Commit e3981be1 by Gudz Taras

Added image validator

parent 115487a8
<?php
/**
* Image validator class file.
*
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\validators;
use Yii;
use yii\web\UploadedFile;
use yii\helpers\FileHelper;
/**
* ImageValidator verifies if an attribute is receiving a valid image.
*
* @author Taras Gudz <gudz.taras@gmail.com>
* @since 2.0
*/
class ImageValidator extends FileValidator
{
/**
* @var string the error message used when the uploaded file is not an image.
* You may use the following tokens in the message:
*
* - {attribute}: the attribute name
* - {file}: the uploaded file name
*/
public $notImage;
/**
* @var integer the minimum width in pixels.
* Defaults to null, meaning no limit.
* @see underWidth
*/
public $minWidth;
/**
* @var integer the maximum width in pixels.
* Defaults to null, meaning no limit.
* @see overWidth
*/
public $maxWidth;
/**
* @var integer the minimum height in pixels.
* Defaults to null, meaning no limit.
* @see underHeight
*/
public $minHeight;
/**
* @var integer the maximum width in pixels.
* Defaults to null, meaning no limit.
* @see overWidth
*/
public $maxHeight;
/**
* @var array|string a list of file mime types that are allowed to be uploaded.
* This can be either an array or a string consisting of file mime types
* separated by space or comma (e.g. "image/jpeg, image/png").
* Mime type names are case-insensitive. Defaults to null, meaning all mime types
* are allowed.
* @see wrongMimeType
*/
public $mimeTypes;
/**
* @var string the error message used when the image is under [[minWidth]].
* You may use the following tokens in the message:
*
* - {attribute}: the attribute name
* - {file}: the uploaded file name
* - {limit}: the value of [[minWidth]]
*/
public $underWidth;
/**
* @var string the error message used when the image is over [[maxWidth]].
* You may use the following tokens in the message:
*
* - {attribute}: the attribute name
* - {file}: the uploaded file name
* - {limit}: the value of [[maxWidth]]
*/
public $overWidth;
/**
* @var string the error message used when the image is under [[minHeight]].
* You may use the following tokens in the message:
*
* - {attribute}: the attribute name
* - {file}: the uploaded file name
* - {limit}: the value of [[minHeight]]
*/
public $underHeight;
/**
* @var string the error message used when the image is over [[maxHeight]].
* You may use the following tokens in the message:
*
* - {attribute}: the attribute name
* - {file}: the uploaded file name
* - {limit}: the value of [[maxHeight]]
*/
public $overHeight;
/**
* @var string the error message used when the file has an mime type
* that is not listed in [[mimeTypes]].
* You may use the following tokens in the message:
*
* - {attribute}: the attribute name
* - {file}: the uploaded file name
* - {mimeTypes}: the value of [[mimeTypes]]
*/
public $wrongMimeType;
/**
* Initializes the validator.
*/
public function init()
{
parent::init();
if ($this->notImage === null) {
$this->notImage = Yii::t('yii', 'The file "{file}" is not an image.');
}
if ($this->underWidth === null) {
$this->underWidth = Yii::t('yii', 'The file "{file}" is too small. The width cannot be smaller than {limit} pixels.');
}
if ($this->underHeight === null) {
$this->underHeight = Yii::t('yii', 'The file "{file}" is too small. The height cannot be smaller than {limit} px.');
}
if ($this->overWidth === null) {
$this->overWidth = Yii::t('yii', 'The file "{file}" is too large. The width cannot be larger than {limit} px.');
}
if ($this->overHeight === null) {
$this->overHeight = Yii::t('yii', 'The file "{file}" is too large. The height cannot be larger than {limit} px.');
}
if ($this->wrongMimeType === null) {
$this->wrongMimeType = Yii::t('yii', 'Only files with these mimeTypes are allowed: {mimeTypes}.');
}
if (!is_array($this->mimeTypes)) {
$this->mimeTypes = preg_split('/[\s,]+/', strtolower($this->mimeTypes), -1, PREG_SPLIT_NO_EMPTY);
}
}
/**
* Validates the attribute of the object using {@link validateImage}.
