An alert should say to user that the link he is following is not valid or no longer available.
Additional information or points to watch out for
An use case for this are links to time limited objects. For instance, at Neuchâtel we have a layer for traffic disruptions that only shows current or future disruptions. If some user clicks on a link for a disruption in the past, nothing will be shown to the user.
Who requested this new feature?
SITN
Is your feature request related to a problem?
Yes.
WFS permalink works great when all parameters are valid:
https://sitn.ne.ch/theme/cadastre?wfs_layer=parcelles&wfs_egrid=CH627997991205
But if one of the parameters is not valid, user will not have feedback that something is wrong:
https://sitn.ne.ch/theme/cadastre?wfs_layer=parcelles&wfs_egrid=CH999999999999
Describe the solution you'd like
An alert should say to user that the link he is following is not valid or no longer available.
Additional information or points to watch out for
An use case for this are links to time limited objects. For instance, at Neuchâtel we have a layer for traffic disruptions that only shows current or future disruptions. If some user clicks on a link for a disruption in the past, nothing will be shown to the user.