ID handling the path URI

[fleischr]

Passing along this info that was a little hard to come by on including keys/ids in the URI template. Figured it might be nice to make a PR to improve the overall example and save people time trying to find it elsewhere.

I recently discovered you can process keys passed in the URI (ex: SalesOrder/40001 reading the the SO with ID 40001. This can be done while attaching the root handler

lo_router->attach( iv_template = '/SalesOrder/{ID}' iv_handler_class = 'ZCL_SALESORDERHANDLER' ).

In the handler class itself you would read the ID as follows

DATA(lt_uriattributes) = mo_request->get_uri_attributes( ).
READ TABLE lt_uriattributes WITH KEY name = 'ID' ASSIGNING FIELD-SYMBOL(<fs_salesorderid>).

In this example <fs_salesorderid>-value would then contain the passed ID value.

You can include regex in iv_template as well to enforce some character restrictions/validations.