using an isntance of QSqlDatabase for connection defiinition

[anda_skoa]

Now that you point it out that makes sense will move open() call inside if() statement, since the if statement is checking for validation would you also pass the instance to QSqlQuery inside the if() block?

No, I would leave the QSqlQuery outside.

do I need to close or remove the database?

No, you should be able to keep more than one connection at any given time.


Now I need help fixing my function in my other class

QSqlQuery selectQuery("SELECT id, userName, eventMessage, dateTime FROM userlogevents");

QSqlQuery selectQuery("SELECT id, userName, eventMessage, dateTime FROM userlogevents");

To copy to clipboard, switch view to plain text mode 

You likely want to use the m_selectDataBase for this query, no?

while (selectQuery.next()){
        //---Instance of userEventLogMsg Class Struct---//
        userEventLogMsg msg;
        //---Instance of userEventlog Class---//
        UserEventLog model;
        //---Add query data to the msg class struct---//
        msg.id = selectQuery.value(0).toString();
        msg.username = selectQuery.value(1).toString();
        msg.eventmessage = selectQuery.value(2).toString();
        msg.datetime = selectQuery.value(3).toString();
        //---Use model object to access an call addEvent()---//
        model.addEvent(msg);
    }

while (selectQuery.next()){
        //---Instance of userEventLogMsg Class Struct---//
        userEventLogMsg msg;
        //---Instance of userEventlog Class---//
        UserEventLog model;
        //---Add query data to the msg class struct---//
        msg.id = selectQuery.value(0).toString();
        msg.username = selectQuery.value(1).toString();
        msg.eventmessage = selectQuery.value(2).toString();
        msg.datetime = selectQuery.value(3).toString();
        //---Use model object to access an call addEvent()---//
        model.addEvent(msg);
    }

To copy to clipboard, switch view to plain text mode 

This doesn't look at all what I assume you want.
This creates a new model instance in every loop iteration, adds one record and then destroys the model (when it goes out of scope).

Cheers,
_

[jfinn88]

No, I would leave the QSqlQuery outside.

Okay, That makes sense played with it and I declare it before the if() block.

No, you should be able to keep more than one connection at any given time.

Okay, so I'm fine with leaving conn1, and conn2 connected.

You likely want to use the m_selectDataBase for this query, no?

I can pass it with the sql statement correct ?

QSqlQuery selectQuery("SELECT id, userName, eventMessage, dateTime FROM userlogevents", m_selectDataBase);

QSqlQuery selectQuery("SELECT id, userName, eventMessage, dateTime FROM userlogevents", m_selectDataBase);

To copy to clipboard, switch view to plain text mode 

This doesn't look at all what I assume you want.
This creates a new model instance in every loop iteration, adds one record and then destroys the model (when it goes out of scope).

you are correct I do not want to create a new object every time it goes threw while loop moved object declaration above while loop. Will calling addEvent () in the while loop be fine or should it be called once after the while loop is done putting data in struct?

I’m still little confused how the virtual functions get called... from my understanding is when the instance variable of my class is created (to pass the model to C++ by setting rootContext item) it makes a call to the constructor and when the constructor gets called the virtual functions get called (trying to clear any confuse I still have with models and virtual functions) ?

//---Instance of userEventLogMsg Class Struct---//
        userEventLogMsg msg;
 
    while (selectQuery.next()){
        //---Add query data to the userEventLogMsg class struct---//
        msg.id = selectQuery.value(0).toString();
        msg.username = selectQuery.value(1).toString();
        msg.eventmessage = selectQuery.value(2).toString();
        msg.datetime = selectQuery.value(3).toString();
        //---Use model object to access an call addEvent()---//
        addEvent(msg);
    }

//---Instance of userEventLogMsg Class Struct---//
        userEventLogMsg msg;

    while (selectQuery.next()){
        //---Add query data to the userEventLogMsg class struct---//
        msg.id = selectQuery.value(0).toString();
        msg.username = selectQuery.value(1).toString();
        msg.eventmessage = selectQuery.value(2).toString();
        msg.datetime = selectQuery.value(3).toString();
        //---Use model object to access an call addEvent()---//
        addEvent(msg);
    }

To copy to clipboard, switch view to plain text mode 

Also I want to call dbConnect and selectQuery() methods from QML (button click)
in the header file I declare the function as Q_INVOKABLE now I know I could register the QML type to make the class accessible in QML and import it in the QML to call the function but I think I would have to make the class global object? is there a simpler way to do this ?

