It would be helpful to have pluggable submission validators. Most useful would be to have validators that can validate and modify the entire submission, so this should most likely be done in the serializer's "validate" method.
Since a plugin manager already exists, making the submission validators part of the plugins would make sense. Initially, perhaps all available plugin validators would be run, but it may also make sense to be able to select on a core by core basis, or even by submission type.
It would be helpful to have pluggable submission validators. Most useful would be to have validators that can validate and modify the entire submission, so this should most likely be done in the serializer's "validate" method.
Since a plugin manager already exists, making the submission validators part of the plugins would make sense. Initially, perhaps all available plugin validators would be run, but it may also make sense to be able to select on a core by core basis, or even by submission type.