Yii1.1.16 images cannot be modified

I have an article with images, but I found that the image cannot be obtained after modification. This is Example. php is the model file {code ...} this is ExampleController. PHP file {code ...} this is view File _ form. php {code ...} the problem is that the file I created is edited...

I have an article with images, but I found that the image cannot be obtained after modification.
This is Example. php. It is a model file.

/** * This is the model class for table "example". * * The followings are the available columns in table 'example': * @property integer $id * @property string $img * @property string $title * @property string $url * @property integer $state * @property string $detail */public function rules()    {        // NOTE: you should only define rules for those attributes that        // will receive user inputs.        return array(            array('img, title, state', 'required'),            array('state', 'numerical', 'integerOnly'=>true),            array('title, url', 'length', 'max'=>150),            array('img', 'file', 'allowEmpty'=>true, 'types'=>'bmp,jpg,png,gif'),            array('detail', 'safe'),            // The following rule is used by search().            // @todo Please remove those attributes that should not be searched.            array('id, img, title, url, state, detail', 'safe', 'on'=>'search'),        );    }

This is the ExampleController. php file.

    public function actionUpdate($id){                $model= Example::model()->findByPk($id);            if($model==null){                $this->redirect(array('index'));            }else{                $oldPic = $model->img;                if(isset($_POST['Example'])){                    $model->attributes=$_POST['Example'];                                        $model->img = $oldPic;                    $fileupload = CUploadedFile::getInstance($model, 'img');                    if($fileupload != null){                        $filename = 'images/'.time().'.'.$fileupload->extensionName;                        if($fileupload->saveAs($filename)){                            $model->img = $filename;                            if(file_exists($oldPic))unlink($oldPic);                        }                    }                                        if($model->save()){                        $this->redirect(array('index'));                    }else{                        $this->render('update',array(                        'model'=>$model,                    ));                    }                }else{                    $this->render('update',array(                        'model'=>$model,                    ));                }            }    }

This is view File _ form. php.

  BeginWidget ('cactiveform', array ('id' => 'example-form', // Please note: When you enable ajax validation, make sure the corresponding // controller action is handling ajax validation correctly. // There is a call to invoke majaxvalidation () commented in generated controller code. // See class documentation of CActiveForm for details on this. 'enablesajaxvalidation '=> false, 'htmlopexception' => array ('enct Ype '=> 'multipart/form-data');?>
 LabelEx ($ model, 'img ');?> $ Model-> img);?> Recommended image size: 500x600 IsNewRecord) {echo '';} else {?>
Img;?> ">  Error ($ model, 'img ');?>

The problem is that the file I created is lost when I want to edit content other than the image.

This is the image I created successfully.

I want to edit

I modified the title.

Then save the result. The problem occurs.

Where is the problem? I just got in touch with yii. My yii version is 1.1.16. Please correct it !!

Reply content:

I have an article with images, but I found that the image cannot be obtained after modification.
This is Example. php. It is a model file.

/** * This is the model class for table "example". * * The followings are the available columns in table 'example': * @property integer $id * @property string $img * @property string $title * @property string $url * @property integer $state * @property string $detail */public function rules()    {        // NOTE: you should only define rules for those attributes that        // will receive user inputs.        return array(            array('img, title, state', 'required'),            array('state', 'numerical', 'integerOnly'=>true),            array('title, url', 'length', 'max'=>150),            array('img', 'file', 'allowEmpty'=>true, 'types'=>'bmp,jpg,png,gif'),            array('detail', 'safe'),            // The following rule is used by search().            // @todo Please remove those attributes that should not be searched.            array('id, img, title, url, state, detail', 'safe', 'on'=>'search'),        );    }

This is the ExampleController. php file.

    public function actionUpdate($id){                $model= Example::model()->findByPk($id);            if($model==null){                $this->redirect(array('index'));            }else{                $oldPic = $model->img;                if(isset($_POST['Example'])){                    $model->attributes=$_POST['Example'];                                        $model->img = $oldPic;                    $fileupload = CUploadedFile::getInstance($model, 'img');                    if($fileupload != null){                        $filename = 'images/'.time().'.'.$fileupload->extensionName;                        if($fileupload->saveAs($filename)){                            $model->img = $filename;                            if(file_exists($oldPic))unlink($oldPic);                        }                    }                                        if($model->save()){                        $this->redirect(array('index'));                    }else{                        $this->render('update',array(                        'model'=>$model,                    ));                    }                }else{                    $this->render('update',array(                        'model'=>$model,                    ));                }            }    }

This is view File _ form. php.

  BeginWidget ('cactiveform', array ('id' => 'example-form', // Please note: When you enable ajax validation, make sure the corresponding // controller action is handling ajax validation correctly. // There is a call to invoke majaxvalidation () commented in generated controller code. // See class documentation of CActiveForm for details on this. 'enablesajaxvalidation '=> false, 'htmlopexception' => array ('enct Ype '=> 'multipart/form-data');?>
 LabelEx ($ model, 'img ');?> $ Model-> img);?> Recommended image size: 500x600 IsNewRecord) {echo '';} else {?>
Img;?> ">  Error ($ model, 'img ');?>

The problem is that the file I created is lost when I want to edit content other than the image.

This is the image I created successfully.

I want to edit

I modified the title.

Then save the result. The problem occurs.

Where is the problem? I just got in touch with yii. My yii version is 1.1.16. Please correct it !!

I haven't used 1, but I flipped through the Code. Your problem lies in rules.

Array ('img ', 'file', 'allowempty' => true, 'types' => 'bmp, jpg, png, gif '),

CFileValidatorIf the verification field fails, the field is setnull

/**     * Raises an error to inform end user about blank attribute.     * Sets the owner attribute to null to prevent setting arbitrary values.     * @param CModel $object the object being validated     * @param string $attribute the attribute being validated     */    protected function emptyAttribute($object, $attribute)    {        if($this->safe)             $object->$attribute=null;        if(!$this->allowEmpty)        {            $message=$this->message!==null?$this->message : Yii::t('yii','{attribute} cannot be blank.');            $this->addError($object,$attribute,$message);        }    }