def __init__(self):
QtGui.QDialog.__init__(self)
self.removeStu = Ui_removeStudentDialog()
self.removeStu.setupUi(self)
self.model = QtGui.QStandardItemModel()
self.conn()
self.removeStu.sel_student = QSqlRelationalTableModel(db=self.db)
self.removeStu.sel_student.setTable("Student")
if not self.conn():
QtGui.QMessageBox.warning(self, 'Error',
'database contecting error')
# get student name
self.student_query = QSqlQuery()
self.student_query.exec_("Select Student_name FROM Student")
while self.student_query.next():
record = self.student_query.record()
item = QtGui.QStandardItem()
self.name = str(record.value(0))
item.setText(self.name)
self.model.appendRow(item)
# set up list view model
self.removeStu.studentListView.setModel(self.model)
self.removeStu.studentListView.setSelectionMode(
QtGui.QAbstractItemView.ExtendedSelection)
self.removeStu.ok_btn.clicked.connect(self.submit)
self.removeStu.cancel_btn.clicked.connect(self.close)
self.removeStu.Search_btn.clicked.connect(self.search)
def __init__(self):
QtGui.QDialog.__init__(self)
self.removeStu = Ui_removeStudentDialog()
self.removeStu.setupUi(self)
self.model = QtGui.QStandardItemModel()
self.conn()
self.removeStu.sel_student = QSqlRelationalTableModel(db = self.db)
self.removeStu.sel_student.setTable("Student")
if not self.conn():
QtGui.QMessageBox.warning(
self, 'Error', 'database contecting error')
# get student name
self.student_query = QSqlQuery()
self.student_query.exec_("Select Student_name FROM Student")
while self.student_query.next():
record = self.student_query.record()
item = QtGui.QStandardItem()
self.name = str(record.value(0))
item.setText(self.name)
self.model.appendRow(item)
# set up list view model
self.removeStu.studentListView.setModel(self.model)
self.removeStu.studentListView.setSelectionMode(QtGui.QAbstractItemView.ExtendedSelection)
self.removeStu.ok_btn.clicked.connect(self.submit)
self.removeStu.cancel_btn.clicked.connect(self.close)
self.removeStu.Search_btn.clicked.connect(self.search)
class removeStudentData(QtGui.QDialog):
def __init__(self):
QtGui.QDialog.__init__(self)
self.removeStu = Ui_removeStudentDialog()
self.removeStu.setupUi(self)
self.model = QtGui.QStandardItemModel()
self.conn()
self.removeStu.sel_student = QSqlRelationalTableModel(db=self.db)
self.removeStu.sel_student.setTable("Student")
if not self.conn():
QtGui.QMessageBox.warning(self, 'Error',
'database contecting error')
# get student name
self.student_query = QSqlQuery()
self.student_query.exec_("Select Student_name FROM Student")
while self.student_query.next():
record = self.student_query.record()
item = QtGui.QStandardItem()
self.name = str(record.value(0))
item.setText(self.name)
self.model.appendRow(item)
# set up list view model
self.removeStu.studentListView.setModel(self.model)
self.removeStu.studentListView.setSelectionMode(
QtGui.QAbstractItemView.ExtendedSelection)
self.removeStu.ok_btn.clicked.connect(self.submit)
self.removeStu.cancel_btn.clicked.connect(self.close)
self.removeStu.Search_btn.clicked.connect(self.search)
def search(self):
stu_name = self.removeStu.Student_lineEdit.text()
stu_query = QSqlQuery()
stu_query.exec_(
"select Student_name FROM Student where Student_name like '%%%s%%'"
% stu_name)
model = QSqlQueryModel()
model.setQuery(stu_query)
self.removeStu.studentListView.setModel(model)
def submit(self):
studentList = [] #selected student
stuAddressCounter = 0 # counter to see if address used more then once
guardCounter = 0 # same for guardian
secondaryGuardCounter = 0
# build student
for selected in self.removeStu.studentListView.selectedIndexes():
studentList.append(str(selected.data()))
for student in studentList:
getId = QSqlQuery()
getId.exec_("Select Student_id FROM Student WHERE \
Student_name = '%s'" % student)
while getId.next():
record = getId.record()
self.id = int(record.value(0))
# get addresses
getAddress = QSqlQuery()
# select address for a single student and then check if others have same address
getAddress.exec_("Select Student_address from Student WHERE \
Student_address = (Select Student_address from Student WHERE\
Student_name = '%s')" % student)
while getAddress.next():
