def _get_order_string_from_model(self, identifiers_prefix, identifiers, model, resource, request, order_fields_rfs):
"""
:param identifiers_prefix: because order strings are recursive if model relations property contains list of
identifiers that was used for recursive searching the order string.
:param identifiers: list of identifiers that conclusively identifies order string.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param order_fields_rfs: RFS of fields that is allowed to order.
:return: db order method string that is obtained from model fields or methods.
"""
current_identifier = identifiers[0]
identifiers_suffix = identifiers[1:]
if current_identifier not in order_fields_rfs:
raise OrderIdentifierError
model_field = get_field_or_none(model, current_identifier)
model_method = get_method_or_none(model, current_identifier)
if model_field and not identifiers_suffix and (not model_field.is_relation or model_field.related_model):
return LOOKUP_SEP.join(identifiers_prefix + identifiers)
elif model_field and model_field.is_relation and model_field.related_model:
next_model = model_field.related_model
next_resource = get_resource_or_none(request, next_model, getattr(resource, 'resource_typemapper'))
return self._get_order_string_recursive(
identifiers_prefix + [identifiers[0]], identifiers[1:],
next_model, next_resource, request, order_fields_rfs[current_identifier].subfieldset
)
elif model_method and not identifiers_suffix:
return self._get_order_string_from_method(
model_method, identifiers_prefix, identifiers, model, resource, request, order_fields_rfs
)
def _get_model_filter(self, identifiers_prefix, identifiers, model, resource, request, filters_fields_rfs):
"""
:param identifiers_prefix: because filters are recursive if model relations property contains list of
identifiers that was used for recursive searching the filter.
:param identifiers: list of identifiers that conclusively identifies the filter.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param filters_fields_rfs: RFS of fields that is allowed to filter.
:return: method returns filter from model fields or methods
"""
current_identifier = identifiers[0]
identifiers_suffix = identifiers[1:]
if current_identifier not in filters_fields_rfs:
raise FilterIdentifierError
suffix = LOOKUP_SEP.join(identifiers_suffix)
model_field = get_field_or_none(model, current_identifier)
model_method = get_method_or_none(model, current_identifier)
if model_field and model_field.filter and (not suffix or suffix in model_field.filter.get_suffixes()):
return model_field.filter(identifiers_prefix, [current_identifier], identifiers_suffix, field=model_field)
elif model_field and model_field.is_relation and model_field.related_model:
# recursive search for filter via related model fields
next_model = model_field.related_model
next_resource = get_resource_or_none(request, next_model, getattr(resource, 'resource_typemapper'))
return self._get_filter_recursive(
identifiers_prefix + [identifiers[0]], identifiers[1:], next_model, next_resource, request,
filters_fields_rfs[current_identifier].subfieldset
)
elif model_method:
return self._get_method_filter(model_method, identifiers_prefix, [current_identifier], identifiers_suffix,
model, resource, request, filters_fields_rfs)
def _get_resource_filter(self, identifiers_prefix, identifiers, model, resource, request, filters_fields_rfs):
"""
:param identifiers_prefix: because filters are recursive if model relations property contains list of
identifiers that was used for recursive searching the filter.
:param identifiers: list of identifiers that conclusively identifies the filter.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param filters_fields_rfs: RFS of fields that is allowed to filter.
:return: method returns filter that is obtained from resource and its methods.
"""
# Filter is obtained from resource filters dict
for i in range(1, len(identifiers) + 1):
# Because resource filters can contains filter key with __ we must try all combinations with suffixes
current_identifiers = identifiers[:i]
identifiers_string = LOOKUP_SEP.join(current_identifiers)
identifiers_suffix = identifiers[i:]
suffix_string = LOOKUP_SEP.join(identifiers_suffix)
if (resource and identifiers_string in resource.filters and
(not suffix_string or suffix_string in resource.filters[identifiers_string].get_suffixes())):
return resource.filters[identifiers_string](identifiers_prefix, current_identifiers, identifiers_suffix)
# Filter is obtained from resource methods
current_identifier = identifiers[0]
resource_method = get_method_or_none(resource, current_identifier)
if current_identifier in filters_fields_rfs and resource_method:
return self._get_method_filter(resource_method, identifiers_suffix, [current_identifier], identifiers[1:],
model, resource, request, filters_fields_rfs)
return None
def _get_sorter_from_model(self, identifiers_prefix, identifiers, direction, model, resource, request,
order_fields_rfs):
"""
:param identifiers_prefix: because order strings are recursive if model relations property contains list of
identifiers that was used for recursive searching the order string.
:param identifiers: list of identifiers that conclusively identifies order string.
:param direction: direction of ordering ASC or DESC.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param order_fields_rfs: RFS of fields that is allowed to order.
:return: db order method string that is obtained from model fields or methods.
