【发布时间】：2017-06-13 21:30:45
【问题描述】：
我创建了一个 GUI，允许用户从 sqlite 数据库中修改、过滤更新和删除。除了日期范围过滤器外，一切都很好。当我运行代码时，我没有收到错误，我只得到一个没有数据的空白过滤屏幕。有人看到我的代码有什么问题吗？ [第 1a 节，子组 {v} 是我正在寻求帮助的内容]。谢谢！
from PyQt4 import QtCore, QtGui, QtSql
import sys
import sqlite3
import time
import Search #imported ui.py MainWindow file
import os
try:
from PyQt4.QtCore import QString
except ImportError:
QString = str
class TableEditor(QtGui.QMainWindow, Search.Search_MainWindow):
def __init__(self, tableName, parent=None):
super(self.__class__, self).__init__()
self.setupUi(self)
self.model = QtSql.QSqlTableModel(self)
self.model.setTable('CAUTI')
self.model.setEditStrategy(QtSql.QSqlTableModel.OnManualSubmit)
self.model.select()
self.model.setHeaderData(0, QtCore.Qt.Horizontal, "MRN")
self.model.setHeaderData(1, QtCore.Qt.Horizontal, "Last Name")
self.model.setHeaderData(2, QtCore.Qt.Horizontal, "First Name")
self.model.setHeaderData(3, QtCore.Qt.Horizontal, "Date of Event")
self.model.setHeaderData(4, QtCore.Qt.Horizontal, "Facility")
self.model.setHeaderData(5, QtCore.Qt.Horizontal, "Unit")
self.model.setHeaderData(6, QtCore.Qt.Horizontal, "User")
self.tableView.setModel(self.model)
self.setWindowTitle("HAI Table")
self.tableView.setColumnWidth(0,100)
self.tableView.setColumnWidth(1,100)
self.tableView.setColumnWidth(2,100)
self.tableView.setColumnWidth(3,100)
self.tableView.setColumnWidth(4,100)
self.tableView.setColumnWidth(5,100)
self.tableView.setColumnWidth(6,83)
self.submitButton.clicked.connect(self.submit)
self.revertButton.clicked.connect(self.model.revertAll)
self.quitButton.clicked.connect(self.close)
current = QtCore.QDateTime.currentDateTime()
self.startDate.setDate(current.date())
self.endDate.setDate(current.date())
self.startDate.setDisplayFormat("M/dd/yyyy")
self.endDate.setDisplayFormat("M/dd/yyyy")
# Section 1: Signals
# {i} Search Fields Button Emitted:
# [1]
self.search_MRN_Button.clicked.connect(self.search_MRN_FilterRecord)
# [2]
self.search_Lname_Button.clicked.connect(self.search_Lname_FilterRecord)
# [3]
self.search_Unit_Button.clicked.connect(self.search_Unit_FilterRecord)
# {ii} Search Clear Buttons Emitted:
# [1]
self.search_MRN_CancelButton.clicked.connect(self.search_MRN_CancelButton_Clicked)
# [2]
self.search_Lname_CancelButton.clicked.connect(self.search_Lname_CancelButton_Clicked)
# [3]
self.search_Unit_CancelButton.clicked.connect(self.search_Unit_CancelButton_Clicked)
# {iii} Search Fields Button Emitted:
# [1]
self.search_MRN.selectionChanged.connect(self.search_MRN_Edit)
# [2]
self.search_Lname.selectionChanged.connect(self.search_Lname_Edit)
# [3]
self.search_Unit.selectionChanged.connect(self.search_Unit_Edit)
# {iv} Search Fields Button Emitted:
# [1]
self.search_MRN.returnPressed.connect(self.search_MRN_Enter)
# [2]
self.search_Lname.returnPressed.connect(self.search_Lname_Enter)
# [3]
self.search_Unit.returnPressed.connect(self.search_Unit_Enter)
#{v} Search Between 2 Dates
self.btnSubmit.clicked.connect(self.FilterBetweenDates)
# Section 1a: Slots from Section 1.
#{i} Search Field Button Slots:
#[1]
def search_MRN_FilterRecord(self):
text = self.search_MRN.text()
if len(text) == 0:
self.model.setFilter("")
else:
self.model.setFilter("MRN like'" +self.search_MRN.text()+ "%%'")
#self.model.setFilter("MRN = '%s'" % text)
#[2]
def search_Lname_FilterRecord(self):
text = self.search_Lname.text()
if len(text) == 0:
self.model.setFilter("")
else:
self.model.setFilter("Surname like'" +self.search_Lname.text()+ "%'")
#self.model.setFilter("Surname = '%s'" % text) #This line of code will only pull exact matches.
#[3]
def search_Unit_FilterRecord(self):
text = self.search_Unit.text()
if len(text) == 0:
self.model.setFilter("")
else:
self.model.setFilter("Unit like'" +self.search_Unit.text()+ "%'")
#self.model.setFilter("Unit = '%s'" % text) #This line of code will only pull exact matches.
#{ii} Search Field Cancel Button Slots:
#[1]
def search_MRN_CancelButton_Clicked(self):
self.model.setFilter("")
self.search_MRN.setText("MRN Search")
#[2]
def search_Lname_CancelButton_Clicked(self):
self.model.setFilter("")
self.search_Lname.setText("Last Name Search")
#[3]
def search_Unit_CancelButton_Clicked(self):
self.model.setFilter("")
self.search_Unit.setText("Unit Search")
#{iii} Search Text Edited Slots:
#[1]
def search_MRN_Edit(self):
self.search_MRN.setText("")
#[2]
def search_Lname_Edit(self):
self.search_Lname.setText("")
#[3]
def search_Unit_Edit(self):
self.search_Unit.setText("")
#{iv} Search Text Return Pressed (Enter) Slots:
#[1]
def search_MRN_Enter(self):
self.search_MRN_FilterRecord()
#[2]
def search_Lname_Enter(self):
self.search_Lname_FilterRecord()
#[3]
def search_Unit_Enter(self):
self.search_Unit_FilterRecord()
#{v} Filter Between Dates, Slot:
def FilterBetweenDates(self):
start = str(self.startDate.text())
finish = str(self.endDate.text())
self.model.setFilter("EventDate BETWEEN'" + start and finish)
def submit(self):
self.model.database().transaction()
if self.model.submitAll():
self.model.database().commit()
else:
self.model.database().rollback()
QtGui.QMessageBox.warning(self, "HAI Table",
"The database reported an error: %s" % self.model.lastError().text())
def main():
app = QtGui.QApplication(sys.argv)
#app.setStyle( "Plastique" )
db = QtSql.QSqlDatabase.addDatabase('QSQLITE')
db.setDatabaseName('HAI.db')
editor = TableEditor('CAUTI')
editor.show()
app.exec_()
if __name__ == '__main__':
【问题讨论】：
标签： python qt sqlite pyqt qtableview