Default setter needs to know the field name

[pvanderlinden]

It would be very usefull to let the default setter know which field it is.
Use case:

• a filter can only have values which depends on the logged in user
• if the filter is missing it should default to all the values the user is allowed to pass in

Currently I work around this issue by having the default setter set it to '__all__' and then in the custom validator (which also validates the allowed values), and let it expand to actual default in self.document. Which might break in feature versions.

[marcpearson]

Since the field was mandatory in my custom _validate_type_string and _validate_type_date functions, i modify the validator class too. Please leave the field name in the parameters or set a way to get the current processed field name from the Validator class

[funkyfuture]

what about the following design: the callables' signatures are inspected before calling and provided with the parameters as needed. like pytest is injecting fixtures to test functionns.

[funkyfuture]

so, the idea of dependency injection that allows custom signatures is included in the roadmap for the next major release. it will take a while 'til the journey gets there, and this feature has a rather high potential to conflict with the desire to not break too much with a major release.