def individual_relationship_response(self, related_collection_type, related_resource, included=[]):
response = dict()
response['links'] = {
'self': '{base_url}/{type}/{id}/relationships/{related_collection_type}/{related_resource}'.format(
base_url=base_url,
type=self.type,
id=self.id,
related_collection_type=related_collection_type,
related_resource=related_resource),
'related': '{base_url}/{type}/{id}/{related_collection_type}/{related_resource}'.format(
base_url=base_url,
type=self.type,
id=self.id,
related_collection_type=related_collection_type,
related_resource=related_resource)
}
# data
related_node_or_nodes = eval('self.{related_collection_type}.search(id=related_resource)'.format(related_collection_type=related_collection_type), )
if len(related_node_or_nodes) == 1:
the_node = related_node_or_nodes[0]
response['data'] = {'type': the_node.type, 'id': the_node.id}
response['included'] = [the_node.get_resource_object()] + the_node.get_included_from_list(included)
r = make_response(jsonify(response))
r.status_code = http_error_codes.OK
r.headers['Content-Type'] = CONTENT_TYPE
else:
response['data'] = None
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
return r
def delete_relationship(cls, id, related_collection_name, related_resource=None):
try:
this_resource = cls.nodes.get(id=id, active=True)
if not related_resource:
r = this_resource.delete_relationship_collection(related_collection_name)
else:
r = this_resource.delete_individual_relationship(related_collection_name, related_resource)
except DoesNotExist:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
return r
def get_relationship(cls, request_args, id, related_collection_name, related_resource=None):
try:
included = request_args.get('included').split(',')
except:
included = []
try:
offset = request_args.get('page[offset]', 0)
limit = request_args.get('page[limit]', 20)
this_resource = cls.nodes.get(id=id, active=True)
if not related_resource:
if request_args.get('included'):
r = application_codes.error_response([application_codes.PARAMETER_NOT_SUPPORTED_VIOLATION])
else:
r = this_resource.relationship_collection_response(related_collection_name, offset, limit)
else:
r = this_resource.individual_relationship_response(related_collection_name, related_resource, included)
except DoesNotExist:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
return r
def set_resource_inactive(cls, id):
try:
this_resource = cls.nodes.get(id=id, active=True)
this_resource.deactivate()
#this_resource.active = False
#this_resource.save()
r = make_response('')
r.headers['Content-Type'] = "application/vnd.api+json; charset=utf-8"
r.status_code = http_error_codes.NO_CONTENT
except DoesNotExist:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
return r
def get_resource_or_collection(cls, request_args, id=None):
if id:
try:
this_resource = cls.nodes.get(id=id, active=True)
try:
included = request_args.get('included').split(',')
except:
included = []
r = this_resource.individual_resource_response(included)
except DoesNotExist:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
else:
if request_args.get('included'):
r = application_codes.error_response([application_codes.PARAMETER_NOT_SUPPORTED_VIOLATION])
else:
r = cls.resource_collection_response(
request_args.get('page[offset]', 0),
request_args.get('page[limit]', 20)
)
return r
def set_individual_related_resource_inactive(self, related_collection_type, related_resource):
# data
related_node_or_nodes = eval('self.{related_collection_type}.search(id=related_resource)'.format(related_collection_type=related_collection_type), )
if len(related_node_or_nodes) == 1:
the_node = related_node_or_nodes[0]
the_node.deactivate()
r = make_response('')
r.status_code = http_error_codes.NO_CONTENT
r.headers['Content-Type'] = CONTENT_TYPE
else:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
return r
def set_related_resources_collection_inactive(self, related_collection_type):
try:
# data
relation_type = eval('self.{related_collection_type}.definition'.format(
related_collection_type=related_collection_type)).get('relation_type')
results, columns = self.cypher(
"START a=node({self}) MATCH a-[:{relation_type}]-(b) RETURN b".format(
self=self._id, relation_type=relation_type
)
)
related_node_or_nodes = [self.inflate(row[0]) for row in results]
for n in related_node_or_nodes:
n.deactivate()
r = make_response('')
r.status_code = http_error_codes.NO_CONTENT
r.headers['Content-Type'] = CONTENT_TYPE
except AttributeError:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
return r
def method_not_allowed(error):
"""Return an error response when requests supply an unsupported HTTP method"""
return application_codes.error_response([application_codes.METHOD_NOT_ALLOWED])
def not_found(error):
"""Return an error response for resources that don't exist"""
return application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
def method_not_allowed(error):
return application_codes.error_response([application_codes.METHOD_NOT_ALLOWED])
def not_found(error):
return application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
def update_resource(cls, request_json, id):
response = dict()
try:
this_resource = cls.nodes.get(id=id, active=True)
data = request_json['data']
if data['type'] != cls.type:
raise WrongTypeError('type must match the type of the resource being updated.')
