Question

我需要允许用户上传图片，我希望将该图片保存在目录（webroot / uploads）中，并且我希望数据库存储该文件的路径图片。

我收到此错误：Warning (2): mb_strlen() expects parameter 1 to be string, array given [CORE\src\Validation\Validation.php, line 742]

adaugare.ctp

<div class="masiniSh form large-9 medium-8 columns content">
    <?= $this->Form->create($masiniSh, array('enctype'=>'multipart/form-data')) ?>
    <fieldset>
        <legend><?= __('Adauga anunt') ?></legend>
        <?php
            echo $this->Form->control('marca', array('required'=>false));
            echo $this->Form->control('denumire', array('required'=>false));
            echo $this->Form->control('versiune', array('required'=>false));
            echo $this->Form->control('combustibil', array('required'=>false));
            echo $this->Form->control('cilindree', array('required'=>false));
            echo $this->Form->control('putere_maxima', array('required'=>false));
            echo $this->Form->control('consum_urban', array('required'=>false));
            echo $this->Form->control('consum_extraurban', array('required'=>false));
            echo $this->Form->control('consum_mixt', array('required'=>false));
            echo $this->Form->control('tractiune', array('required'=>false));
            echo $this->Form->control('cutie_viteze', array('required'=>false));
            echo $this->Form->control('numar_usi', array('required'=>false));
            echo $this->Form->control('pret', array('required'=>false));
            echo $this->Form->control('km', array('required'=>false));
            echo $this->Form->control('an_fabricatie', array('required'=>false));
            echo $this->Form->control('tel', array('required'=>false));
            echo $this->Form->control('nume_proprietar', array('required'=>false));
            echo $this->Form->control('locatie', array('required'=>false));
            echo $this->Form->control('imagine', array('type'=>'file'));
        ?>
    </fieldset>
    <?= $this->Form->button(__('Submit')) ?>
    <?= $this->Form->end() ?>
</div>

MasiniShController.php

public function adaugare()
{
    $masiniSh = $this->MasiniSh->newEntity();
    if ($this->request->is('post')) {
        $masiniSh = $this->MasiniSh->patchEntity($masiniSh, $this->request->getData());

        if ($this->MasiniSh->save($masiniSh)) {
            $this->Flash->success(__('The ad has been saved..'));

            return $this->redirect(['action' => 'index']);
        } else {
            $this->Flash->error(__('The ad could not be saved. Please, try again.'));
        }

        if (!empty($this->data)) {
            //Check if image has been uploaded
            if (!empty($this->data['MasiniSh']['imagine']['name'])) {
                $file = $this->data['MasiniSh']['imagine']; //put the data into a var for easy use

                $ext = substr(strtolower(strrchr($file['name'], '.')), 1); //get the extension
                $arr_ext = array('jpg', 'jpeg', 'png', 'gif'); //set allowed extensions

                //only process if the extension is valid
                if (in_array($ext, $arr_ext)) {
                    //do the actual uploading of the file. First arg is the tmp name, second arg is
                    //where we are putting it
                    move_uploaded_file($file['tmp_name'], WWW_ROOT . 'uploads/' . $file['name']);

                    //prepare the filename for database entry
                    $this->data['MasiniSh']['imagine'] = $file['name'];
                }
            }

            //now do the save
            $this->MasiniSh->save($this->data) ;
        }   

    }
    $this->set(compact('masiniSh'));

}

P.S。 imag字段在数据库中设置为varchar(255)

问题是当我点击提交按钮时出现错误。我发现，如果我对来自maxLength('imagine', 255)的{{1}}发表评论，则此错误会消失，但它会再次出现错误：提供的值无效。

Answer 1

看来你正在尝试将Cake 3.x代码与一些旧版本混合使用，也许你在网上发现了一些并试图整合它？下面的更新版本带有一些内联注释。请注意，它未经测试，但应该关闭！

public function adaugare()
{
    $masiniSh = $this->MasiniSh->newEntity();

    // This is the new way of checking for $this->data
    if ($this->request->is('post')) {
        // Get a copy of the posted data for easier use
        $data = $this->request->getData();

        //Check if image has been uploaded
        // Note: the array keys here may not be exactly right, use pr($data) to look at it and make any required corrections. I've made a guess that MasiniSh isn't needed now.
        // Note2: it would be a more "Cake" solution to move this if block to the beforeMarshal function of the MasiniSh table class
        if (!empty($data['imagine']['name'])) {
            $file = $data['imagine']; //put the data into a var for easy use

            $ext = substr(strtolower(strrchr($file['name'], '.')), 1); //get the extension
            $arr_ext = array('jpg', 'jpeg', 'png', 'gif'); //set allowed extensions

            //only process if the extension is valid
            if (in_array($ext, $arr_ext)) {
                //do the actual uploading of the file. First arg is the tmp name, second arg is
                //where we are putting it
                move_uploaded_file($file['tmp_name'], WWW_ROOT . 'uploads/' . $file['name']);

                //prepare the filename for database entry
                $data['imagine'] = $file['name'];
            } else {
                // You probably want to unset the imagine key from the data here, and maybe delete the temp file?
            }
        }

        //now update the entity and do the save
        $masiniSh = $this->MasiniSh->patchEntity($masiniSh, $data);

        if ($this->MasiniSh->save($masiniSh)) {
            $this->Flash->success(__('The ad has been saved..'));

            return $this->redirect(['action' => 'index']);
        } else {
            $this->Flash->error(__('The ad could not be saved. Please, try again.'));
        }
    }
    $this->set(compact('masiniSh'));

}

Answer 2

Greg Schmidt已经回答了这个问题，但我想补充一些建议。文件属于数据层，最好在Table / Entity类中使用它们。在我的应用程序中，我使用了一种从这个组件cakephp-upload component借来的技术。首先，您需要添加自定义数据库类型。就我而言，它被称为FileType。然后，您需要将此新类型映射到要存储文件名的字段。这些步骤将使您能够使用beforeSave方法中的数组来处理字段。它将使您的控制器代码更加清晰，因为您将上传逻辑移动到模型。我已经a Gist for you here了。我希望你能得到这个想法，它可以帮助你完成你的项目。

尝试在cakephp中上传图像并将路径保存在数据库中

2 个答案: