Submitting form with "Enter" creates two records

[romaninsh]

After much testing, I noticed that the problem ONLY OCCURS if there is a single field in a form.

require 'vendor/autoload.php';

class Brand extends \atk4\data\Model {
    public $table = 'brand';

    function init()
    {
        parent::init();

        $this->addField('name');
        $this->addField('producer');   // comment this out and it stops working!
    }
}

$db = new \atk4\data\Persistence_SQL('mysql:host=127.0.0.1;dbname=warehouse;charset=utf8', 'root', 'root');

$g = $layout->add(['CRUD']);
$g->setModel(new Brand($db));

Two requests are sent to the backend:

and

With two fields only one request is sent:

MAYBE it's because of error 500 ?

[romaninsh]

Were able to find out exact cause.

[DarkSide666]

It's because of how browser treats 1 field forms nad HTML 2.0 specification.
Some browsers send submit when you press Enter in 1-field form, but some doesn't.

Some reading:
https://stackoverflow.com/a/1370314/1466341
https://stackoverflow.com/a/39603896/1466341
https://stackoverflow.com/a/17797230/1466341

[romaninsh]

this native submit should be disabled, because i think the second action is sent through correctly but the frontend simply ignore that.

[acicovic]

Hasn't this been solved?
If yes let's close the issue.

[DarkSide666]

This should be solved now by #379.
If problem will reappear then we can always create new github issue.