/
resources.py
executable file
·202 lines (158 loc) · 6.08 KB
/
resources.py
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#!/usr/bin/env python
from models import User, Group, association_table
from db import session
import json
import re
from sqlalchemy import func
from flask.ext.restful import reqparse
from flask.ext.restful import abort
from flask.ext.restful import Resource
from flask.ext.restful import fields
from flask.ext.restful import marshal_with
from datetime import datetime
user_fields = {
'id': fields.Integer,
'name': fields.String,
'email': fields.String,
'uri': fields.Url('user', absolute=True),
}
group_fields = {
'id': fields.Integer,
'name': fields.String,
'date_created': fields.DateTime(dt_format='rfc822'),
'uri': fields.Url('group', absolute=True),
}
parser = reqparse.RequestParser()
parser.add_argument('name', type=str)
parser.add_argument('email', type=str)
def createJSON(input_list):
result_list = []
for i in input_list:
dictionary = {}
dictionary[str(i[0])] = i[1]
result_list.append(json.dumps(dictionary))
return result_list
def check_email_syntax(input_email):
email_regex = "(^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$)"
if re.match(email_regex, input_email):
return True
else:
return False
class UserResource(Resource):
@marshal_with(user_fields)
def post(self):
parsed_args = parser.parse_args()
input_email = parsed_args['email']
if not check_email_syntax(input_email):
abort(400, message="Email - {} syntax is invalid".format(input_email))
user = User(name=parsed_args['name'], email=input_email)
session.add(user)
session.commit()
return user, 201
@marshal_with(user_fields)
def get(self):
users = session.query(User).order_by(User.name).all()
return users, 200
class EditUserResource(Resource):
@marshal_with(user_fields)
def put(self, id):
parsed_args = parser.parse_args()
input_email = parsed_args['email']
if not check_email_syntax(input_email):
abort(400, message="Email - {} syntax is invalid".format(input_email))
user = session.query(User).filter(User.id == id).first()
if not user:
abort(404, message="User {} doesn't exist".format(id))
user.name = parsed_args['name']
user.email = parsed_args['email']
session.add(user)
session.commit()
return user, 200
@marshal_with(user_fields)
def delete(self, id):
user = session.query(User).filter(User.id == id).first()
if not user:
abort(404, message="User {} doesn't exist".format(id))
session.delete(user)
session.commit()
return user, 200
class GroupResource(Resource):
@marshal_with(group_fields)
def post(self):
parsed_args = parser.parse_args()
group = Group(name=parsed_args['name'])
session.add(group)
session.commit()
return group, 201
@marshal_with(group_fields)
def get(self):
groups = session.query(Group).order_by(Group.name).all()
return groups, 200
class EditGroupResource(Resource):
@marshal_with(group_fields)
def put(self, id):
parsed_args = parser.parse_args()
group = session.query(Group).filter(Group.id == id).first()
if not group:
abort(404, message="Group {} doesn't exist".format(id))
group.name = parsed_args['name']
today = datetime.now()
group.date_created = datetime(today.year, today.month, today.day, today.hour, today.minute, today.second)
session.add(group)
session.commit()
return group, 200
@marshal_with(group_fields)
def delete(self, id):
group = session.query(Group).filter(Group.id == id).first()
if not group:
abort(404, message="Group {} doesn't exist".format(id))
session.delete(group)
session.commit()
return group, 200
class UserToGroupResource(Resource):
@marshal_with(user_fields)
def post(self, user_id, group_id):
user = session.query(User).filter(User.id == user_id).first()
group = session.query(Group).filter(Group.id == group_id).first()
if not (user or group):
abort(404, message="user or group doesn't exist")
group.users.append(user)
session.commit()
return user, 201
@marshal_with(user_fields)
def delete(self, user_id, group_id):
user = session.query(User).filter(User.id == user_id).first()
group = session.query(Group).filter(Group.id == group_id).first()
if not (user or group):
abort(404, message="user or group doesn't exist")
group.users.remove(user)
session.commit()
return user, 200
class GetUsersFromGroupResource(Resource):
@marshal_with(user_fields)
def get(self, group_id):
group = Group.query.filter(Group.id == group_id).first()
if not group:
abort(404, message="Group {} doesn't exist".format(group_id))
users = Group.query.filter(Group.id == group_id).first().users
return users, 200
class GetGroupsFromUserResource(Resource):
@marshal_with(group_fields)
def get(self, user_id):
user = session.query(User).filter(User.id == user_id).first()
if not user:
abort(404, message="User {} doesn't exist".format(user_id))
groups = session.query(Group).join(Group.users).filter(User.id == user_id).all()
return groups, 200
class ListUsersWithGroupCountResource(Resource):
def get(self):
all_users = session.query(User.name, func.count(association_table.c.group_id).label('group_count')). \
join(association_table).group_by(User).order_by('group_count ASC').all()
result_list = createJSON(all_users)
return result_list, 200
class ListGroupsWithUserCountResource(Resource):
def get(self):
all_groups = session.query(Group.name, func.count(association_table.c.user_id).label('user_count')).\
join(association_table).group_by(Group).order_by('user_count DESC').all()
result_list = createJSON(all_groups)
return result_list, 200