Inserting value to database for custom field for Add Shop in Multistore

[Rohit Singhal]

Hello,

 

I want to add a custom field ie ZIp Code, when creating a shop using multistore. I am able to fetch zip codes from database when listing whole shops for a particular shop group by using following code

'zip' => array(
'title' => $this->l('Zip'),
'width' => 'auto',
'width' => 100,
  ),

in AdminShopController.php inside construct.

 

I am able to show textbox for when adding shop using following code

array(
 'type' => 'text',
 'label' => $this->l('Zip code:'),
 'desc' => $this->l('Enter zipcode of shop\'s physical store'),
 'name' => 'zip',
 'required' => true
)

 

What I am not able to do is insert value of zip code entered in add shop page to the database. Can anybody help me with it?