def error(self, status_code, code, msg):
data = {
'code': code if code is not None else '',
'message': msg if msg is not None else errors.message(code)
}
return http.HttpResponse(json.dumps(data),
status=status_code,
content_type='application/json')
def post(self, request, *args, **kwargs):
# Only accept JSON
if request.META['CONTENT_TYPE'] != 'application/json':
return self.bad_request(
msg="Requests must have CONTENT_TYPE 'application/json'")
try:
payload = json.loads(request.body)
except ValueError:
return self.bad_request(msg="JSON payload could not be decoded")
try:
self.validate_payload(payload)
except InvalidPayload as e:
return self.bad_request(msg=str(e))
except ValidationError as e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
# We can still get a ValidationError even if the payload itself is
# valid.
try:
return self.valid_payload(payload)
except ValidationError as e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
def post(self, request, *args, **kwargs):
# Only accept JSON
if request.META['CONTENT_TYPE'] != 'application/json':
return self.bad_request(
msg="Requests must have CONTENT_TYPE 'application/json'")
try:
payload = json.loads(request.body)
except ValueError:
return self.bad_request(
msg="JSON payload could not be decoded")
try:
self.validate_payload(payload)
except InvalidPayload as e:
return self.bad_request(msg=str(e))
except ValidationError as e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
# We can still get a ValidationError even if the payload itself is
# valid.
try:
return self.valid_payload(payload)
except ValidationError as e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
class JSONView(generic.View):
required_keys = ()
optional_keys = ()
# Error handlers
def forbidden(self, code=None, msg=None):
# Forbidden by business logic
return self.error(403, code, msg)
def bad_request(self, code=None, msg=None):
# Bad syntax (eg missing keys)
return self.error(400, code, msg)
def error(self, status_code, code, msg):
data = {
'code': code if code is not None else '',
'message': msg if msg is not None else errors.message(code)
}
return http.HttpResponse(json.dumps(data),
status=status_code,
content_type='application/json')
# Success handlers
def created(self, url, data):
response = http.HttpResponse(json.dumps(data),
content_type='application/json',
status=201)
response['Location'] = url
return response
def ok(self, data):
return http.HttpResponse(json.dumps(data),
content_type='application/json')
def post(self, request, *args, **kwargs):
# Only accept JSON
if request.META['CONTENT_TYPE'] != 'application/json':
return self.bad_request(
msg="Requests must have CONTENT_TYPE 'application/json'")
try:
payload = json.loads(request.body)
except ValueError:
return self.bad_request(msg="JSON payload could not be decoded")
try:
self.validate_payload(payload)
except InvalidPayload, e:
return self.bad_request(msg=str(e))
except ValidationError, e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
try:
payload = json.loads(request.body)
except ValueError:
return self.bad_request(msg="JSON payload could not be decoded")
try:
self.validate_payload(payload)
except InvalidPayload, e:
return self.bad_request(msg=str(e))
except ValidationError, e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
# We can still get a ValidationError even if the payload itself is
# valid.
try:
return self.valid_payload(payload)
except ValidationError, e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
def validate_payload(self, payload):
# We mimic Django's forms API by using dynamic dispatch to call clean_*
# methods, and use a single 'clean' method to validate relations
# between fields.
for key in self.required_keys:
if key not in payload:
raise InvalidPayload(
("Mandatory field '%s' is missing from JSON "
"payload") % key)
validator_method = 'clean_%s' % key
if hasattr(self, validator_method):
payload[key] = getattr(self, validator_method)(payload[key])
for key in self.optional_keys:
validator_method = 'clean_%s' % key
def error(self, status_code, code, msg):
data = {'code': code if code is not None else '',
'message': msg if msg is not None else errors.message(code)}
return http.HttpResponse(json.dumps(data),
status=status_code,
content_type='application/json')
payload = json.loads(request.raw_post_data)
except ValueError:
return self.bad_request(
msg="JSON payload could not be decoded")
try:
self.validate_payload(payload)
except InvalidPayload, e:
return self.bad_request(msg=str(e))
except ValidationError, e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
# We can still get a ValidationError even if the payload itself is
# valid.
try:
return self.valid_payload(payload)
except ValidationError, e:
return self.forbidden(code=e.code, msg=errors.message(e.code))
def validate_payload(self, payload):
# We mimic Django's forms API by using dynamic dispatch to call clean_*
# methods, and use a single 'clean' method to validate relations
# between fields.
for key in self.required_keys:
if key not in payload:
raise InvalidPayload((
"Mandatory field '%s' is missing from JSON "
"payload") % key)
validator_method = 'clean_%s' % key
if hasattr(self, validator_method):
payload[key] = getattr(self, validator_method)(payload[key])
for key in self.optional_keys:
validator_method = 'clean_%s' % key