attributes = data.get('attributes')
if attributes:
for key in attributes.keys():
eval('setattr(this_resource,{key}, attributes[{key}])'.format(key=repr(key)))
this_resource.save()
relationships = data.get('relationships')
if relationships:
for relation_name in relationships.keys():
relations = relationships.get(relation_name)
for related_resource in eval('this_resource.{relation_name}.all()'.format(relation_name=relation_name)):
eval('this_resource.{relation_name}.disconnect(related_resource)'.
format(relation_name=relation_name))
if relations:
relations = relations['data']
if isinstance(relations, list):
for relation in relations:
the_type = relation['type']
the_id = relation['id']
new_resources_relation = cls.nodes.get(id=the_id, active=True)
eval('this_resource.{relation_name}.connect(new_resources_relation)'.format(
relation_name=relation_name)
)
else:
relation = relations
the_type = relation['type']
the_id = relation['id']
new_resources_relation = cls.nodes.get(id=the_id, active=True)
eval('this_resource.{relation_name}.connect(new_resources_relation)'.format(
relation_name=relation_name)
)
this_resource.updated = datetime.now()
this_resource.save()
response['data'] = this_resource.get_resource_object()
response['links'] = {'self': this_resource.get_self_link()}
status_code = http_error_codes.OK
location = this_resource.get_self_link()
r = make_response(jsonify(response))
r.headers['Content-Type'] = "application/vnd.api+json; charset=utf-8"
if location and this_resource:
r.headers['Location'] = location
r.status_code = status_code
except UniqueProperty as e:
print str(e)
r = application_codes.error_response([application_codes.UNIQUE_KEY_VIOLATION])
except DoesNotExist:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
except WrongTypeError as e:
r = application_codes.error_response([application_codes.WRONG_TYPE_VIOLATION])
except KeyError as e:
r = application_codes.error_response([application_codes.BAD_FORMAT_VIOLATION])
return r
def create_resource(cls, request_json):
response = dict()
new_resource, location = None, None
try:
data = request_json['data']
if data['type'] != cls.type:
raise WrongTypeError('type must match the type of the resource being created.')
