Recently i needed to save multiple entries for the same model and i thought saveAll should do the trick.
After trying some different approaches i found the right one. This approach can be used for both new entries and to update entries.

Controller

(/app/controller/tasks_controller.php)

New entry:

function add() {
	if (!empty($this->data)) {
		$this->Task->create();
		if ($this->Task->saveAll($this->data)) {
			$this->Session->setFlash('Tasks saved');
			$this->redirect(array('action'=>'index'), null, true);
		} else {
			$this->Session->setFlash('Tasks could not be saved');
			$this->redirect(array('action'=>'index'), null, true);
		}
	}		
}

Edit entry:

function edit($todo_id=null){
	if (!empty($this->data)) {
		if ($this->Task->saveAll($this->data['Task'])) {
			$this->Session->setFlash('Tasks saved');
			$this->redirect(array('action'=>'index'), null, true);
		} else {
			$this->Session->setFlash('Tasks could not be saved');
			$this->redirect(array('action'=>'index'), null, true);
		}
	} else {
		// Find ten tasks to edit
		$tasks = $this->Task->findAll(null, null, null, 10);
		$this->set('tasks', $tasks);
	}
}

View

For a new entry:

<?php echo $form->create('Task');?>
	<fieldset>
 		<legend><?php __('New Tasks');?></legend>
	<?php
		// Lets generate 10 task input fields
		for(i=0;i<10;i++){
			echo $form->input($i.'.name');
		}
	?>
	</fieldset>
<?php echo $form->end('Submit');?>

To edit entries:

<?php echo $form->create('Task', array('url'=>array('action'=>'edit')));?>
	<fieldset>
 		<legend><?php __('Edit Tasks');?></legend>
	<?php
	
		// Loop trough the ten tasks and create form fields. We need at least the ID to update a task.
		$count = 0;
		foreach($tasks as $task){	
		echo $form->input($count.'.id', array('value'=>$task['Task']['id']));
		echo $form->input($count.'.name', array('value'=>$task['Task']['name']));
		$count++;
	}
	
	?>
	</fieldset>
<?php echo $form->end('Submit');?>

How it works

It’s not much different from the previous saveAll parts, the only really big change is that the form field names are a bit different and you need to specify the right model/array to save in the controller ( the $this->Task->saveAll($this->data['Task']); part).

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