Adding identical consumer to 2 vehicles doesn't give an error

[andrealonzo]

I see that if you open 2 browsers and try to add the same consumer to 2 different vehicles, the consumer is added to the last vehicle, and removed from the 1st vehicle.

If the consumer is already on a vehicle, I think there should be an error when trying to add the consumer to another vehicle. What do you think @Em-Ant?

[Em-Ant]

true. Now the server handler removes the user inserted from all other vehicles. How do we know if the consumer is on a vehicle, on server ?

[andrealonzo]

Right now the server is removing the consumer from all vehicles before assigning. I think this query can be changed to check if the consumer is on any vehicle. If so, then return an error, otherwise continue with the update.

[Em-Ant]

Fixed with b7b3acc