"""
current_identifier = identifiers[0]
identifiers_suffix = identifiers[1:]
if current_identifier not in order_fields_rfs:
raise OrderIdentifierError
model_field = get_field_or_none(model, current_identifier)
model_method = get_method_or_none(model, current_identifier)
if model_field and not identifiers_suffix and (not model_field.is_relation or model_field.related_model):
return DefaultSorter(identifiers_prefix + identifiers, direction)
elif model_field and model_field.is_relation and model_field.related_model:
next_model = model_field.related_model
next_resource = get_resource_or_none(request, next_model, getattr(resource, 'resource_typemapper'))
return self._get_sorter_recursive(
identifiers_prefix + [identifiers[0]], identifiers[1:], direction,
next_model, next_resource, request, order_fields_rfs[current_identifier].subfieldset
)
elif model_method and not identifiers_suffix:
return self._get_sorter_from_method(
model_method, identifiers_prefix, identifiers, direction, model, resource, request, order_fields_rfs
)
def _get_order_string_from_resource(self, identifiers_prefix, identifiers, model, resource, request,
order_fields_rfs):
"""
:param identifiers_prefix: because order strings are recursive if model relations property contains list of
identifiers that was used for recursive searching the order string.
:param identifiers: list of identifiers that conclusively identifies order string.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param order_fields_rfs: RFS of fields that is allowed to order.
:return: db order method string that is obtained from resource object.
"""
full_identifiers_string = LOOKUP_SEP.join(identifiers)
resource_method = get_method_or_none(resource, full_identifiers_string)
if full_identifiers_string in order_fields_rfs and resource_method:
return self._get_order_string_from_method(resource_method, identifiers_prefix, identifiers, model,
resource, request, order_fields_rfs)
def _get_order_string_from_resource(self, identifiers_prefix, identifiers, model, resource, request,
order_fields_rfs):
"""
:param identifiers_prefix: because order strings are recursive if model relations property contains list of
identifiers that was used for recursive searching the order string.
:param identifiers: list of identifiers that conclusively identifies order string.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param order_fields_rfs: RFS of fields that is allowed to order.
:return: db order method string that is obtained from resource object.
"""
full_identifiers_string = LOOKUP_SEP.join(identifiers)
resource_method = get_method_or_none(resource, full_identifiers_string)
if full_identifiers_string in order_fields_rfs and resource_method:
return self._get_order_string_from_method(resource_method, identifiers_prefix, identifiers, model,
resource, request, order_fields_rfs)
def _get_model_filter(self, identifiers_prefix, identifiers, model,
resource, request, filters_fields_rfs):
"""
:param identifiers_prefix: because filters are recursive if model relations property contains list of
identifiers that was used for recursive searching the filter.
:param identifiers: list of identifiers that conclusively identifies the filter.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param filters_fields_rfs: RFS of fields that is allowed to filter.
:return: method returns filter from model fields or methods
"""
current_identifier = identifiers[0]
identifiers_suffix = identifiers[1:]
if current_identifier not in filters_fields_rfs:
raise FilterIdentifierError
suffix = LOOKUP_SEP.join(identifiers_suffix)
model_field = get_field_or_none(model, current_identifier)
model_method = get_method_or_none(model, current_identifier)
if model_field and model_field.filter and (
not suffix or suffix in model_field.filter.get_suffixes()):
return model_field.filter(identifiers_prefix, [current_identifier],
identifiers_suffix,
field=model_field)
elif model_field and model_field.is_relation and model_field.related_model:
# recursive search for filter via related model fields
next_model = model_field.related_model
next_resource = get_resource_or_none(
request, next_model, getattr(resource, 'resource_typemapper'))
return self._get_filter_recursive(
identifiers_prefix + [identifiers[0]], identifiers[1:],
next_model, next_resource, request,
filters_fields_rfs[current_identifier].subfieldset)
elif model_method:
return self._get_method_filter(model_method, identifiers_prefix,
[current_identifier],
identifiers_suffix, model, resource,
request, filters_fields_rfs)
def _get_resource_filter(self, identifiers_prefix, identifiers, model,
resource, request, filters_fields_rfs):
"""
:param identifiers_prefix: because filters are recursive if model relations property contains list of
identifiers that was used for recursive searching the filter.
:param identifiers: list of identifiers that conclusively identifies the filter.
:param model: django model class.
:param resource: resource object.
:param request: django HTTP request.
:param filters_fields_rfs: RFS of fields that is allowed to filter.
:return: method returns filter that is obtained from resource and its methods.
"""
# Filter is obtained from resource filters dict
for i in range(1, len(identifiers) + 1):
# Because resource filters can contains filter key with __ we must try all combinations with suffixes
current_identifiers = identifiers[:i]
identifiers_string = LOOKUP_SEP.join(current_identifiers)
identifiers_suffix = identifiers[i:]
suffix_string = LOOKUP_SEP.join(identifiers_suffix)
if (resource and identifiers_string in resource.filters and
(not suffix_string or suffix_string
in resource.filters[identifiers_string].get_suffixes())):
return resource.filters[identifiers_string](
identifiers_prefix, current_identifiers,
identifiers_suffix)
# Filter is obtained from resource methods
current_identifier = identifiers[0]
resource_method = get_method_or_none(resource, current_identifier)
if current_identifier in filters_fields_rfs and resource_method:
return self._get_method_filter(resource_method, identifiers_suffix,
[current_identifier],
identifiers[1:], model, resource,
request, filters_fields_rfs)
return None
