Upload lesson documents

common/modules/school/models/LessonImage.php

+<?php
+
+namespace common\modules\school\models;
+
+use Yii;
+
+use common\modules\school\models\Lessons;
+
+/**
+ * This is the model class for table "testings_questions_image".
+ *
+ * @property integer $id
+ * @property integer $question_id
+ * @property string $filename
+ */
+class LessonImage extends \common\components\ActiveRecordModel
+{
+    /**
+     * @inheritdoc
+     */
+    public static function tableName()
+    {
+        return 'school_lessons_image';
+    }
+
+    public function name()
+    {
+        return 'Документы для уроков';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function rules()
+    {
+        return [
+            [['lesson_id', 'filename'], 'required'],
+            [['lesson_id'], 'integer'],
+            [['filename'], 'string', 'max' => 50],
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function attributeLabels()
+    {
+        return [
+            'id' => 'ID',
+            'lesson_id' => 'Урок',
+            'filename' => 'Документ',
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function behaviors()
+    {
+        return [
+        ];
+    }
+
+    public function getLesson()
+    {
+        return $this->hasOne(Lessons::className(), ['id' => 'lesson_id']);
+    }
+
+    public function getUrl()
+    {
+        return Yii::$app->params['frontUrl'] . Lessons::IMAGES_FOLDER . $this->filename;
+    }
+}

common/modules/school/models/Lessons.php

@@ -17,6 +17,9 @@ class Lessons extends \common\components\ActiveRecordModel
 {
     const PAGE_SIZE = 10;
 
+    const IMAGES_FOLDER = '/uploads/lessons_docs/';
+
+	public $filesUpload;
     /**
      * @inheritdoc
      */
@@ -41,6 +44,7 @@ class Lessons extends \common\components\ActiveRecordModel
             [['video_id'], 'string', 'max' => 100],
             [['course_id', 'number'], 'integer'],
             [['text'], 'safe'],
+            [['filesUpload'], 'file', 'skipOnEmpty' => true, 'extensions' => 'png, jpg, jpeg, gif, rar, ai, ppt, doc, docx'],
         ];
     }
 
@@ -99,4 +103,57 @@ class Lessons extends \common\components\ActiveRecordModel
             return false;
         }
     }    
+    
+     public function getFiles()
+    {
+        return $this->hasMany(LessonImage::className(), ['lesson_id' => 'id']);
+    }
+    
+    public function getPath() 
+	{
+		return Yii::getAlias('@frontend/web') . self::IMAGES_FOLDER;
+	}
+    
+    public function upload()
+    {
+        if ($this->validate()) 
+        {
+        	if(!file_exists($this->getPath()))
+            {
+                mkdir($this->getPath(), 0777, true);
+            }
+
+            foreach ($this->filesUpload as $file) 
+            {
+            	$filename = date('dmYHis-') . uniqid() . '.' . $file->extension;
+                $file->saveAs($this->getPath() . $filename);
+
+                $image = new LessonImage;
+                $image->lesson_id = $this->id;
+                $image->filename = $filename;
+                $image->save();
+            }
+
+            return true;
+        } 
+        else 
+        {
+            return false;
+        }
+    }
+    
+    public function deleteFiles()
+    {
+    	if($this->files)
+    	{
+    		foreach ($this->files as $file) 
+    		{
+    			if(file_exists($this->getPath() . $file->filename))
+		        {
+		        	unlink($this->getPath() . $file->filename);
+		        }
+		        $file->delete();
+    		}
+    	}
+    }
 }

console/migrations/m160217_095148_create_school_lessons_image.php

+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m160217_095148_create_school_lessons_image extends Migration
+{
+    public function safeUp()
+    {
+        $tableOptions = null;
+        if ($this->db->driverName === 'mysql') 
+        {
+            $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_general_ci ENGINE=InnoDB';
+        }
+        
+        // Структура таблицы `school_lessons_image`
+ 
+        $this->createTable('school_lessons_image', [
+            'id' => Schema::TYPE_PK,
+            'filename' => Schema::TYPE_STRING . '(50) NOT NULL',
+            'lesson_id' => Schema::TYPE_INTEGER . '(11) NOT NULL', 
+        ], $tableOptions);
+        
+        $this->createIndex('FK_school_lessons_image_lessons', 'school_lessons_image', 'lesson_id');
+    }
+
+    public function safeDown()
+    {
+        $this->dropTable('school_lessons_image');
+    }
+}