attributes = data.get('attributes')
if attributes:
new_resource = cls(**attributes)
new_resource.save()
relationships = data.get('relationships')
if relationships:
for relation_name in relationships.keys():
relations = relationships.get(relation_name)
if relations:
relations = relations['data']
if isinstance(relations, list):
for relation in relations:
the_type = relation['type']
the_id = relation['id']
new_resources_relation = cls.nodes.get(id=the_id, active=True)
eval('new_resource.{relation_name}.connect(new_resources_relation)'.format(
relation_name=relation_name)
)
new_resource.save()
else:
relation = relations
the_type = relation['type']
the_id = relation['id']
new_resources_relation = cls.nodes.get(id=the_id, active=True)
eval('new_resource.{relation_name}.connect(new_resources_relation)'.format(
relation_name=relation_name)
)
new_resource.save()
response['data'] = new_resource.get_resource_object()
response['links'] = {'self': new_resource.get_self_link()}
status_code = http_error_codes.CREATED
location = new_resource.get_self_link()
r = make_response(jsonify(response))
r.headers['Content-Type'] = "application/vnd.api+json; charset=utf-8"
if location and new_resource:
r.headers['Location'] = location
r.status_code = status_code
except UniqueProperty:
r = application_codes.error_response([application_codes.UNIQUE_KEY_VIOLATION])
try:
new_resource.delete()
except:
pass
except DoesNotExist:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
try:
new_resource.delete()
except:
pass
except WrongTypeError as e:
r = application_codes.error_response([application_codes.WRONG_TYPE_VIOLATION])
try:
new_resource.delete()
except:
pass
except KeyError as e:
r = application_codes.error_response([application_codes.BAD_FORMAT_VIOLATION])
try:
new_resource.delete()
except:
pass
return r
def related_resources_collection_response(self, related_collection_type, included, offset=0, limit=20):
try:
response = dict()
response['included'] = list()
total_length = eval('len(self.{related_collection_type})'.format(
related_collection_type=related_collection_type)
)
response['links'] = {
'self': '{base_url}/{type}/{id}/{related_collection_type}?page[offset]={offset}&page[limit]={limit}'.format(
base_url=base_url,
type=self.type,
id=self.id,
related_collection_type=related_collection_type,
offset=offset,
limit=limit
),
'first': '{base_url}/{type}/{id}/{related_collection_type}?page[offset]={offset}&page[limit]={limit}'.format(
base_url=base_url,
type=self.type,
id=self.id,
related_collection_type=related_collection_type,
offset=0,
limit=limit
),
'last': "{base_url}/{type}/{id}/{related_collection_type}?page[offset]={offset}&page[limit]={limit}".format(
base_url=base_url,
type=self.type,
id=self.id,
related_collection_type=related_collection_type,
offset=total_length - (total_length % int(limit)),
limit=limit
)
}
if int(offset) - int(limit) > 0:
response['links']['prev'] = "{base_url}/{type}/{id}/{related_collection_type}?page[offset]={offset}&page[limit]={limit}".format(
base_url=base_url,
type=self.type,
id=self.id,
related_collection_type=related_collection_type,
offset=int(offset) - int(limit),
limit=limit
)
if total_length > int(offset) + int(limit):
response['links']['next'] = "{base_url}/{type}/{id}/{related_collection_type}?page[offset]={offset}&page[limit]={limit}".format(
base_url=base_url,
type=self.type,
id=self.id,
related_collection_type=related_collection_type,
offset=int(offset) + int(limit),
limit=limit
)
# data
relation_type = eval('self.{related_collection_type}.definition'.format(
related_collection_type=related_collection_type)).get('relation_type')
results, columns = self.cypher(
"START a=node({self}) MATCH a-[:{relation_type}]-(b) RETURN b SKIP {offset} LIMIT {limit}".format(
self=self._id, relation_type=relation_type, offset=offset, limit=limit
)
)
related_node_or_nodes = [self.inflate(row[0]) for row in results]
if not eval("type(self.{related_collection_type})".format(related_collection_type=related_collection_type)) == ZeroOrOne:
response['data'] = list()
for the_node in related_node_or_nodes:
if the_node.active:
response['data'].append(the_node.get_resource_object())
for n in the_node.get_included_from_list(included):
if n not in response['included']:
response['included'].append(n)
elif related_node_or_nodes:
the_node = related_node_or_nodes[0]
response['data'].append(the_node.get_resource_object())
else:
response['data'] = None
r = make_response(jsonify(response))
r.status_code = http_error_codes.OK
r.headers['Content-Type'] = CONTENT_TYPE
except AttributeError:
r = application_codes.error_response([application_codes.RESOURCE_NOT_FOUND])
return r
def method_not_allowed(error):
"""Return an error response when requests supply an unsupported HTTP method"""
return application_codes.error_response(
[application_codes.METHOD_NOT_ALLOWED])
def not_found(error):
"""Return an error response for resources that don't exist"""
return application_codes.error_response(
[application_codes.RESOURCE_NOT_FOUND])
