Multiple file upload with Symfony2

Question

I\'m trying to upload multiple files via a form, but I can only upload one file at a time, the last one I mark in the browser. Is there a way to upload more images with Symf

Answer 1

All the suggestions I've found here are workarounds for the real situation.

In order to be able to have multiple attachments, you should use form collection.

Quote from the documentation:

In this entry, you'll learn how to create a form that embeds a collection of many other forms. This could be useful, for example, if you had a Task class and you wanted to edit/create/remove many Tag objects related to that Task, right inside the same form.

http://symfony.com/doc/2.0/cookbook/form/form_collections.html

Example case: You have a document, which form is specified by DocumentType. The document must have multiple attachments, which you can have by defining AttachmentType form and adding it as a collection to the DocumentType form.

Answer 2

Symfony introduced 'multiple' option to file field type in symfony 2.5

$builder->add('file', 'file', array('multiple' => TRUE));

Answer 3

use this methode :

$form = $this->createFormBuilder()
->add('attachments','file', array('required' => true,"attr" => array(
  "multiple" => "multiple",
  )))
->add('save', 'submit', array(
  'attr' => array('class' => 'btn btn-primary btn-block btn-lg'),
  'label' => 'save'
  ))
->getForm();

then you add [] to the name of your input via jQuery :

<input id="form_attachments" name="form[attachments]" required="required" multiple="multiple" type="file">

jQuery code :

 <script>
  $(document).ready(function() {
    $('#form_attachments').attr('name',$('#form_attachments').attr('name')+"[]");
  });
</script>

Answer 4

For sf > 2.2 : In you form type class, add this overrided method :

public function finishView(FormView $view, FormInterface $form, array $options) {
    $view->vars['form']->children['files']->vars['full_name'] .= '[]';
}

Answer 5

No extra classes needed (except the gallery_manger service but the issue you describe happens before...)

I don't really know what's wrong. Check for your template (maybe wrong enctype... or name attr missmatching)

first try to do a single file upload, check the documentation:

1. file Field Type
2. How to handle File Uploads with Doctrine

Once it works, you have to edit some lines.

1. add input file multiple attribute.
2. append [] at the end of the input file name attribute (mine is create...[] because my form class name is create, if your is createType it will be createType...[])
3. init $files as an array.

Copy/paste your code here.

Answer 6

What would happen if there would be some validation errors? Will Symfony Form repost multiple file upload field. Because I tried it and I think for this purpose you need to use collection of file fields. Than symfony form must render all fields have added before correctly.