000

データベースの条件抽出

class PostsController extends AppController
{
  public function index()
  {
    $posts = $this->Posts->find('all')
      ->order(['title' => 'DESC'])
      ->limit(2)
      ->where(['title like' => '%3']);
    $this->set('posts', $posts);
  }
}

デフォルトレイアウト
src->Template->Layout->default.ctp
レイアウトのカスタマイズ

<!DOCTYPE html>
<html lang="ja">
<head>
    <?= $this->Html->charset() ?>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>
        <?= $cakeDescription ?>:
        <?= $this->fetch('title') ?>
    </title>
    <?= $this->Html->css('styles.css') ?>
</head>
<body>
    <div class="container">
        <?= $this->fetch('content') ?>
    </div>
</body>
</html>

PostsController.phpの編集

class PostsController extends AppController
{
  public function index()
  {
    $this->viewBuilder()->layout('my_layout');
    $posts = $this->Posts->find('all');
      // ->order(['title' => 'DESC'])
      // ->limit(2)
      // ->where(['title like' => '%3']);
    $this->set('posts', $posts);
  }
}

cssファイルはwebroot/cssにあります。

titleはindex.ctpに書くことが推奨されています。

<?php
$this->assign('title', 'blog Posts');
?>

パーツ
src->header->elementに書き込み、layoutに追記

<header>My Blog</header>

<body>
    <?= $this->element('my_header'); ?>
    <div class="container">
        <?= $this->fetch('content') ?>
    </div>
</body>

PostsController.phpはclass PostsController extends AppControllerと、AppControllerを継承しているので、AppControllerのpublic function initialize()に$this->viewBuilder()->layout(‘my_layout’);を書き込むこともあります。

リンクの張り方
HTMLヘルパー

<li><?= $this->Html->link($post->title, ['action'=>'view',$post->id]); ?></li>

URLヘルパー

<a href="<?= $this->Url->build(['action'=>'view', $post-id>]); ?>">
  <?= h(post->title); ?>
</a>

Cake.phpのインストール

Cakeは人気のあるphpのwebアプリケーションフレームワークです。centOSへのインストールは、まずcomposerをディレクトリに入れます。

curl -sS https://getcomposer.org/installer | php

次に、composerを使って、cakeをインストールしていきます。
公式サイトを参考にすると、エラーなくいけると思います。
http://book.cakephp.org/3.0/en/installation.html

[vagrant@localhost cake]$ php composer.phar create-project --prefer-dist cakephp/app myapp

%e7%84%a1%e9%a1%8c

myappに移動し、コマンドラインからサーバーを立ち上げます。

[vagrant@localhost myapp]$ bin/cake server -H 192.168.33.10 -p 8000

以下のように表示されれば、OKです。
%e7%84%a1%e9%a1%8c

完了したら、configファイルのapp.phpよりDatasourcesを探し、データベースの接続を設定していきます。東京のtimezoneは’timezone’ => ‘+09:00’,です。

加えて、bootstrap.phpでもタイムゾーンを変更します。

date_default_timezone_set('Asiz/Tokyo');

ログイン機能の実装

下のキャプチャのように、controller, model, viewにファイルを分けて作成しています。サインインデータはMysqlに格納して、ログイン時に呼び出して、判別しています。また、PostとGetでトークンの正誤判定も行っています。
%e7%84%a1%e9%a1%8c

controller.php

<?php

namespace MyApp;

class Controller {

  private $_errors;
  private $_values;

  public function __construct(){
    if(!isset($_SESSION&#91;'token'&#93;)){
      $_SESSION&#91;'token'&#93; = bin2hex(openssl_random_pseudo_bytes(16));
    }
    $this->_errors = new \stdClass();
    $this->_values = new \stdClass();
  }

  protected function setValues($key, $value){
    $this->_values->$key = $value;
  }

  public function getValues(){
    return $this->_values;
  }


  protected function setErrors($key, $error){
    $this->_errors->$key = $error;
  }

  public function getErrors($key){
    return isset($this->_errors->$key) ?  $this->_errors->$key : '';
  }

  protected function hasError(){
    return !empty(get_object_vars($this->_errors));
  }

  protected function isLoggedIn() {
    // $_SESSION['me']
    return isset($_SESSION['me']) && !empty($_SESSION['me']);
  }

  public function me(){
    return $this->isLoggedIn() ? $_SESSION['me'] : null;
  }

}

facebook SDK with composer

composerを使ったfacebook sdk
https://developers.facebook.com/docs/php/gettingstarted

[vagrant@localhost facebook]$ curl -sS https://getcomposer.org/installer | php
All settings correct for using Composer
Downloading 1.2.2...

Composer successfully installed to: /home/vagrant/facebook/composer.phar
Use it: php composer.phar

続いて、composer.jsonを作成

{
  "require" : {
    "facebook/php-sdk-v4" : "~5.0"
  }
}

その後、php composer.phar installで完了です。

jsonにautoloadを追加

{
  "require" : {
    "facebook/php-sdk-v4" : "~5.0"
  },
  "autoload":{
    "psr-4": {
      "MyApp\\": "lib/"
    }
  }
}

コマンドライン

[vagrant@localhost facebook]$ php composer.phar dump-autoload