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database.py
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database.py
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import pymysql
pymysql.install_as_MySQLdb()
from project.ticket.models import Ticket
from project.user.models import User
from config import *
class UserSQL(object):
def __init__(self):
pass
@staticmethod
def create_table():
# Open database connection
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
# prepare a cursor object using cursor() method
cursor = db.cursor()
# Drop table if it already exist using execute() method.
cursor.execute("DROP TABLE IF EXISTS user")
# Create table as per requirement
sql = """CREATE TABLE user (
ID INT NOT NULL AUTO_INCREMENT,
userID CHAR(50) NOT NULL,
password CHAR(100),
admin CHAR(20),
PRIMARY KEY (ID)
);"""
cursor.execute(sql)
db.close()
@staticmethod
def drop_table():
# Open database connection
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
# prepare a cursor object using cursor() method
cursor = db.cursor()
# Drop table if it already exist using execute() method.
cursor.execute("DROP TABLE IF EXISTS user")
db.close()
@staticmethod
def selectAll():
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """SELECT * FROM user"""
users = []
try:
# Execute the SQL command
cursor.execute(sql)
results = cursor.fetchall()
for row in results:
id, userID, password, admin = row[0], row[1], row[2], row[3]
user = User(userID, password, admin)
users.append(user)
except Exception as error:
print("Unable to fetch data: ", error)
# disconnect from server
db.close()
return users
@staticmethod
def selectByUserID(userID):
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """SELECT * FROM `User` \
WHERE `User`.userID = %(userID)s"""
params = {"userID": userID}
users = []
try:
# Execute the SQL command
cursor.execute(sql, params)
results = cursor.fetchall()
for row in results:
id, userID, password, admin = row[0], row[1], row[2], row[3]
user = User(id, userID, password, admin)
users.append(user)
except Exception as error:
print("Unable to fetch data: ", error)
# disconnect from server
db.close()
return users
@staticmethod
def insert(object):
id, userID, password, admin = object.id, object.userID, object.password, object.admin
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """INSERT INTO
User(userID, password, admin)
VALUES
(%(userID)s, %(password)s, %(admin)s)"""
params = {"userID": userID, "password": password, "admin": admin}
try:
# Execute the SQL command
cursor.execute(sql, params)
# Commit your changes in the database
db.commit()
except Exception as error:
# Rollback in case there is any error
print(error)
db.rollback()
# disconnect from server
db.close()
@staticmethod
def update(object):
id, userID, password, admin = object.id, object.userID, object.password, object.admin
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """UPDATE User SET `User`.userID = %(userID)s, `User`.password = %(password)s,
`User`.admin = %(admin)s
WHERE `User`.id = %(id)s"""
params = {"id": id, "userID": userID, "password": password, "admin": admin}
try:
# Execute the SQL command
cursor.execute(sql, params)
# Commit your changes in the database
db.commit()
except:
# Rollback in case there is any error
db.rollback()
# disconnect from server
db.close()
@staticmethod
def delete(object):
id = object.id
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
sql = """DELETE FROM User
WHERE `User`.id = %(id)s"""
params = {"id": id}
try:
# Execute the SQL command
cursor.execute(sql, params)
# Commit your changes in the database
db.commit()
except:
# Rollback in case there is any error
db.rollback()
# disconnect from server
db.close()
@staticmethod
def isExisted(object):
if len(users) > 0:
return True
else:
return False
class TicketSQL(object):
def __init__(self):
pass
@staticmethod
def create_table():
# Open database connection
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
# prepare a cursor object using cursor() method
cursor = db.cursor()
# Drop table if it already exist using execute() method.
cursor.execute("DROP TABLE IF EXISTS Ticket")
# Create table as per requirement
sql = """CREATE TABLE Ticket (
ID INT NOT NULL AUTO_INCREMENT,
userID CHAR(50) NOT NULL,
room CHAR(20),
title CHAR(100),
description CHAR(200),
start CHAR(100),
end CHAR(100),
timestamp BIGINT,
PRIMARY KEY (ID)
);"""
cursor.execute(sql)
db.close()
@staticmethod
def drop_table():
# Open database connection
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
# prepare a cursor object using cursor() method
cursor = db.cursor()