I have seen an example with Q_INVOKABLE and setting the context property, but I get confused on what engine object/class I need to use to set it. I don't quit understand the rootContext methodology yet and have a QML engine already defined and in use that I don't want to mess up, Im not sure if replacing what is currently on the engine stack is the right way todo it? or if using a new engine object is correct... would I need to create an instance object of a qml engine in my userEvetnLog class? (how can I tell what object this is pointing to?)

mUserEventLogModel = new UserEventLog();
    m_QmlEngine->rootContext()->setContextProperty("UserEventLog", mUserEventLogModel);

mUserEventLogModel = new UserEventLog();
    m_QmlEngine->rootContext()->setContextProperty("UserEventLog", mUserEventLogModel);

To copy to clipboard, switch view to plain text mode 

In my QML I call my funtions

Action {
        id: action_userEventLogBtn
        enabled:!inSequence
        onTriggered:{
             //----Code to Load User Event Database into tableView-----//
            input_loader.filename = ""
            UserEventLog.dbConnect();
            UserEventLog.sqlSelect();
            weld_view.state = "USEREVENT"
            onLoaded: console.log("User Event Log");

Action {
        id: action_userEventLogBtn
        enabled:!inSequence
        onTriggered:{
             //----Code to Load User Event Database into tableView-----//
            input_loader.filename = ""
            UserEventLog.dbConnect();
            UserEventLog.sqlSelect();
            weld_view.state = "USEREVENT"
            onLoaded: console.log("User Event Log");

To copy to clipboard, switch view to plain text mode 

update: Okay I got my functions working in QML used previously defined QQmlEngine and instance of UserEventLog class that was used to make my model available to QML

update: made a stupid mistake when calling my addEvent function and now just realized it. Was getting a segfault fixed by removing UserEventLog object and just calling addEvent since Im in the class.

[anda_skoa]

I can pass it with the sql statement correct ?

Yes.

Will calling addEvent () in the while loop be fine or should it be called once after the while loop is done putting data in struct?

In every loop iteration.
You can basically keep your code, but instead of calling addEvent() on a different model you just call addEvent() of the current object.

I’m still little confused how the virtual functions get called... from my understanding is when the instance variable of my class is created (to pass the model to C++ by setting rootContext item) it makes a call to the constructor and when the constructor gets called the virtual functions get called (trying to clear any confuse I still have with models and virtual functions) ?

When you create an object, the constructor for that class is called.

Once the object is created, calls to virtual functions always end up in the most specific subclass.
E.g. if you overwrite roleNames() a call to roleNames() will end up calling your implementation.

Also I want to call dbConnect and selectQuery() methods from QML (button click)

For what purpose?
I can see a use case of re-running the query on demand, but dbConnect?
dbConnect() is really internal, no? It has to be called before database access happens, so the class itself should know when to call it.

in the header file I declare the function as Q_INVOKABLE now I know I could register the QML type to make the class accessible in QML and import it in the QML to call the function but I think I would have to make the class global object? is there a simpler way to do this ?

That is unnecessary.
Q_INVOKABLE methods and slots are already accessible as functions on an object set as a context property.
Registration of a type is only necessary if instances of that type need to be created from QML or if it has enum definitions where the QML code should be able to use the names.

I have seen an example with Q_INVOKABLE and setting the context property, but I get confused on what engine object/class I need to use to set it.

You don't have to change anything in your code.

Cheers,
_

[jfinn88]

Thank you for all the help anda_skoa,
Model seems to be working good now I will posted updated code
I'm now wanting to add some functionality to my tableView, Like to be able to search by date and userName... I want to pass text values back to my c++ function a would like to use the signal and slot mechanism to perform this action. However I get lost with what Object I need to pass the QObject::connect() method, for it to work.
I created two signals and two slots one for the date text field in qml and the other is for the userName text field in qml.
in C++ I created to slots to receive the qml signals and to out put the text data passed to the console using a debug() method.
I'm little confused on where to place the QObject::connect method in my project... main.cpp or sqliteModel.cpp in the constructor ?
I am unsure what objects to pass the connect() method for the signal to receive the slot ?
I would also Like to create a table in the database for each separate day for user event logging and delete old tables after 30 days
here is my code: (had to remove functions for model in cpp file to get it to fit)

