Yii2 save image to database as base64 - php

Question

I am trying to save image as a base64 into database. But when I submit form I am getting the image NULL. I couldn't understand what's wrong.
VIEW:
<div class="content">
<?php $form = ActiveForm::begin([
'id' => 'products-add-form',
'action' => ['products/product-add-form'],
'method' => 'post',
'options' => [
'class' => 'products-tbl-style',
'enctype' => 'multipart/form-data',
]
]); ?>
<?= $form->field($model, 'productName'); ?>
<?= $form->field($model, 'cost'); ?>
<?= $form->field($model, 'available')->dropDownList(['Y' => 'Yes', 'N' => 'No']); ?>
<?= $form->field($model, 'image')->fileInput(['class'=>'btn btn-primary']); ?>
<?= Html::submitButton('Save', ['class'=>'btn btn-success products-save-btn']); ?>
<?php ActiveForm::end(); ?>
</div>
Controller:
if($model->load(Yii::$app->request->post())){
$file = UploadedFile::getInstance($model,'image');
var_dump($file->name);
var_dump($file);
var_dump($_FILES);
}
Model:
public function rules()
{
return [
[['productName', 'cost', 'available', 'image'], 'required'],
[['cost'], 'number'],
[['available'], 'string', 'max' => 1],
[['image'], 'string'],
[['productName'], 'string', 'max' => 100]
];
}
Here my JQuery code, I am submitting the form data via ajax, does it cause a problem?
JS:
$("form#products-add-form").on('beforeSubmit', function(e){
var form = $(this);
$.post(
form.attr('action'),
form.serialize()
)
.done(function(result){
if(result == 1){
form.trigger("reset");
$.pjax.reload({container:'#products-table'});
$.notify({
icon: "pe-7s-check",
message: "New product is added"
},{
type: type[2],
timer: 10,
placement: {
from: 'top',
align: 'right'
}
});
}
else {
alert(result);
}
}).fail(function(){
console.log("server error");
});
return false;
});

Answer 1

To send files via AJAX you shoud use FormData. To construct a FormData object that contains the data from an existing <form>, specify that form element when creating the FormData object:
$("form#products-add-form").on('beforeSubmit', function(e){
$.post(
form.attr('action'),
new FormData(this) /* this is a form object */
)
/* your other code here */
});
UPD: As TS mentioned it should be processData set to false. It's impossible to set it for $.post, so we need to use $.ajax

Answer 2

I have tried following :
$.ajax( {
url: 'http://host.com/action/',
type: 'POST',
data: new FormData( this ),
processData: false,
contentType: false
} );
e.preventDefault();
And now it's working, as #SiZE wrote, we need to send file input with FormData() via ajax.

Answer 3

You can try to use FileInput widget it work's perfectly.