Modification of the Ajax component so that the user can return a JSON object.

[korenevskiy]

} elseif (\is_scalar($results)) {
            // Output string/ null
            $out = (string) $results;
} else {
            // Output array/ object
            $out = implode((array) $results);
}

/components/com_ajax/ajax.php

In the com_ajax component, the returned $results value is reduced to a string.
Can the user return a new JsonResponse type object.
But then this object will be converted to an array. and it will be glued together and cause an error.

Do I need to do PR or is this normal behavior? Should we make the code more flexible?

I suggest adding a check to see if the object is a JSON type or not.

} elseif (\is_scalar($results) ||  $results instanceof JsonResponse) {
            // Output string/ null
            $out = (string) $results;
} else {

components/com_ajax/ajax.php)

[Fedik]

Something like this is possible since 5.0,
you have to use url with &format=json.

And the event listener, kind of:

public function onAjaxFooBar(Joomla\CMS\Event\Plugin\AjaxEvent $event)
{
    $response = ['foo' => 'bar', 'bar' => 'foo'];

    $event->updateEventResult($response);
}

It set the array, which will be passed to JsonResponse within the com_ajax

[korenevskiy]

I know that you need to install the JSON format for this. But I needed to pass the format as DEBUG, but at the same time so that the format was in JSON.

The problem is that the object that generates the new JsonResponse with the second attribute accepts the error message and must also generate a list of other messages sent

JFactory::getApplication()->enqueueMessage('Error Message');

so that later the JSON contains the service information of error messages.
But the Ajax component disables these messages and passes NULL there.

So I need to pass JSON from component c with messages. but the component does not transmit them, but calls JSON to form itself.
If I generate JSON using a string manually, then this will accompany confusion and unnecessary magic.

thus, we need to achieve a JSON mode with error messages. And to do this, you need to add support for this feature, as I indicated in the main description.

[Fedik]

To collect messages you can add &ignoreMessages=0&format=json, then it will not ignore App messages.

[korenevskiy]

To collect messages you can add &ignoreMessages=0&format=json, then it will not ignore App messages.

Before creating a discussion here, I did as you wrote. But thanks for your PR. The tambourine is no longer needed.

[Fedik]

I have made PR for it, please test #43530