File upload problem with cakePHP

Question

I'm trying to upload a file with cakePHP. This is the view:

echo $form->create(null, array('action' => 'upload', 'type' => 'file')); echo $form->file('img'); echo $form->submit('Enviar Imagem'); echo $form->end();

And this is the error I'm getting:

Warning (2): Invalid argument supplied for foreach() [CORE/cake/dispatcher.php, line 314]

Edit: cakePHP's debug tells me that these are the lines of code where the problem happens:

foreach ($_FILES['data'] as $key => $data) { foreach ($data as $model => $fields) { foreach ($fields as $field => $value) {

And this is the call stack:

Dispatcher::parseParams() - CORE/cake/dispatcher.php, line 314 Dispatcher::dispatch() - CORE/cake/dispatcher.php, line 118 [main] - APP/webroot/index.php, line 88

My upload function is currently empty. What is happening?

looks like you explicitly need at $model there. try associating it with a model. — helloandre
– helloandre, Commented Aug 11, 2009 at 2:48

deceze · Accepted Answer · 2009-08-11 02:59:56Z

2

It seems the Dispatcher expects model names to be present when checking uploaded data. I don't know if there's a good reason for that or if it's just an oversight. Anyway, just use a made up model name, it doesn't matter. It will satisfy the Dispatcher by creating a data structure it expects.

echo $form->create('File', array( 'url' => array('controller' => 'myController', 'action' => 'upload'), 'type' => 'file' ));

edited Aug 11, 2009 at 2:59

answered Aug 8, 2009 at 1:55

deceze♦

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2 Comments

Rafael Almeida Over a year ago

Tried to add the controller explicitly, since this form has no associated model. But the problem remains the very same. I changed the debug level to 3 and it seems that the aforementioned foreach is dealing with data from file fields. I will update the question with more information.

deceze Over a year ago

It seems that you can create forms without models in general, but the dispatcher happens to expect a model name for when checking file fields. Seems like an internal inconsistency. It doesn't matter, just add any made up model name.

lukaszkorecki · Accepted Answer · 2009-08-21 09:48:37Z

When uploading files cake nukes $_POST and puts everything into

$this->params['form']

array. do a var_dump on $this->params in your upload view/controller and it should be there

Aziz · Accepted Answer · 2009-09-11 12:42:55Z

/app/views/images/upload.ctp

echo $form->create('Image', array('action' => 'upload', 'type' => 'file')); echo $form->file('img'); echo $form->submit('Enviar Imagem'); echo $form->end();

/app/controllers/images_controller.php

function upload(){ if(!empty($this->data)){ pr($this->data); } }

You'll find a lot of interesting :-)

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