This is what I do. I have a Serializer-level validator that checks the
validity of a number of fields. If they a missing or incorrect I want to
display a specific error message. Which basically looks like this.
{
'errors': {
'__all__': ['missing_security_fields'],
},
'errors:context': {
'__all__': {
'missing_security_fields': ['pow_1', 'pow_2', 'ticket'],
},
},
}
This is how it looks in (simplified) code:
class SecurityFieldsValidator(object):
def __call__(self, value):
missing_fields = self.get_missing_fields(value)
if missing_fields:
errors = {
'__all__': ['missing_security_fields'],
}
context = {
'__all__': {
'missing_security_fields': missing_fields,
},
}
raise ValidationError({'errors': errors, 'errors:context':
context})
But at some point in a call stack this structure stumbles upon
as_serializer_error() function (get_validation_error_detail() in older
versions) which wraps every item inside my dictionary in a list. What I
would like to do is to override this function so that it doesn't do it (at
least not for this specific format). But since it is not a method of
Serializer class (BTW why?) and there seems to be no setting that could
override this function, I don't see how I could change its behavior. One
workaround I see is when this function is done with its job, walk over my
dict and unwrap every item from its list, which looks like a complete waste
of CPU. Another option is to override run_validation() method of my
serializer which also doesn't seem nice because other than this problem,
I'm completely OK with how it works and I don't want to copy its code into
my project just to change a call of one function.
Did anyone try to implement their own error format and how one could
circumvent this rather annoying and seemingly hardcoded behavior?
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