=========== main.qml===============

import QtQuick 2.5
import QtQuick.Layouts 1.1
import QtQuick.Controls 1.3
import QtQuick.Window 2.2
import QtQuick.Dialogs 1.2
import QtQuick.Layouts 1.1
import QtQuick.Controls 1.4
 
Window {
    signal submitDateText(string text)
    signal submitUserNameText(string text)
    visible: true
    width: 760
    height: 450
    title: "User Event Log"
    TableView {
        width: 750;
        height: 350;
        anchors.centerIn: parent;
        horizontalScrollBarPolicy: 0
        frameVisible: true
        model: sqliteModel
        TableViewColumn {
                role: "id"
                title: "id"
                width: 100
            }
            TableViewColumn {
                role: "userName"
                title: "User Name"
                width: 200
            }
            TableViewColumn {
                role: "eventMessage"
                title: "Event Message"
                width: 200
            }
            TableViewColumn {
                role: "dateTime"
                title: "Date Time"
                width: 200
            }
    }
    RowLayout {
        id: row1
        x: 201
        y: 403
        anchors.horizontalCenter: parent.horizontalCenter;
        anchors.bottom: parent.bottom
        width: 750
        height: 47;
        clip: false
        opacity: 0.9
        Button {
            id: load_btn
            text: qsTr("Load")
            MouseArea{
                anchors.fill: parent
                onClicked: {
                    sqliteModel.dbConnect();
                    sqliteModel.sqlSelect();
                }
            }
        }
        Label {
            id: userNameLabel
            text: qsTr("User Name")
        }
        TextField {
            id: userNameTextField
            placeholderText: qsTr("User Name")
        }
        Label {
            id: dateLabel
            width: 39
            height: 17
            text: qsTr("Date")
        }
        TextField {
            id: dateTextField
            width: 125
            height: 25
            placeholderText: qsTr("mm//dd/yyyy")
        }
        Button {
            id: searchBtn
            text: qsTr("Search")
            MouseArea{
                anchors.fill: parent
                onClicked: {
                    // emit the submitTextField signal
                    submitDateText(dateTextField.text);
                    submitUserNameText(userNameTextField.text);
                }
            }
        }
        Button {
            id: exit_btn
            text: qsTr("Exit")
            MouseArea{
                anchors.fill: parent
                onClicked: close();
            }
        }
    }
}

import QtQuick 2.5
import QtQuick.Layouts 1.1
import QtQuick.Controls 1.3
import QtQuick.Window 2.2
import QtQuick.Dialogs 1.2
import QtQuick.Layouts 1.1
import QtQuick.Controls 1.4

Window {
    signal submitDateText(string text)
    signal submitUserNameText(string text)
    visible: true
    width: 760
    height: 450
    title: "User Event Log"
    TableView {
        width: 750;
        height: 350;
        anchors.centerIn: parent;
        horizontalScrollBarPolicy: 0
        frameVisible: true
        model: sqliteModel
        TableViewColumn {
                role: "id"
                title: "id"
                width: 100
            }
            TableViewColumn {
                role: "userName"
                title: "User Name"
                width: 200
            }
            TableViewColumn {
                role: "eventMessage"
                title: "Event Message"
                width: 200
            }
            TableViewColumn {
                role: "dateTime"
                title: "Date Time"
                width: 200
            }
    }
    RowLayout {
        id: row1
        x: 201
        y: 403
        anchors.horizontalCenter: parent.horizontalCenter;
        anchors.bottom: parent.bottom
        width: 750
        height: 47;
        clip: false
        opacity: 0.9
        Button {
            id: load_btn
            text: qsTr("Load")
            MouseArea{
                anchors.fill: parent
                onClicked: {
                    sqliteModel.dbConnect();
                    sqliteModel.sqlSelect();
                }
            }
        }
        Label {
            id: userNameLabel
            text: qsTr("User Name")
        }
        TextField {
            id: userNameTextField
            placeholderText: qsTr("User Name")
        }
        Label {
            id: dateLabel
            width: 39
            height: 17
            text: qsTr("Date")
        }
        TextField {
            id: dateTextField
            width: 125
            height: 25
            placeholderText: qsTr("mm//dd/yyyy")
        }
        Button {
            id: searchBtn
            text: qsTr("Search")
            MouseArea{
                anchors.fill: parent
                onClicked: {
                    // emit the submitTextField signal
                    submitDateText(dateTextField.text);
                    submitUserNameText(userNameTextField.text);
                }
            }
        }
        Button {
            id: exit_btn
            text: qsTr("Exit")
            MouseArea{
                anchors.fill: parent
                onClicked: close();
            }
        }
    }
}

