I have tried to get the text form QLineEdit but I always get "" empty string.

Here is my code:

Database.h
Qt Code: 
  1. #ifndef DATABASE_H
  2. #define DATABASE_H
  3.  
  4. #include <QObject>
  5. #include <QtSql>
  6. #include <QtGui>
  7. #include "MainWindow.h"
  8.  
  9. class Database : public QObject {
  10.     Q_OBJECT
  11.  
  12. public:
  13.     Database(QObject *parent = 0);
  14.     ~Database();
  15.  
  16.     MainWindow *Gui;
  17.  
  18. private:
  19.     // Search Bar
  20.     void prepareList();
  21.     void updateListWidget();
  22.  
  23.     // Records
  24.     void setupDatabase();
  25.     void setupModel();
  26.     void setupMapper();
  27.     void addMapping();
  28.     void doSave();
  29.  
  30.  
  31. public:
  32.  
  33. private:
  34.     // Records
  35.     QSqlDatabase recordsDB;
  36.     QSqlQuery recordsQuery;
  37.     QSqlTableModel *recordsModel;
  38.     QDataWidgetMapper *recordsMapper;
  39.  
  40.     // Search Bar SQL Related Members
  41.     QSqlDatabase searchDB;
  42.     QSqlQuery searchQuery;
  43.  
  44.     QStringList namesList;
  45.     QStringList iqamasList;
  46.     QStringList passportsList;
  47.  
  48.     QStringList tempNamesList;
  49.     QStringList tempIqamasList;
  50.     QStringList tempPassportsList;
  51.  
  52.     // Misc.
  53.     enum CurrentStatus {Browsing, Adding, Editing};
  54.  
  55. private slots:
  56.     // Search Bar
  57.     void filterLists(QString currentNumber);
  58.     void resetForm();
  59.     void saveRecord();
  60.  
  61.  
  62. };
  63.  
  64. #endif // DATABASE_H
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See lines: 10, 18 & 23

Part of (Database.cpp)
Qt Code: 
  1. Database::Database(QObject *parent) : QObject(parent) {
  2.     // The GUI
  3.     Gui = new MainWindow;
  4.     Gui->show();
  5.  
  6.     // Records
  7.     setupDatabase();
  8.     setupModel();
  9.     setupMapper();
  10.     //saveRecord(); from here I get the text normally.
  11.  
  12.     // Search Bar
  13.     prepareList();
  14.  
  15.     // Search Button Connection
  16.     connect(Gui->ui->leSearch, SIGNAL(textChanged(QString)), this, SLOT(filterLists(QString)));
  17.     connect(Gui->ui->actionNew, SIGNAL(triggered()), this, SLOT(resetForm()));
  18.     connect(Gui->ui->actionSave, SIGNAL(triggered()), this, SLOT(saveRecord())); // from here I cannot get the text, I just get empty string "".
  19. } // Database(QObject *parent = 0)
  20.  
  21. // Slot
  22. void Database::saveRecord() {
  23.     // if i call this slot through a connection "connect() see line 18" all these QLineEdits return empty string but actually the are filled with information.
  24.     QString voucherTypeEst = QString(Gui->ui->radioEst->isChecked());
  25.     QString voucherTypeCo = QString(Gui->ui->radioCo->isChecked());
  26.     QString voucherTypeGov = QString(Gui->ui->radioGov->isChecked());
  27.     QString firstARName = Gui->ui->leARFirstName->text();
  28.     QString firstENName = Gui->ui->leENFirstName->text();
  29.     QString iqamaNumber = Gui->ui->leIqamaNumber->text();
  30.     QString nationality = Gui->ui->leNationality->text();
  31.     QString job = Gui->ui->leJob->text();
  32.     QString religion = Gui->ui->leReligion->text();
  33.     QString passportNumber = Gui->ui->lePassportNumber->text();
  34.     QString issuePlace = Gui->ui->leIssuePlace->text();
  35.     QString entranceNumber = Gui->ui->leEntryNumber->text();
  36.     QString entrancePort = Gui->ui->leEntryPort->text();
  37.     QString iqamaDate = Gui->ui->leIqamaExpiryDate->text();
  38.     QString birthdayDate = Gui->ui->leBirthdayDate->text();
  39.     QString passportIssueDate = Gui->ui->lePassportIssueDate->text();
  40.     QString passportExpiryDate = Gui->ui->lePassportExpiryDate->text();
  41.     QString entryDate = Gui->ui->leEntryDate->text();
  42.     QString voucherTypeSng = QString(Gui->ui->radioSng->isChecked());
  43.     QString voucherName = Gui->ui->leCurrentVoucherName->text();
  44.     QString voucherNumber = Gui->ui->leCurrentVoucherNumber->text();
  45.     QString voucherAddress = Gui->ui->leCurrentVoucherAddress->text();
  46.     QString voucherPhone = Gui->ui->leCurrentVoucherPhone->text();
  47.     QString fatherARName = Gui->ui->leARFatherName->text();
  48.     QString grandARName = Gui->ui->leARGrandName->text();
  49.     QString familyARName = Gui->ui->leARFamilyName->text();
  50.     QString fatherENName = Gui->ui->leENFatherName->text();
  51.     QString grandENName = Gui->ui->leENGrandName->text();
  52.     QString familyENName = Gui->ui->leENFamilyName->text();
  53. }
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