yii框架图片上传

落日映苍穹つ 2022-09-22 12:57 187阅读 0赞

1.在数据库中建立一张表（upload）

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2.运用gii生成model层，底下呢是我自己运用gii根据数据库中的表进行建立model层的，upload.php如下：

<?php
    namespace app\models;
    use yii\web\UploadedFile;
    use Yii;
    /**
     * This is the model class for table "upload".
     *
     * @property integer $u_id
     * @property string $u_name
     * @property string $u_pwd
     * @property string $u_img
     */
    class Upload extends \yii\db\ActiveRecord
    {
        /**
         * @inheritdoc
         */
        public static function tableName()
        {
            return 'upload';
        }
        /**
         * @inheritdoc
         */
        public function rules()
        {
            return [
                [['u_name', 'u_pwd', 'u_img'], 'string', 'max' => 255]
            ];
        }
        /**
         * @inheritdoc
         */
        public function attributeLabels()
        {
            return [
                'u_id' => 'U ID',
                'u_name' => 'U Name',
                'u_pwd' => 'U Pwd',
                'u_img' => 'U Img',
            ];
        }
         public function upload(){
            return $this->u_img->saveAs('upload/' . $this->u_img->baseName . '.' . $this->u_img->extension);
    }
    }

3.建立uploadControler.php,在没有post的接值的时候，进入views/upload/entry.php进行显示上传页面，点击submit进入跳转，跳转进图adds方法里，进行各种判断。不要着急请往下看。

![Center 1][]

<?php
    namespace app\controllers;
    
    use Yii;
    use yii\filters\AccessControl;
    use yii\web\Controller;
    use yii\filters\VerbFilter;
    use app\models\LoginForm;
    use app\models\ContactForm;
    use yii\web\UploadedFile;
    use app\models\Upload;
    class UploadController extends Controller
    {
    	public function actionIndex(){
    		$model = new Upload();
            if ($model->load(Yii::$app->request->post()) && $model->validate()) {
                return $this->render('entry-confirm', ['model' => $model]);
            } else {
                return $this->render('entry', ['model' => $model]);
            }
    	}
    	public function actionAdds()
    	{
    		$model = new Upload();
    		$request = Yii::$app->request;
    		$post=$request->post('Upload');
    		$u_name = $post['u_name'];
    		$u_pwd = $post['u_pwd'];
    		//在浏览器输出的值是 yii\web\UploadedFile Object ( [name] => 2.jpg [tempName] => C:\Windows\php3986.tmp
    		// [type] => image/jpeg [size] => 216848 [error] => 0 ) 
    		 $arr =  $model->u_img = UploadedFile::getInstance($model,'u_img');
    		  if ($model->upload()) {
                    $u_img = $arr->name;
                     $connection = \Yii::$app->db;
                $result=$connection->createCommand()->insert('upload', [
                    'u_name' => $u_name,
                    'u_pwd' => $u_pwd,
                     'u_img' =>$u_img,
                ])->execute();
                if($result)
                {
                  echo "添加成功";	
                }
                else
                {
                	echo "添加失败";
                }
                }
    	}
    }
    ?>

4.进入views/upload/entry.php建立entry.php，代码如下：

<?php
    use yii\helpers\Html;
    use yii\widgets\ActiveForm;
    ?>
    <?php $form = ActiveForm::begin([
        'action' => ['upload/adds'],
        'method'=>'post',
        'options' => ['enctype' => 'multipart/form-data']
    ]); ?>
        <?= $form->field($model, 'u_name') ?>
        <?= $form->field($model, 'u_pwd') ?>
        <?=$form->field($model, 'u_img')->fileInput(['multiple'=>'multiple']);?>
        <div class="form-group">
            <?= Html::submitButton('Submit', ['class' => 'btn btn-primary']) ?>
        </div>
    <?php ActiveForm::end(); ?>

[Center]: /images/20220721/05567896c91c4e21a7806ae0693c2797.png
[Center 1]: /images/20220721/53390cea2a9e4e10bd4f2d4c7fafd6b7.png