yii2.0上传图片

Posted 2020-08-31 l-zl

model：

 1 use Yii;
 2 public $imageUpload;
 3 public function rules()
 4 {
 5     return [
 6 　　　　[[\'imageUpload\'], \'image\', \'extensions\' => \'png, jpg, jpeg\', \'minWidth\' => 200, \'maxWidth\' => 1000, \'minHeight\' => 200, \'maxHeight\' => 1000, \'maxSize\' => 1024 * 1024],
 7  　　];
 8 }
 9 
10 public function attributeLabels()
11 {
12     return [
13 　　　　\'imageUpload\' => \'头像\',
14 　　];
15 }
16 /**
17  * 获取头像url地址
18  * @return 头像的url地址
19  */
20 public function getPortraitUrl()
21 {
22     return self::getAvatarUrlById($this->id);
23 }
24 
25 /**
26  * 获取头像存放路径
27  * @return 头像的存放路径
28  */
29 public static function getAvatarPathById($companyId)
30 {
31     $string = str_pad($companyId, 6, \'0\', STR_PAD_LEFT);
32 　　//头像的存放路径
33     $path = \'company/\' . substr($string, 0, -4) . \'/\' . substr($string, -4, 2) . \'/\' . substr($string, -2, 2) . image_type_to_extension(IMAGETYPE_JPEG);;
34     return $path;
35 }
36 
37 /**
38  * 通过用户ID获取头像url地址
39  */
40 public static function getAvatarUrlById($companyId)
41 {
42     $path = self::getAvatarPathById($companyId);
43     $file = Yii::getAlias(\'@uploadPath/\' . $path);
44     if (file_exists($file)) {
45         $makeTime = filemtime($file);
46         return Yii::getAlias(\'@uploadUrl/\' . $path) . \'?\' . $makeTime;
47     }
48     return Yii::getAlias(\'@resUrl/\' . self::DEFAULT_AVATAR);
49 }

 

控制器显示：

 1 use Yii;
 2 use app\\models\\Company;
 3 use yii\\helpers\\FileHelper;
 4 use yii\\web\\Controller;
 5 use yii\\web\\UploadedFile;
 6 //use  yii\\imageine\'Image;  //需要通过composer引入
 7 public function actionProfile()
 8 {
 9     $id = Yii::$app->session[\'companyId\'];//得到id
10     $model = Company::findOne($id);
11     $imageUpload = UploadedFile::getInstance($model, \'imageUpload\');//返回一个上传文件
12     if (Yii::$app->request->isPost && $model->load(Yii::$app->request->post())) {//判断是否post提交，加载数据
13         if ($imageUpload && $model->validate([\'imageUpload\'])) {//数据验证
14             $path =  Company::getAvatarPathById($id);//图片的路径别名
15             $avatarImage = Yii::getAlias(\'@uploadPath/\' . $path);//将路径别名转化为实际的路径
16             FileHelper::createDirectory(dirname(Yii::getAlias($avatarImage)));//创建目录
17             $imageUpload->saveAs(Yii::getAlias($avatarImage));//保存图片
18 　//　　　Image::thumbnail($avatarImage, 300, 300)->save($avatarImage);  //将保存的图片改成300*300像素再保存到网页上
19         }
20         if($model->save()) {
21             Yii::$app->session[\'companyName\'] = $model->name;
22         }
23     }
24     return$this->render(\'profile\', [\'model\' => $model]);
25 }

 

视图显示：

 1 use app\\models\\Company;
 2 <?php $form = ActiveForm::begin([     /*表单开始*/
 3     \'options\' => [\'enctype\' => \'multipart/form-data\']   //文件上传必须加
 4 ]); ?>
 5 <?= $form->field($model, \'imageUpload\')->fileInput([\'maxlength\' => true])->hint(\'建议上传尺寸:100*100--300*300\') ?>
 6 <?= $form->field($model, \'imageUpload\', [\'inputTemplate\'=>\'<img src="\'.\\app\\models\\Company::getAvatarUrlById($model->id).\'" width="100px" height="100px" />\'])->staticControl() ?>
 7 <div class="form-group">
 8     <div class="col-sm-offset-2 col-sm-6">
 9         <?= html::submitButton(\'修改\', [\'class\' => \'btn btn-green btn-sm\']) ?>    <!-- 显示提交按钮 -->
10     </div>
11 </div>
12 <?php ActiveForm::end(); ?>   <!-- 表单结束 -->

结果显示：
网页显示

本地显示 （当前ID.jpeg）