Datamanager 2 Schema class.

This class encapsulates Datamanager Schemas. It contains all information required to construct the types and widgets of a given data schema. The base class constructs out of a Datamanager 2 Schema definition, you need to use the appropriate subclass to handle them dynamically.

Schema Definition

Storage When using the Midgard storage backend, it is possible to define a callback class to be called that will then save the object. The class is defined as follows. Please note that if the classname follows the midcom hierarchy, it may be loaded automatically.

The class must satisfy the following interfaces:

class midcom_admin_parameters_callback {
     // params:
     // name: the name of the field
     // data: the data that comes from the type defined.
     // storage: a reference to the datamanager's storageclass.
     function on_load_data($name,&$storage);
     function on_store_data($name, $data,&$storage);
}

What the functions should return depends on the datatype they return to.

The callback may be defined in the schema like this:

'fields' => Array
(
     'parameters' => Array
      (
          'title' => 'url name',
          'storage' => Array
           (
                  'location' => 'object',
                  'callback' => 'midcom_admin_parameters_callbacks_storage',
           ),
           'type' => ..,
           'widget' => ..
      ),

Important It is only possible to define one storage callback per schema! If you want more than one, encapsulate this in your class.