Should be something like:
PHP callback used to compose input name from model instance.
If not set the model class name will be used. If class name is namespaced '\' will be replaced by '_'.
You can setup this field intoducing your logic of the input name creation.
For example:
&lt;code&gt;
...
&lt;/code&gt;

@var callback PHP callback used to compose input name from model instance. 
@see nameForModel()