Yii2 FileInput - 试图获取非对象的属性 [英] Yii2 FileInput - Trying to get property of non object
问题描述
我正在使用 Yii2 和 Kartik 的 FileInput 扩展，并且我已经成功地使文件上传工作(仅单个上传).我现在的问题是，如果我没有选择任何文件(它应该是可选的)，我会收到标题中的错误(附有日志).
在互联网上进行大量搜索后，我认为这与数组有关，但我不知道如何解决这个问题，尤其是即使日志指向确切的行！
这是我的日志，
这是我的模型，
namespace app\models;使用 Yii；类 FormMovement 扩展 \yii\db\ActiveRecord{公共$文件；公共静态函数 tableName(){返回 'form_movement';}公共函数规则(){返回 [[['fm_date_received', 'fm_form_name', 'fm_from', 'fm_ptj'], 'required'],[['form_id'], '整数'],[['fm_date_received', 'fm_date_action1', 'fm_date_action2','fm_upload'], 'safe'],[['fm_form_name', 'fm_note'], 'string', 'max' =>500],[['fm_from', 'fm_ptj', 'fm_action1', 'fm_action2'], 'string', 'max' =>100],[['文件']，'文件'，'skipOnEmpty' =>真，'扩展'=>'jpg，pdf，png，doc，docx，xls，xlsx，jpeg'，'maxFiles'=>3],];}我的控制器功能，日志显示在第75行，就是这个，
$model->fm_upload='uploads/'.$fileName.'.'.$model->file->extension;一直在修修补补，但没有成功.
公共函数 actionCreate(){$model = new FormMovement();if ($model->load(Yii::$app->request->post())) {//设置文件名$fileName = $model ->fm_form_name;//获取实例$model->file = UploadedFile :: getInstance($model, 'file');//设置db中的文件路径$model->fm_upload='uploads/'.$fileName.'.'.$model->file->extension;//保存文件到服务器目录$model->save();$model->file->saveAs('uploads/'.$fileName.'.'.$model->file->extension);返回 $this->redirect(['view', 'id' => $model->form_id]);} 别的 {返回 $this->render('create', ['模型' =>$模型，]);}}最后我的观点，
<?= Html::activeLabel($model, 'file[]', ['标签'=>'MUAT NAIK 失败','class'='col-sm-1 控制标签']) ?><div class="col-sm-8"><?= $form->field($model, 'file',['showLabels'=>false])->widget(FileInput::classname(), ['选项' =>['接受' =>'文件/*', '多个' =>'真的']，'插件选项'=>['showUpload' =>错误的，]]) ?>这部分应该重构:
//设置文件名$fileName = $model ->fm_form_name;//获取实例$model->file = UploadedFile :: getInstance($model, 'file');//设置db中的文件路径$model->fm_upload='uploads/'.$fileName.'.'.$model->file->extension;//保存文件到服务器目录$model->save();$model->file->saveAs('uploads/'.$fileName.'.'.$model->file->extension);像这样:
$model->file = UploadedFile::getInstance($model, 'file');$model->save();如果($模型->文件){$model->fm_upload = "上传/{$model->fm_form_name}.{$model->file->extension}";$model->file->saveAs("uploads/{$model->fm_form_name}.{$model->file->extension}");}另请注意，您根本不会在控制器中处理失败的验证.
为了进一步重构，这一行:
$model->file = UploadedFile::getInstance($model, 'file');可以移动到 beforeValidate() 事件处理程序.
这部分:
if ($model->file) {$model->fm_upload = "上传/{$model->fm_form_name}.{$model->file->extension}";$model->file->saveAs("uploads/{$model->fm_form_name}.{$model->file->extension}");}可以移动到 afterSave() 事件处理程序以保持您的控制器纤薄.
在 saveAs() 中最好使用别名，我在这个 答案.
i am using Yii2 and Kartik's FileInput extension and I have successfully get the file uploads working(only single upload). My problem now is that, I get the error as in the title(with logs attached) if I did not choose any files(It should be optional).
After much searching over the internet, I think it has to be something to do with array, but I am not sure how to fix that, especially even with the logs pointing to the exact line!
Here is my log,
Here is my model,
namespace app\models;
use Yii;
class FormMovement extends \yii\db\ActiveRecord
{
public $file;
public static function tableName()
{
return 'form_movement';
}
public function rules()
{
return [
[['fm_date_received', 'fm_form_name', 'fm_from', 'fm_ptj'], 'required'],
[['form_id'], 'integer'],
[['fm_date_received', 'fm_date_action1', 'fm_date_action2','fm_upload'], 'safe'],
[['fm_form_name', 'fm_note'], 'string', 'max' => 500],
[['fm_from', 'fm_ptj', 'fm_action1', 'fm_action2'], 'string', 'max' => 100],
[['file'], 'file', 'skipOnEmpty' => true, 'extensions'=>'jpg,pdf,png,doc,docx,xls,xlsx, jpeg', 'maxFiles' => 3],
];
}
My controller function, the log shows that it is at the line 75, which is this one,
$model->fm_upload='uploads/'.$fileName.'.'.$model->file->extension;
Been tinkering with it, but no success.
public function actionCreate()
{
$model = new FormMovement();
if ($model->load(Yii::$app->request->post())) {
//set the file name
$fileName = $model -> fm_form_name;
//get instance
$model->file = UploadedFile :: getInstance($model, 'file');
//set the file path in the db
$model->fm_upload='uploads/'.$fileName.'.'.$model->file->extension;
//save the file to the server directory
$model->save();
$model->file->saveAs('uploads/'.$fileName.'.'.$model->file->extension);
return $this->redirect(['view', 'id' => $model->form_id]);
} else {
return $this->render('create', [
'model' => $model,
]);
}
}
Finally my view,
<div class="form-group kv-fieldset-inline">
<?= Html::activeLabel($model, 'file[]', [
'label'=>'MUAT NAIK FAIL',
'class'=>'col-sm-1 control-label'
]) ?>
<div class="col-sm-8">
<?= $form->field($model, 'file',[
'showLabels'=>false
])->widget(FileInput::classname(), [
'options' => ['accept' => 'file/*', 'multiple' => 'true'],
'pluginOptions'=>[
'showUpload' => false,
]
]) ?>
</div>
</div>
This part should be refactored:
//set the file name
$fileName = $model -> fm_form_name;
//get instance
$model->file = UploadedFile :: getInstance($model, 'file');
//set the file path in the db
$model->fm_upload='uploads/'.$fileName.'.'.$model->file->extension;
//save the file to the server directory
$model->save();
$model->file->saveAs('uploads/'.$fileName.'.'.$model->file->extension);
like this:
$model->file = UploadedFile::getInstance($model, 'file');
$model->save();
if ($model->file) {
$model->fm_upload = "uploads/{$model->fm_form_name}.{$model->file->extension}";
$model->file->saveAs("uploads/{$model->fm_form_name}.{$model->file->extension}");
}
Also note that you don't handle failed validation in your controller at all.
For further refactoring, this line:
$model->file = UploadedFile::getInstance($model, 'file');
can be moved to beforeValidate() event handler.
This part:
if ($model->file) {
$model->fm_upload = "uploads/{$model->fm_form_name}.{$model->file->extension}";
$model->file->saveAs("uploads/{$model->fm_form_name}.{$model->file->extension}");
}
can be moved to afterSave() event handler to keep your controller slim.
In saveAs() it's better to use alias, I desribed it in this answer.
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