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）
