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Backend Development
There are a couple of interesting things happening with this block class. For starters,
we are extending a different block class, Mage_Adminhtml_Block_Template, and
implementing a new interface, Mage_Adminhtml_Block_Widget_Tab_Interface. This
is done in order to access all the features and functionalities of the Magento backend.
We are also setting the block template inside the construct function of our class; also
under the getCustomerId, we are making use of the Magento global variables to get
the current customer.
Our next step will be to create the corresponding template file for this block,
otherwise we would get an error on the block initialization.
1. Create a template file called main.phtml at the location app/code/design/
adminhtml/default/default/template/mdg/giftregistry/customer/.
2. Copy the following code into it:
Nothing here
For now, we are just adding placeholder content to the template so that we can
actually see our tabs in action; now, if we go to the customer section in the backend,
we should see that a new tab is available, and clicking on that tab will display our
placeholder content.
By now, we have modified the backend and added a Customers tab to the customer
section just by changing a configuration and adding some simple blocks and a
template file. But so far, this hasn't been particularly useful, so we need a way of
displaying all the customer gift registries under the Gift registry tab.
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