如何将文件上载到yii2中的目录?

时间:2022-08-22 08:05:23

i have an ActiveForm, and i want to add a field where the user can upload their photos. the problem is that i don't have an attribute for the image in the users table and every input field in 'yii' expects a model and an attribute as follows.

我有一个ActiveForm,我想添加一个用户可以上传照片的字段。问题是,我在users表中没有图像的属性,而且在“yii”中,每个输入字段都需要一个模型和属性,如下所示。

<?= $form->field($model, 'attribute')->input($platforms) ?>

i don't want to assign the image to any record nor i want to insert in in the database, i want it to be uploaded to a specific folder.

我不想把图像分配给任何记录,也不想在数据库中插入,我想把它上传到一个特定的文件夹。

i have also checked the library kartik wrote, but also requires an attribute field.

我还检查了kartik编写的库,但也需要一个属性字段。

6 个解决方案

#1


43  

Follow the official documentation

按照官方文档

https://github.com/yiisoft/yii2/blob/master/docs/guide/input-file-upload.md

https://github.com/yiisoft/yii2/blob/master/docs/guide/input-file-upload.md

Form Model

形式的模型

namespace app\models;

use yii\base\Model;
use yii\web\UploadedFile;

/**
* UploadForm is the model behind the upload form.
*/
class UploadForm extends Model
{
/**
 * @var UploadedFile|Null file attribute
 */
public $file;

/**
 * @return array the validation rules.
 */
public function rules()
{
    return [
        [['file'], 'file'],
    ];
}
}
?>

Form View

表格视图

<?php
use yii\widgets\ActiveForm;

$form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>

<?= $form->field($model, 'file')->fileInput() ?>

<button>Submit</button>

<?php ActiveForm::end(); ?>

Controller

控制器

Now create the controller that connects form and model together:

现在创建连接表单和模型的控制器:

<?php
namespace app\controllers;

use Yii;
use yii\web\Controller;
use app\models\UploadForm;
use yii\web\UploadedFile;

class SiteController extends Controller
{
public function actionUpload()
{
    $model = new UploadForm();

    if (Yii::$app->request->isPost) {
        $model->file = UploadedFile::getInstance($model, 'file');

        if ($model->validate()) {                
            $model->file->saveAs('uploads/' . $model->file->baseName . '.' . $model->file->extension);
        }
    }

    return $this->render('upload', ['model' => $model]);
}
}
?>

Instead of model->load(...) we are using UploadedFile::getInstance(...). [[\yii\web\UploadedFile|UploadedFile]] does not run the model validation. It only provides information about the uploaded file. Therefore, you need to run validation manually via $model->validate(). This triggers the [[yii\validators\FileValidator|FileValidator]] that expects a file:

我们使用的不是model->load(…),而是UploadedFile: getInstance(…)。[[[\yii\web\UploadedFile|UploadedFile]]]不运行模型验证。它只提供有关上传文件的信息。因此,您需要通过$model->validate()手动运行验证。这触发了[[yii\validator \FileValidator|FileValidator]],它期望文件:

 $file instanceof UploadedFile || $file->error == UPLOAD_ERR_NO_FILE //in code framework

If validation is successful, then we're saving the file:

如果验证成功,那么我们保存文件:

 $model->file->saveAs('uploads/' . $model->file->baseName . '.' . $model->file->extension);

If you're using "basic" application template then folder uploads should be created under web.

如果您正在使用“基本”应用程序模板,那么应该在web下创建文件夹上传。

That's it. Load the page and try uploading. Uplaods should end up in basic/web/uploads.

就是这样。加载页面并尝试上传。空斑应该以基本/web/上传结束。

#2


14  

in your view

在你的观点

use kartik\widgets\ActiveForm;
use kartik\widgets\FileInput;

$form = ActiveForm::begin(['options' => ['enctype'=>'multipart/form-data']]); //important
echo FileInput::widget([
                    'name' => 'filename',
                    'showUpload' => false,
                    'buttonOptions' => ['label' => false],
                    'removeOptions' => ['label' => false],
                    'groupOptions' => ['class' => 'input-group-lg']
                ]);
echo Html::submitButton('Submit', ['class'=>'btn btn-primary']);
ActiveForm::end();

in your controller

在你的控制器

$file = \yii\web\UploadedFile::getInstanceByName('filename');
$file->saveAs('/your/directory/'.$file->name);

#3


6  

Create a read only attribute for your model like public $imageand proceed like

为您的模型创建一个只读属性,如public $imageand继续

 <?= $form->field($model, 'image')->fileInput() ?>

#4


2  

I really like Yii2 Dropzone.

