Thanks for your reply.

Am sorry the code returned a blank page but when i remove this code
$container = $event->getContainerEntity();

The site will come up without any changes.

Make sure you have an event entity. Modify the code like this

$event = get_entity($event_guid);
if($event){
    $group = elgg_get_page_owner_entity();
    if (elgg_instanceof($group, 'group')) {
            YOUR_CODE_HERE
    }
} else {
    echo "no event found";
}    

Thanks for your contribution @Webgalli

I tried the code, yes i have the event entity,
but no changes took place. Still didn't display the group.

I don't know what must be wrong.

Any help please?

When adding a new input field to the blog form you will have to modify the blog edit form, the blog edit/save action and the blog view (or any views the data from the new field should show).

Done

I can't seem understand what that plugin does.

Anyway is like you don't understand what i want. Let me go straight to the point. I want to write http:// in a field so when a user wants to write a website address he/she has no need to write the http:// part.

e.g 

echo elgg_view('input/text', array(

  'name' => 'fieldname',

 'value' => 'http://',

));

@Matt Beckett Thank you very much for all the help you've given me. I appreciate. God bless. It worked just well.

Thanks once again

Please i need help