def __init__(self):
QtGui.QMainWindow.__init__(self)
self.assign = Ui_Assign_teacher_window()
self.assign.setupUi(self)
self.conn()
if not self.conn():
QtGui.QMessageBox.warning(
self, 'Error', 'database contecting error')
self.assign.sel_teach = QSqlRelationalTableModel(db = self.db)
self.assign.sel_teach.setTable("Class")
self.class_query = QSqlQuery()
self.class_query.exec_("Select Class_name FROM Class")
self.class_result = QSqlQueryModel()
self.class_result.setQuery(self.class_query)
self.assign.Class_listView.setModel(self.class_result)
self.assign.Class_listView.clicked.connect(self.teacher_assignment)
class assign_teacher(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.assign = Ui_Assign_teacher_window()
self.assign.setupUi(self)
self.dialogbox_Flag = False
self.conn()
if not self.conn():
QtGui.QMessageBox.warning(
self, 'Error', 'database contecting error')
self.assign.sel_teach = QSqlRelationalTableModel(db = self.db)
self.assign.sel_teach.setTable("Class")
self.class_query = QSqlQuery()
self.class_query.exec_("Select Class_name FROM Class")
self.class_result = QSqlQueryModel()
self.class_result.setQuery(self.class_query)
self.assign.Class_listView.setModel(self.class_result)
self.assign.Class_listView.clicked.connect(self.teacher_assignment)
self.assign.Assign_teacher_back_btn.clicked.connect(self.back)
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()
def teacher_assignment(self, class_index):
self.current_teacher = ''
self.selected_class = class_index.data()
self.current_teacher_query = QSqlQuery()
self.current_teacher_query.exec("SELECT Teacher_name FROM Teacher \
WHERE Teacher_id = (SELECT DISTINCT Teacher_Class.Teacher_id\
FROM Teacher, Teacher_Class WHERE Teacher_Class.Class_id = \
(select Class_id from Class where class_name = '%s'))" % (self.selected_class))
self.current_teacher_query.next()
self.current_teacher = self.current_teacher_query.value(0)
if self.current_teacher != None:
confirm_msg = "This class is currently assigned to '%s' do you want to change teachers" %(self.current_teacher)
reply = QtGui.QMessageBox.question(self, 'Reassign Class',
confirm_msg, QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
if reply == QtGui.QMessageBox.Yes:
self.teacher_query = QSqlQuery()
self.teacher_query.exec_( "SELECT Teacher_name from Teacher WHERE Teacher_name\
not in (SELECT NC.Teacher_name from (SELECT T.Teacher_name, C.Class_time, C.Class_end_time\
from Teacher as T, Teacher_Class as TC, Class as C WHERE TC.Teacher_id = T.Teacher_id and \
TC.Class_id = C.Class_id) as NC, (SELECT C.Class_time, C.Class_end_time FROM Class \
as C WHERE C.Class_name = '%s') as C WHERE not (NC.Class_time >= C.Class_end_time or \
C.Class_time >= NC.Class_end_time))" % (self.selected_class))
self.teacher_result = QSqlQueryModel()
self.teacher_result.setQuery(self.teacher_query)
self.assign.Teacher_listView.setModel(self.teacher_result)
self.assign.Teacher_listView.clicked.connect(self.Update_assign_teacher)
self.dialogbox_Flag = False
else:
self.teacher_query = QSqlQuery()
self.teacher_query.exec_( "SELECT Teacher_name from Teacher WHERE Teacher_name\
not in (SELECT NC.Teacher_name from (SELECT T.Teacher_name, C.Class_time, C.Class_end_time\
from Teacher as T, Teacher_Class as TC, Class as C WHERE TC.Teacher_id = T.Teacher_id and \
TC.Class_id = C.Class_id) as NC, (SELECT C.Class_time, C.Class_end_time FROM Class \
as C WHERE C.Class_name = '%s') as C WHERE not (NC.Class_time >= C.Class_end_time or \
C.Class_time >= NC.Class_end_time))" % (self.selected_class))
self.teacher_result = QSqlQueryModel()
self.teacher_result.setQuery(self.teacher_query)
self.assign.Teacher_listView.setModel(self.teacher_result)
self.assign.Teacher_listView.clicked.connect(self.assign_teacher)
def assign_teacher(self, teacher_index):
confirm_msg = "Are you sure you want to assign '%s' to teach '%s'" %(teacher_index.data(), self.selected_class)
reply = QtGui.QMessageBox.question(self, 'Confirm',
confirm_msg, QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
if reply == QtGui.QMessageBox.Yes:
get_data_query = QSqlQuery()
get_data_query.exec("Select Teacher_id, Class_id FROM Teacher, Class WHERE Teacher_name = '%s' AND Class_name = '%s'" % (teacher_index.data(), self.selected_class) )
get_data_query.next()
self.teacher_rec = get_data_query.value(0)
self.class_rec = get_data_query.value(1)
#assign teacher query
assign_teach_query = QSqlQuery()
assign_teach_query.exec("INSERT INTO Teacher_Class Values('%s','%s')" %(self.teacher_rec, self.class_rec))
def Update_assign_teacher(self, teacher_index):
if self.dialogbox_Flag == False:
print("Problem ")
confirm_msg = "Are you sure you want to assign '%s' to teach '%s'" %(teacher_index.data(), self.selected_class)
reply = QtGui.QMessageBox.question(self, 'Confirm',
confirm_msg, QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
if reply == QtGui.QMessageBox.Yes:
get_data_query = QSqlQuery()
get_data_query.exec("Select Teacher_id, Class_id FROM Teacher, Class WHERE Teacher_name = '%s' AND Class_name = '%s'" % (teacher_index.data(), self.selected_class) )
get_data_query.next()
self.teacher_rec = get_data_query.value(0)
self.class_rec = get_data_query.value(1)
#assign teacher query
assign_teach_query = QSqlQuery()
assign_teach_query.exec("Update Teacher_Class SET Teacher_id = '%s' WHERE Class_id = '%s'" %(self.teacher_rec, self.class_rec))
self.dialogbox_Flag = True
def back(self):
sys.exit(app.exec_())