我非常喜欢Yii2 Dropzone。

Installation:

安装:

composer require --prefer-dist perminder-klair/yii2-dropzone "dev-master"

Usage:

用法:

<?php 
    echo \kato\DropZone::widget([
       'options' => [
           'url'=> Url::to(['resource-manager/upload']),
           'paramName'=>'image',
           'maxFilesize' => '10',
       ],
       'clientEvents' => [
           'complete' => "function(file){console.log(file)}",
           'removedfile' => "function(file){alert(file.name + ' is removed')}"
       ],
   ]);

   ?>

Controller:

控制器:

public function actionUpload(){

        $model = new ResourceManager();
        $uploadPath = Yii::getAlias('@root') .'/uploads/';

        if (isset($_FILES['image'])) {
            $file = \yii\web\UploadedFile::getInstanceByName('image');
          $original_name = $file->baseName;  
          $newFileName = \Yii::$app->security
                            ->generateRandomString().'.'.$file->extension;
           // you can write save code here before uploading.
            if ($file->saveAs($uploadPath . '/' . $newFileName)) {
                $model->image = $newFileName;
                $model->original_name = $original_name;
                if($model->save(false)){
                    echo \yii\helpers\Json::encode($file);
                }
                else{
                    echo \yii\helpers\Json::encode($model->getErrors());
                }

            }
        }
        else {
            return $this->render('upload', [
                'model' => $model,
            ]);
        }

        return false;
    }

#5


0  

give this code after your uploaded code

上传代码后请给出此代码

  //save the path in DB..
                $model->file = 'uploads/'.$imageName.'.'.$model->file->extension;
                $model->save();

#6


0  

If you have more than one file while uploading you must use foreach for that. And you should actual name of file in a column in table and a encrypted value of that name has to be stored to avoid duplicated in the directory.. Something like this..

如果你上传的文件不止一个,你必须使用foreach。你应该在表中的列中实际的文件名,并且必须存储该名称的加密值,以避免在目录中重复。是这样的. .

$userdocs->document_name = UploadedFile::getInstances($userdocs, 'document_name');

foreach ($userdocs->document_name as $key => $file) {
  $img_name = Yii::$app->security->generateRandomString();
  $file->saveAs('user/business_files/' . $img_name . '.' . $file->extension);
  $images = $img_name . '.' . $file->extension;
  $userdocs->actual_name = $file->name;
  $userdocs->user_id = $user->id;
  $userdocs->document_name = $images;
  $userdocs->save(false);
  $userdocs = new UserDocs();
}

Here a random string is generated and it will be assign with the name of the document, and it will be stored in the table. The UserDocs is the model name.

这里将生成一个随机字符串,并使用文档的名称进行分配,并将其存储在表中。UserDocs是模型名。

#1


43  

Follow the official documentation

按照官方文档

https://github.com/yiisoft/yii2/blob/master/docs/guide/input-file-upload.md

https://github.com/yiisoft/yii2/blob/master/docs/guide/input-file-upload.md

Form Model

形式的模型

namespace app\models;

use yii\base\Model;
use yii\web\UploadedFile;

/**
* UploadForm is the model behind the upload form.
*/
class UploadForm extends Model
{
/**
 * @var UploadedFile|Null file attribute
 */
public $file;

/**
 * @return array the validation rules.
 */
public function rules()
{
    return [
        [['file'], 'file'],
    ];
}
}
?>

Form View

表格视图

<?php
use yii\widgets\ActiveForm;

$form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>

<?= $form->field($model, 'file')->fileInput() ?>

<button>Submit</button>

<?php ActiveForm::end(); ?>

Controller

控制器

Now create the controller that connects form and model together:

现在创建连接表单和模型的控制器:

<?php
namespace app\controllers;

use Yii;
use yii\web\Controller;
use app\models\UploadForm;
use yii\web\UploadedFile;

class SiteController extends Controller
{
public function actionUpload()
{
    $model = new UploadForm();

    if (Yii::$app->request->isPost) {
        $model->file = UploadedFile::getInstance($model, 'file');

        if ($model->validate()) {                
            $model->file->saveAs('uploads/' . $model->file->baseName . '.' . $model->file->extension);
        }
    }

    return $this->render('upload', ['model' => $model]);
}
}
?>

Instead of model->load(...) we are using UploadedFile::getInstance(...). [[\yii\web\UploadedFile|UploadedFile]] does not run the model validation. It only provides information about the uploaded file. Therefore, you need to run validation manually via $model->validate(). This triggers the [[yii\validators\FileValidator|FileValidator]] that expects a file:

我们使用的不是model->load(…),而是UploadedFile: getInstance(…)。[[[\yii\web\UploadedFile|UploadedFile]]]不运行模型验证。它只提供有关上传文件的信息。因此,您需要通过$model->validate()手动运行验证。这触发了[[yii\validator \FileValidator|FileValidator]],它期望文件:

 $file instanceof UploadedFile || $file->error == UPLOAD_ERR_NO_FILE //in code framework

If validation is successful, then we're saving the file:

如果验证成功,那么我们保存文件:

 $model->file->saveAs('uploads/' . $model->file->baseName . '.' . $model->file->extension);

If you're using "basic" application template then folder uploads should be created under web.