# Drop table if it already exist using execute() method.
cursor.execute("DROP TABLE IF EXISTS Ticket")
db.close()
@staticmethod
def selectAll():
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """SELECT * FROM Ticket"""
tickets = []
try:
# Execute the SQL command
cursor.execute(sql)
results = cursor.fetchall()
for row in results:
id, userID, room, title, description, start, end, timestamp = row[0], row[1], row[2], row[3], row[4], row[5], row[6], row[7]
ticket = Ticket(id, userID, room, title, description, start, end, timestamp)
tickets.append(ticket)
except Exception as error:
print("Unable to fetch data: ", error)
# disconnect from server
db.close()
return tickets
@staticmethod
def selectByRoomAndTimestamps(room, timestamps):
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """SELECT * FROM `Ticket` \
WHERE `Ticket`.room = %(room)s AND `Ticket`.timestamp IN %(timestamps)s"""
params = {'room': room, 'timestamps': tuple(timestamps)}
tickets = []
try:
# Execute the SQL command
cursor.execute(sql, params)
results = cursor.fetchall()
for row in results:
id, userID, room, title, description, start, end, timestamp = row[0], row[1], row[2], row[3], row[4], row[5], row[6], row[7]
ticket = Ticket(id, userID, room, title, description, start, end, timestamp)
tickets.append(ticket)
except Exception as error:
print("Unable to fetch data: ", error)
# disconnect from server
db.close()
return tickets
@staticmethod
def insert(object):
userID, room, title, description, start, end, timestamp = object.userID, object.room, object.title, object.description, object.start, object.end, object.timestamp
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """INSERT INTO
TICKET(userID, room, title, description, start, end, timestamp)
VALUES
(%(userID)s, %(room)s, %(title)s, %(description)s, %(start)s, %(end)s, %(timestamp)s)"""
params = {"userID": userID, "room": room, "title": title, "description": description, "start": start, "end": end, "timestamp": timestamp}
try:
# Execute the SQL command
cursor.execute(sql, params)
# Commit your changes in the database
db.commit()
except Exception as error:
# Rollback in case there is any error
print(error)
db.rollback()
# disconnect from server
db.close()
@staticmethod
def update(object):
id, title, description, start, end = object.id, object.title, object.description, object.start, object.end
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """UPDATE Ticket SET `Ticket`.title = %(title)s, `Ticket`.description = %(description)s,
`Ticket`.start = %(start)s, `Ticket`.end = %(end)s
WHERE `Ticket`.id = %(id)s"""
params = {"id": id, "title": title, "description": description, "start": start, "end": end}
try:
# Execute the SQL command
cursor.execute(sql, params)
# Commit your changes in the database
db.commit()
except:
# Rollback in case there is any error
db.rollback()
# disconnect from server
db.close()
@staticmethod
def delete(object):
# userID, room, title, description, start, end, timestamp = object.userID, object.room, object.title, object.description, object.start, object.end, object.timestamp
id = object.id
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
sql = """DELETE FROM Ticket
WHERE `Ticket`.id = %(id)s"""
params = {"id": id}
try:
# Execute the SQL command
cursor.execute(sql, params)
# Commit your changes in the database
db.commit()
except:
# Rollback in case there is any error
db.rollback()
# disconnect from server
db.close()
@staticmethod
def isExisted(object):
id = object.id
# Connect to database
db = pymysql.connect(host=HOST, user=USER,
passwd=PASSWD, db=DATABASE)
cursor = db.cursor()
# SQL command
sql = """SELECT * FROM `Ticket` \
WHERE `Ticket`.id = %(id)s"""
params = {"id": id}
tickets = []
try:
# Execute the SQL command
cursor.execute(sql, params)
results = cursor.fetchall()
for row in results:
id, userID, room, title, description, start, end, timestamp = row[0], row[1], row[2], row[3], row[4], row[5], row[6], row[7]
ticket = Ticket(id, userID, room, title, description, start, end, timestamp)
tickets.append(ticket)
except Exception as error:
print("Unable to fetch data: ", error)
# disconnect from server
db.close()
if len(tickets) > 0:
return True
else:
return False