def paginate_queryset(self, queryset, request, view=None):
rql_ast = None
try:
rql_ast = request.rql_ast
except AttributeError:
query = get_query(request)
if query:
rql_ast = RQLParser.parse_query(query)
if rql_ast is not None:
try:
self._rql_limit, self._rql_offset = RQLLimitOffsetTransformer(
).transform(rql_ast)
except LarkError:
raise RQLFilterParsingError(
details={
'error': 'Limit and offset are set incorrectly.',
})
if self.get_limit() == 0:
self.count = self.get_count(queryset)
self.offset = 0
return []
return super(RQLLimitOffsetPagination,
self).paginate_queryset(queryset, request, view)
def get_query(cls, filter_instance, request, view):
query_string = cls.modify_initial_query(filter_instance, request,
get_query(request))
if not cls.is_old_syntax(filter_instance, request, query_string):
return query_string
return cls.get_rql_query(filter_instance, request, query_string)
def get_query(cls, filter_instance, request, view):
try:
query_string = cls.modify_initial_query(filter_instance, request,
get_query(request))
if not cls.is_old_syntax(filter_instance, request, query_string):
return query_string
else:
return cls.get_rql_query(filter_instance, request,
query_string)
except Exception:
raise RQLFilterParsingError(details={
'error': 'Bad filter query.',
})
def paginate_queryset(self, queryset, request, view=None):
rql_ast = None
try:
rql_ast = request.rql_ast
except AttributeError:
query = get_query(request)
if query:
rql_ast = RQLParser.parse_query(query)
if rql_ast is not None:
try:
self._rql_limit, self._rql_offset = RQLLimitOffsetTransformer(
).transform(rql_ast)
except LarkError:
raise RQLFilterParsingError(
details={
'error': 'Limit and offset are set incorrectly.',
})
self.limit = self.get_limit(request)
if self.limit == 0:
self.count = self.get_count(queryset)
self.offset = 0
return []
elif self.limit is None:
return None
self.count = self.get_count(queryset)
self.offset = self.get_offset(request)
self.request = request
if self.count > self.limit and self.template is not None:
self.display_page_controls = True
if self.count == 0 or self.offset > self.count:
return []
if self.limit + self.offset > self.count:
self.limit = self.count - self.offset
return list(queryset[self.offset:self.offset + self.limit])
def get_query(cls, filter_instance, request, view):
return get_query(request)