To copy to clipboard, switch view to plain text mode 

=========== main.cpp===============

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QSqlDatabase>
#include "sqlitemodel.h"
#include <QUrl>
 
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    sqliteModel *model = new sqliteModel;
    QQmlApplicationEngine engine;
    QQmlContext *contxt = engine.rootContext();
    contxt->setContextProperty("sqliteModel", model);
    engine.load(QUrl("qrc:/main.qml"));
    return app.exec();
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QSqlDatabase>
#include "sqlitemodel.h"
#include <QUrl>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    sqliteModel *model = new sqliteModel;
    QQmlApplicationEngine engine;
    QQmlContext *contxt = engine.rootContext();
    contxt->setContextProperty("sqliteModel", model);
    engine.load(QUrl("qrc:/main.qml"));
    return app.exec();
}

To copy to clipboard, switch view to plain text mode 

=========== sqliteModel.cpp==========

#include "sqlitemodel.h"
 
sqliteModel::sqliteModel(QObject *parent):QAbstractListModel(parent)
{
    // connect our QML signal to our C++ slot
    QObject::connect(/*QMLObject(?)*/, SIGNAL(submitDateText(QString)), this, SLOT(searchDateText(QString)));
}
 
sqliteModel::~sqliteModel()
{
}
 
void sqliteModel::createDailyTable()
{
    dbConnect();
    int addOne;
    QSqlQuery createTableQry(m_selectDataBase);
    createTableQry.prepare("CREATE TABLE userlogevents1 AS SELECT * FROM userlogevents WHERE 0");
    createTableQry.exec();
    m_selectDataBase.close();
}
 
void sqliteModel::deleteDailyTable()
{
    dbConnect();
    QSqlQuery selectTables(m_selectDataBase);
    //---Selects all tables older than 30 days in database | Gets date created---//
    selectTables.prepare("SELECT usereventlog, create_date FROM sys.tables WHERE DATEDIFF(day, create_date, getdate()) > 30");
    selectTables.exec();
    QString selectTableResult;
    selectTableResult = selectTables.value(0).toString();
    selectTableResult.append(selectTables.value(1).toString());
    selectTableResult.append(selectTables.value(2).toString());
    qDebug() << selectTableResult;
 
    //--- If the table is older than 30 days drop it---//
        QSqlQuery deleteTableQry(m_selectDataBase);
        deleteTableQry.prepare("DROP TABLE userlogevetns");
        deleteTableQry.exec();
        m_selectDataBase.close();
}
 
void sqliteModel::searchDateFcn(QString dateText)
{
    dbConnect();
    QSqlQuery searchDateQry(m_selectDataBase);
    searchDateQry.prepare("SELECT id, userName, eventMessage, dateTime FROM usereventlog WHERE userName = "+dateText);
    searchDateQry.exec();
    m_selectDataBase.close();
}
 
void sqliteModel::searchUserNameFcn(QString userNameText)
{
    dbConnect();
    QSqlQuery searchDateQry(m_selectDataBase);
    searchDateQry.prepare("SELECT id, userName, eventMessage, dateTime FROM usereventlog WHERE userName = "+ userNameText);
    searchDateQry.exec();
    m_selectDataBase.close();
}
 
void sqliteModel::searchDateText(const QString &dateText)
{
    qDebug() << "c++: sqliteModel::searchDateText:" << dateText;
}
 
void sqliteModel::searchUserNameText(const QString &userNameText)
{
    qDebug() << "c++: sqliteModel::searchUserNameText:" << userNameText;
}

