Dont run validates_schema if individual fields were invalid

I just discovered that validates_schema runs if individual fields have failed validation. I kinda expected otherwise.

I want a way to prevent validates_schema from being run if individual fields have failed validation. Please confirm if my way of comparing original and processed data is sufficient or that there is a simpler alternative.

@validates_schema(pass_original=True)
def validate_schema(self, data, original):
    # dont run below tests if validation on individual fields failed:
    if sorted(data.keys()) != sorted(original.keys()):
        return
    ...tests that presume individual fields are valid

[sloria]

The skip_on_field_errors parameter has been added to validates_schema in 2.4.0.

[DamianHeard]

Perhaps an alternative would be to properly expose the errors that have been captured during unmarshalling. At the moment you have to go through self._unmarshal.errors. Individual validate_schema methods would either check for errors before running of the decorator could be modified to automatically do this check if configured. Of course, I could be missing something and these errors might be already getting exposed at a more desirable location.