Merge pull request #15 from Horat1us/feature/file-loader-behavior

Create file loader behavior

composer.json

@@ -8,7 +8,8 @@
     "nesbot/carbon": "^1.22"
   },
   "require-dev": {
-    "phpunit/phpunit": "^6.2"
+    "phpunit/phpunit": "^6.2",
+    "fzaninotto/faker": "^1.7"
   },
   "keywords": [
     "yii2",

src/Behaviors/FileLoaderBehavior.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Horat1us\Yii\Behaviors;
+
+use yii\base\Behavior;
+use yii\base\Model;
+use yii\web\UploadedFile;
+
+class FileLoaderBehavior extends Behavior
+{
+    /** @var string */
+    public $attribute;
+
+    /** @var bool */
+    public $multiple = false;
+
+    public function events()
+    {
+        return [
+            Model::EVENT_BEFORE_VALIDATE => 'load',
+        ];
+    }
+
+    public function load()
+    {
+        $this->owner->{$this->attribute} = $this->multiple
+            ? UploadedFile::getInstances($this->owner, $this->attribute)
+            : UploadedFile::getInstance($this->owner, $this->attribute);
+    }
+}

tests/AbstractTestCase.php

@@ -39,5 +39,6 @@ public function tearDown()
     {
         \Yii::$app = null;
         \Yii::$container = new Container();
+        $_FILES = [];
     }
 }

tests/Behaviors/FileLoaderBehaviorTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Horat1us\Yii\Tests\Behaviors;
+
+use Faker\Factory;
+use Horat1us\Yii\Tests\AbstractTestCase;
+use Horat1us\Yii\Tests\Mocks\FileLoaderBehaviorMock;
+use yii\web\UploadedFile;
+
+class FileLoaderBehaviorTest extends AbstractTestCase
+{
+    public function setUp()
+    {
+        $faker = Factory::create();
+        $file = $faker->image();
+        $_FILES = [
+            'FileLoaderBehaviorMock' => [
+                'name' => [
+                    'file' => $faker->name,
+                ],
+                'type' => [
+                    'file' => 'application/octet-stream',
+                ],
+                'tmp_name' => [
+                    'file' => $file,
+                ],
+                'error' => [
+                    'file' => 0,
+                ],
+                'size' => [
+                    'file' => filesize($file),
+                ],
+            ],
+        ];
+        return parent::setUp();
+    }
+
+    public function testLoadingSingleFile()
+    {
+        $model = new FileLoaderBehaviorMock();
+
+        $model->validate();
+        $this->assertInstanceOf(UploadedFile::class, $model->file);
+    }
+
+    public function testLoadingMultipleFiles()
+    {
+        $model = new FileLoaderBehaviorMock(['multiple' => true,]);
+        $model->validate();
+        $this->assertNotEmpty($model->file);
+        $this->assertTrue(is_array($model->file));
+        $this->assertGreaterThanOrEqual(1, count($model->file));
+    }
+}

tests/Mocks/FileLoaderBehaviorMock.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Horat1us\Yii\Tests\Mocks;
+
+use Horat1us\Yii\Behaviors\FileLoaderBehavior;
+use yii\db\ActiveRecord;
+use yii\web\UploadedFile;
+
+class FileLoaderBehaviorMock extends ActiveRecord
+{
+    /** @var bool */
+    public $multiple = false;
+
+    /** @var UploadedFile|UploadedFile[] */
+    public $file;
+
+    public function behaviors()
+    {
+        return [
+            'file' => [
+                'class' => FileLoaderBehavior::class,
+                'attribute' => 'file',
+                'multiple' => $this->multiple,
+            ],
+        ];
+    }
+}