1
This:
(isset($values['element1']))
will always return TRUE, since the form element exists, and therefore a value is always passed to the submit hander, even when the value is empty.
You likely want this:
!empty($values['element1'])
1
After examining the ViewAjaxController.php ajaxView() function, I came up with the following solution, which seems functioning for me. I created an ajax endpoint which extends ViewAjaxController and sets the requested view and display in the Request object then calls the parent ajaxView() method.
1. Define the route
my_module.routing.yml
my_module....
1
To get a triggering element you must provide a unique '#name' for each button.
Additionally, you can specify parameters to identify the action and record
function example_form($form, &$form_state){
$form['groups'] = array(
'#tree' => TRUE,
);
foreach(array(5,4,8,10) AS $id){
$form['groups'][$id] = array(
'id' ...
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