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console/migrations/m181101_142752_blog_article_lang.php 2.47 KB
c237629a   Anastasia   first commit
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  <?php
      
      use yii\db\Migration;
      
      class m181101_142752_blog_article_lang extends Migration
      {
          public function up()
          {
              /**
               * Create table with language fields of blog articles
               */
              $this->createTable(
                  'blog_article_lang',
                  [
                      'id'              => $this->primaryKey(),
                      'blog_article_id' => $this->integer()
                                                 ->notNull(),
                      'language_id'     => $this->integer()
                                                ->notNull(),
                      'title'           => $this->string(255),
                      'body'            => $this->text(),
                      'body_preview'    => $this->text(),
                      'alias_id'        => $this->integer(),
                  ]
              );
              
              /**
               * Creating indexes for unique fields (field pairs)
               */
              $this->createIndex(
                  'blog_article_lang_uk',
                  'blog_article_lang',
                  [
                      'blog_article_id',
                      'language_id',
                  ],
                  true
              );
              
              $this->createIndex(
                  'blog_article_alias_uk',
                  'blog_article_lang',
                  'alias_id',
                  true
              );
              
              /**
               * Add foreign keys in blog_articles and language tables
               */
              $this->addForeignKey(
                  'blog_article_fk',
                  'blog_article_lang',
                  'blog_article_id',
                  'blog_article',
                  'id',
                  'CASCADE',
                  'CASCADE'
              );
              
              $this->addForeignKey(
                  'blog_article_lang_fk',
                  'blog_article_lang',
                  'language_id',
                  'language',
                  'id',
                  'RESTRICT',
                  'CASCADE'
              );
          }
          
          public function down()
          {
              $this->dropForeignKey('blog_article_lang_fk', 'blog_article_lang');
              $this->dropForeignKey('blog_article_fk', 'blog_article_lang');
              $this->dropIndex('blog_article_alias_uk', 'blog_article_lang');
              $this->dropIndex('blog_article_lang_uk', 'blog_article_lang');
              $this->dropTable('blog_article_lang');
          }
      }