Ytukyg

I am designing a major user interface with several fields and functions.
However in order to shrink the problem I created a small application with 4 columns: name, image, dataDatabase, dateTime.

I have a MainWindow with a QTableView, as soon as I right click inside the QTableView an AddItemDialog opens up with:

1. nameLineEdit


2. ImLineEdit


3. imageLineEdit


4. dateTimeEdit

The issue that I have is that I can't find a way to accept the 4) dateTimeEdit through the AddItemDialog.

I didn't "go to slot" of the dateTimeEdit as I didn't think that I had to.
I think that I am not doing the proper conversion for the date and time but please advise on what the issue might be.

I am including the most important parts of the application below with the related description of the procedure I followed:

I created an Item with the fields item.h:

class Item

{

public:

    Item(const double dateTime,

         const QString &name = "", const QString &image = "",

         const QByteArray &imagesData = QByteArray());

    QString name() const { return mName; }

    QString image() const { return mImage; }

    QByteArray imagesData() const { return mImagesData; }

    double dateTime() const { return mDateTime; }

private:

    QString mName;

    QString mImage;

    QByteArray mImagesData;

    double mDateTime;

};

and its related item.cpp

Item::Item(const double dateTime,

           const QString &name, const QString &image,

           const QByteArray &imagesData)

{

    mName = name;

    mImage = image;

    mImagesData = imagesData;

    mDateTime = dateTime;

}

I created a database.h table that will contain the parameters as follows:

class dataBase : public QObject

{

    Q_OBJECT

public:

    explicit dataBase(QObject *parent = nullptr);

    bool inizializationDataBase(const QString &nameDataBase);

    bool configureDataBase();

    QString getError() const { return mError; }

    bool addItem(const Item &item);

private:

    QSqlDatabase mDatabase;

    QString mError;

};

And its related database.cpp file - I am only including the most important piece of the code for this file:

#define CREATE_TABLE 

     " CREATE TABLE IF NOT EXISTS Fish_Table" 

     " (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL" 

     ", name TEXT NOT NULL" 

     ", image TEXT NOT NULL" 

     ", dataDataBase BLOB NOT NULL" 

     ", dateTime DOUBLE NOT NULL)"



dataBase::dataBase(QObject *parent)

    : QObject(parent)

{

}



bool dataBase::inizializationDataBase(const QString &nameDataBase) {

    // code

}



bool dataBase::addItem(const Item &item) {

    QSqlQuery q;

    q.prepare("INSERT INTO Fish_Table (name, image, dataDatabase, dateTime) VALUES (?,?,?,?)");

    q.addBindValue(item.name());

    q.addBindValue(item.image());

    q.addBindValue(item.imagesData());

    q.addBindValue(item.dateTime());

    bool ok = q.exec();

    if (!ok) {

        mError = q.lastError().text();

    }

    return ok;

}

and finally the AddItemDialog.h and AddItemDialog.cpp that contains the fields I am trying to pass to the QTableView of the MainWindow.

AddItemDialog.h

namespace Ui

{

class AddItemDialog;

}



class AddItemDialog : public QDialog

{

    Q_OBJECT

public:

    explicit AddItemDialog(QWidget *parent = nullptr);

    ~AddItemDialog();

    Item item() const { return mItem; }

private slots:

    void on_toolButton_clicked();

    void on_buttonBox_accepted();

    void on_buttonBox_rejected();

private:

    Ui::AddItemDialog *ui;

    Item mItem;

};

AddItemDialog.cpp

AddItemDialog::AddItemDialog(QWidget *parent)

    : QDialog(parent)

    , ui(new Ui::AddItemDialog)

{

    ui->setupUi(this);

    auto fileSystemModel = new QFileSystemModel(this);

    fileSystemModel->setRootPath(QDir::rootPath());

    ui->imageLineEdit->setCompleter(new QCompleter(fileSystemModel,this));

    QDateTime dateTime;

    dateTime.setDate(QDate::currentDate());

}



AddItemDialog::~AddItemDialog()

{

    delete ui;

}



void AddItemDialog::on_toolButton_clicked()

{

    auto nameDataBase = QFileDialog::getOpenFileName(this, "Open Images", QDir::rootPath(),

                      "Images (*.png *.jpg *jpeg *.tif *.tiff);;Any type (*.*)");

    ui->imageLineEdit->setText(nameDataBase);

}



void AddItemDialog::on_buttonBox_accepted()

{

    QFile dataBase(ui->imageLineEdit->text());

    if (!dataBase.open(QIODevice::ReadOnly)) {

        QMessageBox::critical(this, "Error", dataBase.errorString());

        return;

    }

    mItem = Item(ui->nameLineEdit->text(),

                 ui->ImLineEdit->text(),dataBase.readAll());

    dataBase.close();

    accept();

}

So to recap:

1. I am not sure I provided the right format to the QDateTime conversion on the Item.h / Item.cpp and database.h / database.cpp




2. I am not sure how to pass the QDateTime from the AddItemDialog.cpp to the MainWindow

Additionally on the AddItemDialog.cpp I am having the following error right on the beginning:
Constructor for AddItemDialog must explicitly initialize the member mItem which does not have a default constructor

Thanks for providing information on this issue that I have been having for a couple of days.

Use DATETIME as a field and use QDateTime directly:

#define CREATE_TABLE 

     " CREATE TABLE IF NOT EXISTS Fish_Table" 

     " (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL" 

     ", name TEXT NOT NULL" 

     ", image TEXT NOT NULL" 

     ", dataDataBase BLOB NOT NULL" 

     ", dateTime DATETIME NOT NULL)" /// <---

Then change item:

item.h

#ifndef ITEM_H

#define ITEM_H

#include <QDateTime>

#include <QString>



class Item

{

public:

    Item(const QDateTime & dateTime=QDateTime::currentDateTime(),

         const QString &name = "", const QString &image = "",

         const QByteArray &imagesData = QByteArray());

    QString name() const { return mName; }

    QString image() const { return mImage; }

    QByteArray imagesData() const { return mImagesData; }

    QDateTime dateTime() const { return mDateTime; }

private:

    QString mName;

    QString mImage;

    QByteArray mImagesData;

    QDateTime mDateTime;

};



#endif // ITEM_H

item.cpp

#include "item.h"



Item::Item(const QDateTime &dateTime,

           const QString &name, const QString &image,

           const QByteArray &imagesData):

    mName(name),

    mImage(image),

    mImagesData(imagesData),

    mDateTime(dateTime)

{

}

And then you pass the QDateTime directly as indicated:

void AddItemDialog::on_buttonBox_accepted()

{

    QFile dataBase(ui->imageLineEdit->text());

    if (!dataBase.open(QIODevice::ReadOnly)) {

        QMessageBox::critical(this, "Error", dataBase.errorString());

        return;

    }

    mItem = Item(ui->dateTimeEdit->dateTime(),

                 ui->nameLineEdit->text(),

                 ui->ImLineEdit->text(),

                 dataBase.readAll());

    dataBase.close();

    accept();

}