yii中使用activeFileField实现图片的上传

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在YII中要实现图片的上传，可以使用activeFileField

1、在VIEW中：

enctype这句话一定要加上去。

<?php $form=$this->beginWidget('CActiveForm', array('id'=>'tbl-goods-form',// Please note: When you enable ajax validation, make sure the corresponding// controller action is handling ajax validation correctly.// There is a call to performAjaxValidation() commented in generated controller code.// See class documentation of CActiveForm for details on this.'enableAjaxValidation'=>false,        //要实现图片的上传与修改，enctype这句话一定要加上去。        'htmlOptions'=>array('enctype'=>'multipart/form-data'))); ?>

2、在VIEW中：

<div class="row"><?php echo $form->labelEx($model,'goods_small_pic'); ?><?php //echo $form->textField($model,'goods_small_pic',array('size'=>60,'maxlength'=>255)); ?><?php echo CHtml::activeFileField($model,'goods_small_pic'); ?>                <?php echo $form->error($model,'goods_small_pic'); ?>                <!--预览图，并且设置一个隐藏域，用来暂存修改前的URL信息-->                <?php echo '<img src="'.$model->goods_small_pic.'"    width="100px"/>'; ?>                <?php if(!$model->isNewRecord){?>                <input type="hidden" name="temp_img2" id="hiddenField"    value="<?php echo $model->goods_small_pic;?>"/>                <?php }?></div>

3、模型中：

public function rules(){// NOTE: you should only define rules for those attributes that// will receive user inputs.return array(array('is_sale, is_delete, is_best, is_new, is_hot, is_promote', 'numerical', 'integerOnly'=>true),array('cat_id, click_count, brand_id, goods_number, market_price, shop_price, promote_price', 'length', 'max'=>8),array('goods_sn', 'length', 'max'=>16),array('goods_name', 'length', 'max'=>32),//array('goods_desc, goods_small_pic, goods_big_pic', 'length', 'max'=>255),                        array('goods_desc','length','max'=>255),                        //要实现图片的上传与修改，要将保存图片URL地址的字段改为file，如下所示。                        array('goods_small_pic','file','types'=>'jpg,gif,png','on'=>'insert'),                        array('goods_big_pic','file','types'=>'jpg,gif,png','on'=>'insert'),                    array('promote_start_date, promote_end_date, add_time', 'safe'),// The following rule is used by search().// @todo Please remove those attributes that should not be searched.array('goods_id, cat_id, goods_sn, goods_name, click_count, brand_id, goods_number, market_price, shop_price, promote_price, promote_start_date, promote_end_date, goods_desc, goods_small_pic, goods_big_pic, is_sale, is_delete, is_best, is_new, is_hot, is_promote, add_time', 'safe', 'on'=>'search'),);}

4、控制器中：

public function actionCreate(){$model=new TblGoods;// Uncomment the following line if AJAX validation is needed// $this->performAjaxValidation($model);                //使用下拉菜单，实现添加产品或修改产品时，可以从下拉列表选择产品类别:以下为第1步                //在Goods控制器下实例化category对象，并执行SQL语句，取得所有数据。                $category =  TblCategory::model()->findAll();if(isset($_POST['TblGoods'])){$model->attributes=$_POST['TblGoods'];                                                //实现文件,图片的上传                        $model->goods_small_pic=  CUploadedFile::getInstance($model, goods_small_pic);                        $model->goods_big_pic=  CUploadedFile::getInstance($model, goods_big_pic);                        if($model->goods_small_pic){                            $newimg='goods_small_pic_'.time().'_'.rand(1,9999).".".$model->goods_small_pic->extensionName;                            //$newimg="abc.jpg";                            $model->goods_small_pic->saveAs('assets/uploads/tblgoods/'.$newimg);                            $model->goods_small_pic='assets/uploads/tblgoods/'.$newimg;                        }                        if($model->goods_big_pic){                            $newimg2='goods_big_pic_'.time().'_'.rand(1,9999).".".$model->goods_big_pic->extensionName;                            //$newimg2="abcd.jpg";                            $model->goods_big_pic->saveAs('assets/uploads/tblgoods/'.$newimg2);                            $model->goods_big_pic='assets/uploads/tblgoods/'.$newimg2;                        }                        if($model->save())$this->redirect(array('view','id'=>$model->goods_id));}$this->render('create',array('model'=>$model,                        //使用下拉菜单，实现添加产品或修改产品时，可以从下拉列表选择产品类别:以下为第2步                        //在Goods控制器下create将上面得到的数组，分配到create这个VIEW页面。                        'category'=>$category));}/** * Updates a particular model. * If update is successful, the browser will be redirected to the 'view' page. * @param integer $id the ID of the model to be updated */public function actionUpdate($id){$model=$this->loadModel($id);// Uncomment the following line if AJAX validation is needed// $this->performAjaxValidation($model);                //                 //使用下拉菜单，实现添加产品或修改产品时，可以从下拉列表选择产品类别:以下为第1步                //在Goods控制器下实例化category对象，并执行SQL语句，取得所有数据。                $category =  TblCategory::model()->findAll();if(isset($_POST['TblGoods'])){$model->attributes=$_POST['TblGoods'];                                                //实现文件,图片的上传                        $model->goods_small_pic=  CUploadedFile::getInstance($model, goods_small_pic);                        $model->goods_big_pic=  CUploadedFile::getInstance($model, goods_big_pic);                        if($model->goods_small_pic){                            $newimg='goods_small_pic_'.time().'_'.rand(1,9999).".".$model->goods_small_pic->extensionName;                            //$newimg="abc.jpg";                            $model->goods_small_pic->saveAs('assets/uploads/tblgoods/'.$newimg);                            $model->goods_small_pic='assets/uploads/tblgoods/'.$newimg;                        }else{                            $model->goods_small_pic=$_POST['temp_img1'];                        }                        if($model->goods_big_pic){                            $newimg2='goods_big_pic_'.time().'_'.rand(1,9999).".".$model->goods_big_pic->extensionName;                            //$newimg2="abcd.jpg";                            $model->goods_big_pic->saveAs('assets/uploads/tblgoods/'.$newimg2);                            $model->goods_big_pic='assets/uploads/tblgoods/'.$newimg2;                        }else{                            $model->goods_big_pic=$_POST['temp_img2'];                        }                        if($model->save())$this->redirect(array('view','id'=>$model->goods_id));}$this->render('update',array('model'=>$model,                        //使用下拉菜单，实现添加产品或修改产品时，可以从下拉列表选择产品类别:以下为第2步                        //在Goods控制器下create将上面得到的数组，分配到create这个VIEW页面。                        'category'=>$category));}

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