record = getAddress.record()
addressId = int(record.value(0))
stuAddressCounter += 1
# get guardians
getGuardian = QSqlQuery()
getGuardian.exec_(
"Select Guardian_primary, Guardian_secondary from Student WHERE \
Guardian_primary = (Select Guardian_primary from Student WHERE \
Student_name = '%s') AND (Guardian_secondary = (Select Guardian_secondary from Student WHERE \
Student_name = '%s') OR Guardian_secondary IS NULL) " %
(student, student))
while getGuardian.next():
record = getGuardian.record()
guardId = int(record.value(0))
guardIdSecondary = int(record.value(1))
guardCounter += 1
if (guardIdSecondary != None):
secondaryGuardCounter += 1
# double check with user before removal
self.confirmMessage = "Are you sure you want to remove '%s' from the system? This will remove all relevant information, including payments and billing. This action can not be reversed." \
%(student)
self.confirmReply = QtGui.QMessageBox.question(
self, 'Confirm', self.confirmMessage, QtGui.QMessageBox.Yes,
QtGui.QMessageBox.No)
if (self.confirmReply == QtGui.QMessageBox.Yes):
self.confirm = QSqlQuery()
self.confirm.exec_(
"DELETE from Student WHERE Student_name = '%s'" % student)
self.confirm.exec_(
"DELETE from Student_Class WHERE Student_id = %d" %
self.id)
self.confirm.exec_(
"DELETE from Credits WHERE Student_id = %d" % self.id)
self.confirm.exec_(
"DELETE from Discount WHERE Student_id = %d" % self.id)
self.confirm.exec_(
"DELETE from Payment WHERE Student_id = %d" % self.id)
'''
# delete if this student is the only student that lives at their address.
# Prevent delete if someone still in the system lives at the address
# and make sure not to delete the NONE addreess
'''
'''
# delete if this guardian is the only student that lives at their address.
# Prevent delete if someone still in the system lives at the address
# and make sure not to delete the NONE addreess
'''
if (guardCounter == 1 and guardId != 0):
guardAddressCounter = 0
# check guardian addresses
getAddress.exec_(
"Select Guardian_address from Guardian WHERE \
Guardian_address = (Select Guardian_address from Guardian WHERE\
Graudian_id = %d)" % guardId)
while getAddress.next():
record = getAddress.record()
guardAddressId = int(record.value(0))
if (guardAddressId != None):
guardAddressCounter += 1
# Delete guardian if only one student tied to them
self.confirm.exec_(
"DELETE from Guardian WHERE Guardian_id = %d" %
guardId)
if (secondaryGuardCounter == 1 and guardIdSecondary != 0):
# same for secondary guardian
secondaryAddressCounter = 0
getAddress.exec_(
"Select Guardian_address from Guardian WHERE \
Guardian_address = (Select Guardian_address from Guardian WHERE\
Graudian_id = %d)" % guardIdSecondary)
while getAddress.next():
record = getAddress.record()
secondaryAddressId = int(record.value(0))
if (secondaryAddressId != None):
secondaryAddressCounter += 1
self.confirm.exec_(
"DELETE from Guardian WHERE Guardian_id = %d" %
guardIdSecondary)
'''
Here are the three checks to see if the address can be deleted safely
1. if 1 student and 1 guardian and 1 secondary
2. 1 student and 1 guardian
3. 1 student
Otherwise do not delete address and finsh removal
'''
if ((stuAddressCounter == 1 and guardAddressCounter == 1
and secondaryAddressCounter == 1) and addressId != 0):
self.confirm.exec_(
"DELETE from Address WHERE Address_id = %d" %
addressId)
elif ((stuAddressCounter == 1 and guardAddressCounter == 1
and secondaryAddressCounter == 0) and addressId != 0):
self.confirm.exec_(
"DELETE from Address WHERE Address_id = %d" %
addressId)
elif ((stuAddressCounter == 1 and guardAddressCounter == 0
and secondaryAddressCounter == 0) and addressId != 0):
self.confirm.exec_(
"DELETE from Address WHERE Address_id = %d" %
addressId)
self.message = "Student removed"
#refresh list
self.refreshModel()
self.confirmReply = QtGui.QMessageBox.information(
self, 'Message', self.message)
'''
refreshModel resets the list view after a removal
'''
def refreshModel(self):
self.model.clear()
self.student_query = QSqlQuery()
self.student_query.exec_("Select Student_name FROM Student")
while self.student_query.next():
record = self.student_query.record()
