PyQt and Buttons

Question

I want to assign a def and print results on a text field via PyQt. The script is already working on terminal so my issue is on Qt part. Here is my code:

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file '2Tarih.ui'
#
# Created by: PyQt4 UI code generator 4.11.4
#
# WARNING! All changes made in this file will be lost!

from PyQt4 import QtCore, QtGui
import pyodbc

def lme():

    cnxn = pyodbc.connect('DSN=;UID=;PWD=')
    cursor = cnxn.cursor()
    cursor.execute("select CONVERT(date,Tarih,104) as Tarih, LME, USD, EURO from dbo.DovizLme where Tarih = REPLACE(CONVERT(char(10), PARSE('%s' AS datetime USING 'tr-TR'),101),'/','.')" % self.tarih1)
    rows = cursor.fetchall()
    for row in rows:
        print("Tarih:", row[0], "LME:", row[1], "USD:", row[2], "EUR:", row[3])

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.UnicodeUTF8


    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)


class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(786, 520)
        self.buttonBox = QtGui.QDialogButtonBox(Dialog)
        self.buttonBox.setGeometry(QtCore.QRect(440, 480, 341, 32))
        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
        self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel | QtGui.QDialogButtonBox.Ok)
        self.buttonBox.setObjectName(_fromUtf8("buttonBox"))
        self.resultsView = QtGui.QPlainTextEdit(Dialog)
        self.resultsView.setGeometry(QtCore.QRect(10, 70, 771, 401))
        self.resultsView.setObjectName(_fromUtf8("resultsView"))
        self.sorgula = QtGui.QPushButton(Dialog)
        self.sorgula.setGeometry(QtCore.QRect(690, 10, 84, 33))
        self.sorgula.setObjectName(_fromUtf8("sorgula"))
        self.tarih1 = QtGui.QLineEdit(Dialog)
        self.tarih1.setGeometry(QtCore.QRect(10, 20, 151, 31))
        self.tarih1.setObjectName(_fromUtf8("tarih1"))
        self.tarih2 = QtGui.QLineEdit(Dialog)
        self.tarih2.setGeometry(QtCore.QRect(170, 20, 151, 31))
        self.tarih2.setObjectName(_fromUtf8("tarih2"))

        self.retranslateUi(Dialog)
        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("accepted()")), Dialog.accept)
        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("rejected()")), Dialog.reject)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(_translate("Dialog", "Dialog", None))
        self.sorgula.setText(_translate("Dialog", "Sorgula", None))
        self.tarih1.setPlaceholderText(_translate("Dialog", "Başlangıç Tarihi Giriniz", None))
        self.tarih2.setPlaceholderText(_translate("Dialog", "Bitiş Tarihi Giriniz", None))





if __name__ == "__main__":
    import sys

    app = QtGui.QApplication(sys.argv)
    Dialog = QtGui.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())

So I have 2 date field and 1 button. When i click the 'sorgula' button it should take the date written on 'tarih1' text field and run the def lme(): via that date info and return sql query results to 'resultsView' text field.

Thank you

Answer 1

I think you calling your function in wrong way and you are not connecting signals also. Either you can move the function inside you gui or you can keep it outside and pass your date as argument. I just moved inside the gui class.

#!/usr/bin/python
# -*- coding: utf-8 -*-

from PyQt4 import QtCore, QtGui
# import pyodbc

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.UnicodeUTF8


    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)


class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(786, 520)
        self.buttonBox = QtGui.QDialogButtonBox(Dialog)
        self.buttonBox.setGeometry(QtCore.QRect(440, 480, 341, 32))
        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
        self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel | QtGui.QDialogButtonBox.Ok)
        self.buttonBox.setObjectName(_fromUtf8("buttonBox"))
        self.resultsView = QtGui.QPlainTextEdit(Dialog)
        self.resultsView.setGeometry(QtCore.QRect(10, 70, 771, 401))
        self.resultsView.setObjectName(_fromUtf8("resultsView"))
        self.sorgula = QtGui.QPushButton(Dialog)
        self.sorgula.setGeometry(QtCore.QRect(690, 10, 84, 33))
        self.sorgula.setObjectName(_fromUtf8("sorgula"))
        self.tarih1 = QtGui.QLineEdit(Dialog)
        self.tarih1.setGeometry(QtCore.QRect(10, 20, 151, 31))
        self.tarih1.setObjectName(_fromUtf8("tarih1"))
        self.tarih2 = QtGui.QLineEdit(Dialog)
        self.tarih2.setGeometry(QtCore.QRect(170, 20, 151, 31))
        self.tarih2.setObjectName(_fromUtf8("tarih2"))

        self.retranslateUi(Dialog)
        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("accepted()")), Dialog.accept)
        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("rejected()")), Dialog.reject)
        self.sorgula.clicked.connect(self.lme)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def lme(self):
        textData = str(self.tarih1.text())
        cnxn = pyodbc.connect('DSN=;UID=;PWD=')
        cursor = cnxn.cursor()
        cursor.execute("select CONVERT(date,Tarih,104) as Tarih, LME, USD, EURO from dbo.DovizLme where Tarih = REPLACE(CONVERT(char(10), PARSE('%s' AS datetime USING 'tr-TR'),101),'/','.')" % textData)
        rows = cursor.fetchall()
        for row in rows:
            print("Tarih:", row[0], "LME:", row[1], "USD:", row[2], "EUR:", row[3])


    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(_translate("Dialog", "Dialog", None))
        self.sorgula.setText(_translate("Dialog", "Sorgula", None))
        self.tarih1.setPlaceholderText(_translate("Dialog", "Başlangıç Tarihi Giriniz", None))
        self.tarih2.setPlaceholderText(_translate("Dialog", "Bitiş Tarihi Giriniz", None))





if __name__ == "__main__":
    import sys

    app = QtGui.QApplication(sys.argv)
    Dialog = QtGui.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())