[TYPO3-mvc] Configuration of checkbox groups

[Robert Böttner]

Hi,

I´m wondering how I have to configure object attributes that get collected with checkbox groups. My frontend is based on Ext JS so I don´t use Fluid in these parts of the application.

'countries' is of type string in my Model and a varchar field in the DB.

This is the part of TCA:
'countries' => array(
	'exclude' => 0,
	'label'   => 'LLL:EXT:my_ext/Resources/Private/Language/locallang_db.xml:tx_myext_domain_model_app.countries', 
	'config'  => array(
		'type' => 'input',
		'size' => 30,
		'eval' => 'trim'
	)
),

And this is how I name the fields in the form:
{boxLabel: 'Australia', name: 'tx_myext_pi2[app][countries][]', inputValue: '1' },
{boxLabel: 'Austria', name: 'tx_myext_pi2[app][countries][]', inputValue: '2'},
{boxLabel: 'Belgium', name: 'tx_myext_pi2[app][countries][]', inputValue: '3'},
...

Currently nothing gets persisted for these attributes. Can anyone enlighten me?

Cheers
Robert.