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<?php |
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namespace RazonYang\Yii2\Uploader; |
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use yii\di\Instance; |
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use yii\web\UploadedFile; |
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use Yii; |
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/** |
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* UploadModelTrait defines an universal upload logic. |
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*/ |
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trait UploadModelTrait |
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{ |
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/** |
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* @var UploadedFile |
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*/ |
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public $file; |
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/** |
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* @var UploaderInterface |
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*/ |
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public $uploader = 'uploader'; |
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/** |
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* @var string |
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*/ |
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public $tooBig; |
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/** |
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* @var string |
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*/ |
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public $tooSmall; |
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public function init() |
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{ |
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parent::init(); |
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if ($this->tooBig === null) { |
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$this->tooBig = Yii::t('yii', 'The file "{file}" is too big. Its size cannot exceed {formattedLimit}.'); |
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} |
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if ($this->tooSmall === null) { |
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$this->tooSmall = Yii::t('yii', 'The file "{file}" is too small. Its size cannot be smaller than {formattedLimit}.'); |
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} |
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$this->uploader = Instance::ensure($this->uploader, UploaderInterface::class); |
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} |
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/** |
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* @var array a list of file name extensions that are allowed to be uploaded. |
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*/ |
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private $extensions = []; |
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/** |
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* Returns allowed extensions. |
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* |
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* @return array |
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*/ |
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public function getExtensions(): array |
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{ |
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return $this->extensions; |
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} |
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/** |
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* Sets allowed extensions. |
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* |
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* @param string|array $extensions |
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*/ |
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public function setExtensions($extensions) |
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{ |
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$this->extensions = is_array($extensions) ? $extensions : explode(',', $extensions); |
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} |
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/** |
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* @var int the minimum number of bytes required for the uploaded file. |
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*/ |
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public $minSize; |
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/** |
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* @var int the maximum number of bytes required for the uploaded file. |
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*/ |
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public $maxSize; |
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/** |
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* @var array|string a list of file MIME types that are allowed to be uploaded. |
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*/ |
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public $mimeTypes; |
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/** |
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* @var bool whether to check file type (extension) with mime-type. If extension produced by |
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* file mime-type check differs from uploaded file extension, the file will be considered as invalid. |
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*/ |
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public $checkExtensionByMimeType = true; |
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public function rules() |
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{ |
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return [ |
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[['file'], 'required'], |
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[ |
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'file', |
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'file', |
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'extensions' => $this->extensions, |
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'mimeTypes' => $this->mimeTypes, |
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'checkExtensionByMimeType' => $this->checkExtensionByMimeType, |
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'minSize' => $this->minSize, |
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'maxSize' => $this->maxSize, |
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'tooBig' => $this->tooBig, |
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'tooSmall' => $this->tooSmall, |
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], |
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]; |
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} |
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/** |
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* Returns the filename. |
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* |
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* @return string |
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*/ |
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protected function getFilename(): string |
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{ |
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$filename = md5(uniqid('', true)); |
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$extension = $this->file->getExtension(); |
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if ($extension) { |
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$filename .= '.' . $extension; |
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} |
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$paths = [ |
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date('Ymd'), |
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$filename |
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]; |
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return implode('/', array_filter($paths)); |
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} |
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/** |
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* Uploads file and returns the URL, it is your responsibility to validate before uploading. |
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* |
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* @return string |
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*/ |
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protected function upload(): string |
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{ |
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$filename = $this->getFilename(); |
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return $this->uploader->saveFile($filename, $this->file->tempName); |
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} |
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} |
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razonyang /
yii2-uploader
