Caching/duplication when calling cmb2_metabox_form

Without actually having your code to see, I wager you’re needing to separate out the saved content by ID. For example, my_form_1, my_form_2, etc instead of just my_form. It’s not going to know it needs to go to the next set of items, and thus just return the first set it finds each time.

Hopefully that makes sense.

So, I’m defining the meta boxes for a particular CPT “test” as below.

$cmb = new_cmb2_box( array(
		"id"            => "test",
		"object_types"  => array("test"),
		"context"       => "normal",
		"priority"      => "high",
		"show_names"    => true, // Show field names on the left
	) );

On the front end, I’m iterating through a list of post IDs and extracting the form using the below code

$postIDs    = array(1, 2, 3);
$forms      = array();
foreach($postIDs as $postID){
    $form       = cmb2_metabox_form("test", $postID, array( "cmb_styles" => false, "form_format" => "", "echo" => ""));
    $forms[]    = $form;
}
print_r($forms);

The output array contains the form for postID 1 repeated 3 times. If I change the $postIDs array to (2, 3, 1) then the output is for postID 2 repeated 3 times.

Upon further testing and inspection, I believe it’s related to output buffering.

Specifically https://cmb2.io/api/source-function-cmb2_get_metabox_form.html#208 which gets reached as you progress through the form. It receives the right IDs and whatnot, but the ob_get_contents seems to returning the previous version and not the new one.

https://github.com/WebDevStudios/CMB2/issues/366

Thanks. I already raised an issue but came here in the hope that this was not a bug but a misunderstanding at my end.