item = QtGui.QStandardItem()
self.name = str(record.value(0))
item.setText(self.name)
self.model.appendRow(item)
self.removeStu.studentListView.setModel(self.model)
self.removeStu.studentListView.setSelectionMode(
QtGui.QAbstractItemView.ExtendedSelection)
def conn(self):
self.db = QSqlDatabase.addDatabase("QMYSQL")
self.db.setHostName("services1.mcs.sdsmt.edu")
self.db.setDatabaseName("db_dancesoft_f15")
self.db.setUserName("dancesoft_f15")
self.db.setPassword("DanceSoft")
return self.db.open()
class removeStudentData(QtGui.QDialog):
def __init__(self):
QtGui.QDialog.__init__(self)
self.removeStu = Ui_removeStudentDialog()
self.removeStu.setupUi(self)
self.model = QtGui.QStandardItemModel()
self.conn()
self.removeStu.sel_student = QSqlRelationalTableModel(db = self.db)
self.removeStu.sel_student.setTable("Student")
if not self.conn():
QtGui.QMessageBox.warning(
self, 'Error', 'database contecting error')
# get student name
self.student_query = QSqlQuery()
self.student_query.exec_("Select Student_name FROM Student")
while self.student_query.next():
record = self.student_query.record()
item = QtGui.QStandardItem()
self.name = str(record.value(0))
item.setText(self.name)
self.model.appendRow(item)
# set up list view model
self.removeStu.studentListView.setModel(self.model)
self.removeStu.studentListView.setSelectionMode(QtGui.QAbstractItemView.ExtendedSelection)
self.removeStu.ok_btn.clicked.connect(self.submit)
self.removeStu.cancel_btn.clicked.connect(self.close)
self.removeStu.Search_btn.clicked.connect(self.search)
def search(self):
stu_name = self.removeStu.Student_lineEdit.text()
stu_query = QSqlQuery()
stu_query.exec_("select Student_name FROM Student where Student_name like '%%%s%%'" % stu_name)
model = QSqlQueryModel()
model.setQuery(stu_query)
self.removeStu.studentListView.setModel(model)
def submit(self):
studentList = [] #selected student
stuAddressCounter = 0 # counter to see if address used more then once
guardCounter = 0 # same for guardian
secondaryGuardCounter = 0
# build student
for selected in self.removeStu.studentListView.selectedIndexes():
studentList.append(str(selected.data()))
for student in studentList:
getId = QSqlQuery()
getId.exec_("Select Student_id FROM Student WHERE \
Student_name = '%s'" % student)
while getId.next():
record = getId.record()
self.id = int(record.value(0))
# get addresses
getAddress = QSqlQuery()
# select address for a single student and then check if others have same address
getAddress.exec_("Select Student_address from Student WHERE \
Student_address = (Select Student_address from Student WHERE\
Student_name = '%s')" % student)
while getAddress.next():
record = getAddress.record()
addressId = int(record.value(0))
stuAddressCounter += 1
# get guardians
getGuardian = QSqlQuery()
getGuardian.exec_("Select Guardian_primary, Guardian_secondary from Student WHERE \
Guardian_primary = (Select Guardian_primary from Student WHERE \
Student_name = '%s') AND (Guardian_secondary = (Select Guardian_secondary from Student WHERE \
Student_name = '%s') OR Guardian_secondary IS NULL) " % (student, student))
while getGuardian.next():
record = getGuardian.record()
guardId = int(record.value(0))
guardIdSecondary = int(record.value(1))
guardCounter += 1
if (guardIdSecondary != None):
secondaryGuardCounter += 1
# double check with user before removal
self.confirmMessage = "Are you sure you want to remove '%s' from the system? This will remove all relevant information, including payments and billing. This action can not be reversed." \
%(student)
self.confirmReply = QtGui.QMessageBox.question(self, 'Confirm',
self.confirmMessage, QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
if (self.confirmReply == QtGui.QMessageBox.Yes):
self.confirm = QSqlQuery()
self.confirm.exec_("DELETE from Student WHERE Student_name = '%s'" % student)
self.confirm.exec_("DELETE from Student_Class WHERE Student_id = %d" % self.id)
self.confirm.exec_("DELETE from Credits WHERE Student_id = %d" % self.id)
self.confirm.exec_("DELETE from Discount WHERE Student_id = %d" % self.id)
self.confirm.exec_("DELETE from Payment WHERE Student_id = %d" % self.id)
'''
