def get_range(offset=None, limit=None, limit_default=None, limit_max=None):
warnings.warn(
'rmr.views.Json.get_range() is deprecated and will be removed '
'in rmr-django 2.0, use rmr.utils.range.get_range() instead and/or '
'rmr.forms.OffsetLimit form to validate offset/limit request '
'params',
category=DeprecationWarning,
)
start = 0
stop = None
with contextlib.suppress(ValueError):
start = offset and int(offset) or start
if start < 0:
raise rmr.ClientError(
'Offset must be a positive number',
code='incorrect_offset',
)
limit = limit and int(limit) or limit_default
if limit is not None:
if limit <= 0:
raise rmr.ClientError(
'Limit must be a positive number',
code='incorrect_limit',
)
if limit_max and limit > limit_max:
raise rmr.ClientError(
'Maximum value of limit must be '
'less then or equal {}'.format(limit_max),
code='max_limit_exceeded',
)
stop = start + limit
elif limit_max:
raise rmr.ClientError(
'Limit must be provided',
code='limit_not_provided',
)
return start, stop
raise rmr.ClientError(
'Limit and offset must be a numbers if provided',
code='incorrect_limit_or_offset',
)
def _view(request: http.HttpRequest, *args, **kwargs):
form_get = get(request.GET)
form_post = post(request.POST, request.FILES)
if False in (form_get.is_valid(), form_post.is_valid()):
raise rmr.ClientError(
code='validation_error',
message=dict(form_post.errors, **form_get.errors),
)
request.GET = form_get.cleaned_data
request.POST = form_post.cleaned_data
return view(request, *args, **kwargs)