我正在构建一个YII Web应用程序，我正在尝试添加一个用户可以将照片上传到Web应用程序的功能。我已经搜索了有关如何执行此操作的教程或文档，但没有取得成功。
我被告知最简单的方法是将实际图像存储在平面文件中的服务器上，然后将路径存储到数据库中的图像中。我创建了名为Pictures的模型，其中包含以下属性：Title，url和＆amp; description。
以下是我的控制器中的创建操作：
public function actionCreate()
{
$model=new Pictures;
// Uncomment the following line if AJAX validation is needed
// $this->performAjaxValidation($model);
if(isset($_POST['Pictures']))
{
$model->attributes=$_POST['Pictures'];
$uploadedFile=CUploadedFile::getInstance($model,'url');
if($model->save())
$uploadedFile->saveAs(Yii::app()->basePath.'/granados/images/testimage.jpg');
$this->redirect(array('view','id'=>$model->id));
}
$this->render('create',array(
'model'=>$model,
));
}
这是我的表格：
<?php
/* @var $this PicturesController */
/* @var $model Pictures */
/* @var $form CActiveForm */
?>
<div class="form">
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'pictures-form',
'htmlOptions' => array(
'enctype' => 'multipart/form-data',
),
// 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,
)); ?>
<p class="note">Fields with <span class="required">*</span> are required.</p>
<?php echo $form->errorSummary($model); ?>
<div class="row">
<?php echo $form->labelEx($model,'title'); ?>
<?php echo $form->textField($model,'title',array('size'=>60,'maxlength'=>128)); ?>
<?php echo $form->error($model,'title'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'url'); ?>
<?php echo CHtml::activeFileField($model, 'url'); ?>
<?php echo $form->error($model,'url'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'description'); ?>
<?php echo $form->textArea($model,'description',array('rows'=>6, 'cols'=>50)); ?>
<?php echo $form->error($model,'description'); ?>
</div>
<div class="row buttons">
<?php echo CHtml::submitButton($model->isNewRecord ? 'Create' : 'Save'); ?>
</div>
<?php $this->endWidget(); ?>
</div><!-- form -->
这是我的模特：
<?php
/**
* This is the model class for table "{{pictures}}".
*
* The followings are the available columns in table '{{pictures}}':
* @property integer $id
* @property string $title
* @property string $url
* @property string $description
*/
class Pictures extends CActiveRecord
{
/**
* @return string the associated database table name
*/
public function tableName()
{
return '{{pictures}}';
}
/**
* @return array validation rules for model attributes.
*/
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('title, url', 'required'),
array('description', 'length', 'max'=>500),
array('url', 'file','types'=>'jpg, gif, png'),
// The following rule is used by search().
// @todo Please remove those attributes that should not be searched.
array('id, title, url, description', 'safe', 'on'=>'search'),
);
}
/**
* @return array relational rules.
*/
public function relations()
{
// NOTE: you may need to adjust the relation name and the related
// class name for the relations automatically generated below.
return array(
);
}
/**
* @return array customized attribute labels (name=>label)
*/
public function attributeLabels()
{
return array(
'id' => 'ID',
'title' => 'Title',
'url' => 'Url',
'description' => 'Description',
);
}
/**
* Retrieves a list of models based on the current search/filter conditions.
*
* Typical usecase:
* - Initialize the model fields with values from filter form.
* - Execute this method to get CActiveDataProvider instance which will filter
* models according to data in model fields.
* - Pass data provider to CGridView, CListView or any similar widget.
*
* @return CActiveDataProvider the data provider that can return the models
* based on the search/filter conditions.
*/
public function search()
{
// @todo Please modify the following code to remove attributes that should not be searched.
$criteria=new CDbCriteria;
$criteria->compare('id',$this->id);
$criteria->compare('title',$this->title,true);
$criteria->compare('url',$this->url,true);
$criteria->compare('description',$this->description,true);
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
));
}
/**
* Returns the static model of the specified AR class.
* Please note that you should have this exact method in all your CActiveRecord descendants!
* @param string $className active record class name.
* @return Pictures the static model class
*/
public static function model($className=__CLASS__)
{
return parent::model($className);
}
}
如果有人能指出我正确的方向，那就太好了。此时，我无法上传任何内容。当我提交新表单时，我收到404错误。
我现在完全迷失了，不知道该怎么做。以下是我到目前为止尝试过的链接：
http://stackoverflow.com/questions/3607200/file-upload-with-yiis-activeform
http://stackoverflow.com/questions/10348887/show-uploaded-image-yii
http://www.yiiframework.com/wiki/2/how-to-upload-a-file-using-a-model/
答案 0 :(得分：2)
试试这段代码。
public function actionCreate()
{
$model=new Pictures;
// Uncomment the following line if AJAX validation is needed
// $this->performAjaxValidation($model);
if(isset($_POST['Pictures']))
{
$model->attributes=$_POST['Pictures'];
$model->url = CUploadedFile::getInstance($model,'url');
if($model->save()) {
$fullImgSource = Yii::getPathOfAlias('webroot').'/granados/images/'.$model->url;
$model->url->saveAs($fullImgSource);
$this->redirect(array('view','id'=>$model->id));
}
}
$this->render('create',array(
'model'=>$model,
));
}
希望它会对你有所帮助。
由于
改进：if语句后缺少阻止。