Thanks for this. I think that using template is one very good approach. The question is how to do this in easy way for the developer. I will think about this. If you have ideas will be glad to hear.
The .id is not needed, but you will have datepicker every time click in this field, instead that you select another. If you have only one field to search this is ok, but it will make some confusions if you serarch on more than one field.
The beforeInitData is the right place for this. The only additional parameter that you should set is:
recreateForm : true;
This recreates the form every time.
Another possible solution is to use beforeShowForm event where you can show and hide some columns according to condition. Every column in the form (label + input field)