如果您正在使用“基本”应用程序模板,那么应该在web下创建文件夹上传。

That's it. Load the page and try uploading. Uplaods should end up in basic/web/uploads.

就是这样。加载页面并尝试上传。空斑应该以基本/web/上传结束。

#2


14  

in your view

在你的观点

use kartik\widgets\ActiveForm;
use kartik\widgets\FileInput;

$form = ActiveForm::begin(['options' => ['enctype'=>'multipart/form-data']]); //important
echo FileInput::widget([
                    'name' => 'filename',
                    'showUpload' => false,
                    'buttonOptions' => ['label' => false],
                    'removeOptions' => ['label' => false],
                    'groupOptions' => ['class' => 'input-group-lg']
                ]);
echo Html::submitButton('Submit', ['class'=>'btn btn-primary']);
ActiveForm::end();

in your controller

在你的控制器

$file = \yii\web\UploadedFile::getInstanceByName('filename');
$file->saveAs('/your/directory/'.$file->name);

#3


6  

Create a read only attribute for your model like public $imageand proceed like

为您的模型创建一个只读属性,如public $imageand继续

 <?= $form->field($model, 'image')->fileInput() ?>

#4


2  

I really like Yii2 Dropzone.

我非常喜欢Yii2 Dropzone。

Installation:

安装:

composer require --prefer-dist perminder-klair/yii2-dropzone "dev-master"

Usage:

用法:

<?php 
    echo \kato\DropZone::widget([
       'options' => [
           'url'=> Url::to(['resource-manager/upload']),
           'paramName'=>'image',
           'maxFilesize' => '10',
       ],
       'clientEvents' => [
           'complete' => "function(file){console.log(file)}",
           'removedfile' => "function(file){alert(file.name + ' is removed')}"
       ],
   ]);

   ?>

Controller:

控制器:

public function actionUpload(){

        $model = new ResourceManager();
        $uploadPath = Yii::getAlias('@root') .'/uploads/';

        if (isset($_FILES['image'])) {
            $file = \yii\web\UploadedFile::getInstanceByName('image');
          $original_name = $file->baseName;  
          $newFileName = \Yii::$app->security
                            ->generateRandomString().'.'.$file->extension;
           // you can write save code here before uploading.
            if ($file->saveAs($uploadPath . '/' . $newFileName)) {
                $model->image = $newFileName;
                $model->original_name = $original_name;
                if($model->save(false)){
                    echo \yii\helpers\Json::encode($file);
                }
                else{
                    echo \yii\helpers\Json::encode($model->getErrors());
                }

            }
        }
        else {
            return $this->render('upload', [
                'model' => $model,
            ]);
        }

        return false;
    }

#5


0  

give this code after your uploaded code

上传代码后请给出此代码

  //save the path in DB..
                $model->file = 'uploads/'.$imageName.'.'.$model->file->extension;
                $model->save();

#6


0  

If you have more than one file while uploading you must use foreach for that. And you should actual name of file in a column in table and a encrypted value of that name has to be stored to avoid duplicated in the directory.. Something like this..

如果你上传的文件不止一个,你必须使用foreach。你应该在表中的列中实际的文件名,并且必须存储该名称的加密值,以避免在目录中重复。是这样的. .

$userdocs->document_name = UploadedFile::getInstances($userdocs, 'document_name');

foreach ($userdocs->document_name as $key => $file) {
  $img_name = Yii::$app->security->generateRandomString();
  $file->saveAs('user/business_files/' . $img_name . '.' . $file->extension);
  $images = $img_name . '.' . $file->extension;
  $userdocs->actual_name = $file->name;
  $userdocs->user_id = $user->id;
  $userdocs->document_name = $images;
  $userdocs->save(false);
  $userdocs = new UserDocs();
}

Here a random string is generated and it will be assign with the name of the document, and it will be stored in the table. The UserDocs is the model name.

这里将生成一个随机字符串,并使用文档的名称进行分配,并将其存储在表中。UserDocs是模型名。