# delete if this student is the only student that lives at their address.
# Prevent delete if someone still in the system lives at the address
# and make sure not to delete the NONE addreess
'''
'''
# delete if this guardian is the only student that lives at their address.
# Prevent delete if someone still in the system lives at the address
# and make sure not to delete the NONE addreess
'''
if (guardCounter == 1 and guardId != 0):
guardAddressCounter = 0
# check guardian addresses
getAddress.exec_("Select Guardian_address from Guardian WHERE \
Guardian_address = (Select Guardian_address from Guardian WHERE\
Graudian_id = %d)" % guardId)
while getAddress.next():
record = getAddress.record()
guardAddressId = int(record.value(0))
if (guardAddressId != None):
guardAddressCounter += 1
# Delete guardian if only one student tied to them
self.confirm.exec_("DELETE from Guardian WHERE Guardian_id = %d" % guardId)
if (secondaryGuardCounter == 1 and guardIdSecondary != 0):
# same for secondary guardian
secondaryAddressCounter = 0
getAddress.exec_("Select Guardian_address from Guardian WHERE \
Guardian_address = (Select Guardian_address from Guardian WHERE\
Graudian_id = %d)" % guardIdSecondary)
while getAddress.next():
record = getAddress.record()
secondaryAddressId = int(record.value(0))
if (secondaryAddressId != None):
secondaryAddressCounter += 1
self.confirm.exec_("DELETE from Guardian WHERE Guardian_id = %d" % guardIdSecondary)
'''
Here are the three checks to see if the address can be deleted safely
1. if 1 student and 1 guardian and 1 secondary
2. 1 student and 1 guardian
3. 1 student
Otherwise do not delete address and finsh removal
'''
if ((stuAddressCounter == 1 and guardAddressCounter == 1 and secondaryAddressCounter == 1) and addressId != 0):
self.confirm.exec_("DELETE from Address WHERE Address_id = %d" % addressId)
elif ((stuAddressCounter == 1 and guardAddressCounter == 1 and secondaryAddressCounter == 0) and addressId != 0):
self.confirm.exec_("DELETE from Address WHERE Address_id = %d" % addressId)
elif ((stuAddressCounter == 1 and guardAddressCounter == 0 and secondaryAddressCounter == 0) and addressId != 0):
self.confirm.exec_("DELETE from Address WHERE Address_id = %d" % addressId)
self.message = "Student removed"
#refresh list
self.refreshModel()
self.confirmReply = QtGui.QMessageBox.information(self, 'Message',
self.message)
'''
refreshModel resets the list view after a removal
'''
def refreshModel(self):
self.model.clear()
self.student_query = QSqlQuery()
self.student_query.exec_("Select Student_name FROM Student")
while self.student_query.next():
record = self.student_query.record()
item = QtGui.QStandardItem()
self.name = str(record.value(0))
item.setText(self.name)
self.model.appendRow(item)
self.removeStu.studentListView.setModel(self.model)
self.removeStu.studentListView.setSelectionMode(QtGui.QAbstractItemView.ExtendedSelection)
def conn(self):
self.db = QSqlDatabase.addDatabase("QMYSQL")
self.db.setHostName("services1.mcs.sdsmt.edu")
self.db.setDatabaseName("db_dancesoft_f15")
self.db.setUserName("dancesoft_f15")
self.db.setPassword("DanceSoft")
return self.db.open()
