Image upload resulting in empty $_FILES array in magento 2

Question

In my custom module I'm trying to upload an image via my save controller, I added the form in my block with this code:

protected function _prepareForm()
{
 $model = $this->_coreRegistry->registry('homepagecontent_blocks');
 $form = $this->_formFactory->create();
 $form->setHtmlIdPrefix('content_');
 $form->setFieldNameSuffix('content');
 $fieldset = $form->addFieldset(
 'base_fieldset',
 ['legend' => __('General')]
 );
 $fieldset->addField(
 'image',
 'image',
 array(
 'name' => 'image',
 'label' => __('Image'),
 'title' => __('Image')
 )
 );

When I var_dump my $_POST value, this is displayed:

array (size=3)
'form_key' => string 'ri7aWhZX3L56e10f' (length=16)
'content' => 
array (size=7)
 'css_grid_column_from' => string '1' (length=1)
 'css_grid_column_to' => string '2' (length=1)
 'css_grid_row_from' => string '4' (length=1)
 'css_grid_row_to' => string '1' (length=1)
 'status' => string '1' (length=1)
 'link' => string 'asfasf' (length=6)
 'text' => string 'hdghgf' (length=6)
'image' => string 'imagename.jpeg' (length=15)

However my $_FILES variable is empty. Any idea what's wrong?

Answer 1

you need multipart/form-data enctype in your form in order to process image file, try to replace this code :

$form = $this->_formFactory->create();

with this one :

$form = $this->_formFactory->create(
[
'data' => [
 'id' => 'id_form',
 'method' => 'post',
 'enctype' => 'multipart/form-data'
 ]
 ]
);

hope this help

• mrfizh: glad to hear that, please mark this answer as acceptance answer to help others which have same case in the future :)