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File/image upload behavior for Yii 2
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README.md

Upload behavior for Yii 2

This behavior automatically uploads file and fills the specified attribute with a value of the name of the uploaded file. This code is inspired by, but not derived from, https://github.com/yii-dream-team/yii2-upload-behavior.

Latest Version Software License Build Status Quality Score

Installation

The preferred way to install this extension via composer.

Either run

php composer.phar require --prefer-dist mohorev/yii2-upload-behavior "*"

or add this code line to the require section of your composer.json file:

"mohorev/yii2-upload-behavior": "*"

Usage

Upload file

Attach the behavior in your model:

class Document extends ActiveRecord
{
    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            ['file', 'file', 'extensions' => 'doc, docx, pdf', 'on' => ['insert', 'update']],
        ];
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getCategory()
    {
        return $this->hasOne(Category::class, [ 'id' => 'id_category' ]);
    }

    /**
     * @inheritdoc
     */
    function behaviors()
    {
        return [
            [
                'class' => UploadBehavior::class,
                'attribute' => 'file',
                'scenarios' => ['insert', 'update'],
                'path' => '@webroot/upload/docs/{category.id}',
                'url' => '@web/upload/docs/{category.id}',
            ],
        ];
    }
}

Set model scenario in controller action:

class Controller extends Controller
{
    public function actionCreate($id)
    {
        $model = $this->findModel($id);
        $model->setScenario('insert'); // Note! Set upload behavior scenario.
        
        ...
        ...
    }
}

Example view file:

<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>
    <?= $form->field($model, 'image')->fileInput() ?>
    <div class="form-group">
        <?= Html::submitButton('Submit', ['class' => 'btn btn-primary']) ?>
    </div>
<?php ActiveForm::end(); ?>

Upload image and create thumbnails

Thumbnails processing requires yiisoft/yii2-imagine to be installed.

Attach the behavior in your model:

class User extends ActiveRecord
{
    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            ['image', 'image', 'extensions' => 'jpg, jpeg, gif, png', 'on' => ['insert', 'update']],
        ];
    }

    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            [
                'class' => \mohorev\file\UploadImageBehavior::class,
                'attribute' => 'image',
                'scenarios' => ['insert', 'update'],
                'placeholder' => '@app/modules/user/assets/images/userpic.jpg',
                'path' => '@webroot/upload/user/{id}',
                'url' => '@web/upload/user/{id}',
                'thumbs' => [
                    'thumb' => ['width' => 400, 'quality' => 90],
                    'preview' => ['width' => 200, 'height' => 200],
                    'news_thumb' => ['width' => 200, 'height' => 200, 'bg_color' => '000'],
                ],
            ],
        ];
    }
}

Example view file:

<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>
    <div class="form-group">
        <div class="row">
            <div class="col-lg-6">
                <!-- Original image -->
                <?= Html::img($model->getUploadUrl('image'), ['class' => 'img-thumbnail']) ?>
            </div>
            <div class="col-lg-4">
                <!-- Thumb 1 (thumb profile) -->
                <?= Html::img($model->getThumbUploadUrl('image'), ['class' => 'img-thumbnail']) ?>
            </div>
            <div class="col-lg-2">
                <!-- Thumb 2 (preview profile) -->
                <?= Html::img($model->getThumbUploadUrl('image', 'preview'), ['class' => 'img-thumbnail']) ?>
            </div>
        </div>
    </div>
    <?= $form->field($model, 'image')->fileInput(['accept' => 'image/*']) ?>
    <div class="form-group">
        <?= Html::submitButton('Submit', ['class' => 'btn btn-primary']) ?>
    </div>
<?php ActiveForm::end(); ?>

Behavior Options

  • attribute - The attribute which holds the attachment
  • scenarios - The scenarios in which the behavior will be triggered
  • instanceByName - Getting file instance by name, If you use UploadBehavior in RESTfull application and you do not need a prefix of the model name, set the property instanceByName = false, default value is false
  • path - the base path or path alias to the directory in which to save files.
  • url - the base URL or path alias for this file
  • generateNewName - Set true or anonymous function takes the old filename and returns a new name, default value is true
  • unlinkOnSave - If true current attribute file will be deleted, default value is true
  • unlinkOnDelete - If true current attribute file will be deleted after model deletion.
  • deleteOriginalFile - Only for UploadImageBehavior. If true original image file will be deleted after thumbs generating, default value is false.

Attention!

It is prefered to use immutable placeholder in url and path options, other words try don't use related attributes that can be changed. There's bad practice. For example:

class Track extends ActiveRecord
{
    public function getArtist()
    {
        return $this->hasOne(Artist::class, [ 'id' => 'id_artist' ]);
    }

    public function behaviors()
    {
        return [
            [
                'class' => UploadBehavior::class,
                'attribute' => 'image',
                'scenarios' => ['default'],
                'path' => '@webroot/uploads/{artist.slug}',
                'url' => '@web/uploads/{artist.slug}',
            ],
        ];
    }
}

If related model attribute slug will change, you must change folders' names too, otherwise behavior will works not correctly.

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