* If there is any error, the error message is added to the object.
* @param \yii\base\Model $object the object being validated
* @param string $attribute the attribute being validated
*/
public function validateAttribute($object, $attribute)
{
parent::validateAttribute($object, $attribute);
if ($object->hasErrors()) {
return;
}
if ($this->maxFiles > 1) {
$files = $object->$attribute;
$object->$attribute = array_values($files);
foreach ($files as $file) {
$this->validateImage($object, $attribute, $file);
}
} else {
$file = $object->$attribute;
$this->validateImage($object, $attribute, $file);
}
}
/**
* Internally validates a file object.
* @param \yii\base\Model $object the object being validated
* @param string $attribute the attribute being validated
* @param UploadedFile $image uploaded file passed to check against a set of rules
*/
public function validateImage($object, $attribute, $image)
{
if (!empty($this->mimeTypes) && !in_array(FileHelper::getMimeType($image->tempName), $this->mimeTypes, true)) {
$this->addError($object, $attribute, $this->wrongMimeType, ['file' => $image->name, 'mimeTypes' => implode(', ', $this->mimeTypes)]);
}
if (false === ($imageInfo = getimagesize($image->tempName))) {
$this->addError($object, $attribute, $this->notImage, ['file' => $image->name]);
return;
}
list($width, $height, $type) = $imageInfo;
if ($width == 0 || $height == 0) {
$this->addError($object, $attribute, $this->notImage, ['file' => $image->name]);
return;
}
if ($this->minWidth !== null && $width < $this->minWidth) {
$this->addError($object, $attribute, $this->underWidth, ['file' => $image->name, 'limit' => $this->minWidth]);
}
if ($this->minHeight !== null && $height < $this->minHeight) {
$this->addError($object, $attribute, $this->underHeight, ['file' => $image->name, 'limit' => $this->minHeight]);
}
if ($this->maxWidth !== null && $width > $this->maxWidth) {
$this->addError($object, $attribute, $this->overWidth, ['file' => $image->name, 'limit' => $this->maxWidth]);
}
if ($this->maxHeight !== null && $height > $this->maxHeight) {
$this->addError($object, $attribute, $this->overHeight, ['file' => $image->name, 'limit' => $this->maxHeight]);
}
}
}
...@@ -31,6 +31,7 @@ use yii\base\NotSupportedException; ...@@ -31,6 +31,7 @@ use yii\base\NotSupportedException;
* - `exist`: [[ExistValidator]] * - `exist`: [[ExistValidator]]
* - `file`: [[FileValidator]] * - `file`: [[FileValidator]]
* - `filter`: [[FilterValidator]] * - `filter`: [[FilterValidator]]
* - `image`: [[ImageValidator]]
* - `in`: [[RangeValidator]] * - `in`: [[RangeValidator]]
* - `integer`: [[NumberValidator]] * - `integer`: [[NumberValidator]]
* - `match`: [[RegularExpressionValidator]] * - `match`: [[RegularExpressionValidator]]
...@@ -59,6 +60,7 @@ abstract class Validator extends Component ...@@ -59,6 +60,7 @@ abstract class Validator extends Component
'exist' => 'yii\validators\ExistValidator', 'exist' => 'yii\validators\ExistValidator',
'file' => 'yii\validators\FileValidator', 'file' => 'yii\validators\FileValidator',
'filter' => 'yii\validators\FilterValidator', 'filter' => 'yii\validators\FilterValidator',
'image' => 'yii\validators\ImageValidator',
'in' => 'yii\validators\RangeValidator', 'in' => 'yii\validators\RangeValidator',
'integer' => [ 'integer' => [
'class' => 'yii\validators\NumberValidator', 'class' => 'yii\validators\NumberValidator',
......
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