#include "sqlitemodel.h"

sqliteModel::sqliteModel(QObject *parent):QAbstractListModel(parent)
{
    // connect our QML signal to our C++ slot
    QObject::connect(/*QMLObject(?)*/, SIGNAL(submitDateText(QString)), this, SLOT(searchDateText(QString)));
}

sqliteModel::~sqliteModel()
{
}

void sqliteModel::createDailyTable()
{
    dbConnect();
    int addOne;
    QSqlQuery createTableQry(m_selectDataBase);
    createTableQry.prepare("CREATE TABLE userlogevents1 AS SELECT * FROM userlogevents WHERE 0");
    createTableQry.exec();
    m_selectDataBase.close();
}

void sqliteModel::deleteDailyTable()
{
    dbConnect();
    QSqlQuery selectTables(m_selectDataBase);
    //---Selects all tables older than 30 days in database | Gets date created---//
    selectTables.prepare("SELECT usereventlog, create_date FROM sys.tables WHERE DATEDIFF(day, create_date, getdate()) > 30");
    selectTables.exec();
    QString selectTableResult;
    selectTableResult = selectTables.value(0).toString();
    selectTableResult.append(selectTables.value(1).toString());
    selectTableResult.append(selectTables.value(2).toString());
    qDebug() << selectTableResult;

    //--- If the table is older than 30 days drop it---//
        QSqlQuery deleteTableQry(m_selectDataBase);
        deleteTableQry.prepare("DROP TABLE userlogevetns");
        deleteTableQry.exec();
        m_selectDataBase.close();
}

void sqliteModel::searchDateFcn(QString dateText)
{
    dbConnect();
    QSqlQuery searchDateQry(m_selectDataBase);
    searchDateQry.prepare("SELECT id, userName, eventMessage, dateTime FROM usereventlog WHERE userName = "+dateText);
    searchDateQry.exec();
    m_selectDataBase.close();
}

void sqliteModel::searchUserNameFcn(QString userNameText)
{
    dbConnect();
    QSqlQuery searchDateQry(m_selectDataBase);
    searchDateQry.prepare("SELECT id, userName, eventMessage, dateTime FROM usereventlog WHERE userName = "+ userNameText);
    searchDateQry.exec();
    m_selectDataBase.close();
}

void sqliteModel::searchDateText(const QString &dateText)
{
    qDebug() << "c++: sqliteModel::searchDateText:" << dateText;
}

void sqliteModel::searchUserNameText(const QString &userNameText)
{
    qDebug() << "c++: sqliteModel::searchUserNameText:" << userNameText;
}

To copy to clipboard, switch view to plain text mode 

=========== sqliteModel.h===============

#ifndef SQLITEMODEL_H
#define SQLITEMODEL_H
 
#include <assert.h>
#include <list>
#include <QList>
#include <QColor>
#include <QObject>
#include <QDebug>
#include <QString>
#include <QFileInfo>
#include <QDateTime>
#include <QQmlError>
#include <QQmlApplicationEngine>
#include <QQmlEngine>
#include <QQmlContext>
#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QtSql/QSqlError>
#include <QtSql/QSqlRecord>
#include <QModelIndex>
#include <QAbstractListModel>
 
struct userEventLogMsg{
  QString id;
  QString username;
  QString eventmessage;
  QString datetime;
};
 
class sqliteModel:public QAbstractListModel
{
    Q_OBJECT
public:
    explicit sqliteModel(QObject *parent = 0);
    ~sqliteModel();
    enum userEventRoles {idRole= Qt::UserRole + 220, nameRole, msgRole, dateRole};
    int rowCount(const QModelIndex & parent) const;
    QHash<int, QByteArray> roleNames() const;
    QVariant data(const QModelIndex &index, int role=Qt::DisplayRole) const;
    Q_INVOKABLE void addEvent(const userEventLogMsg &msg);
    Q_INVOKABLE void dbConnect();
    Q_INVOKABLE void sqlSelect();
    void createDailyTable();
    void deleteDailyTable();
    void searchDateFcn(QString userDateText);
    void searchUserNameFcn(QString userNameText);
public slots:
    void searchDateText(const QString &dateIn);
    void searchUserNameText(const QString &userNameIn);
private:
    QList<userEventLogMsg> m_msgList;
    QSqlDatabase m_selectDataBase;
    QSqlQuery m_selectQuery;
};

#ifndef SQLITEMODEL_H
#define SQLITEMODEL_H

#include <assert.h>
#include <list>
#include <QList>
#include <QColor>
#include <QObject>
#include <QDebug>
#include <QString>
#include <QFileInfo>
#include <QDateTime>
#include <QQmlError>
#include <QQmlApplicationEngine>
#include <QQmlEngine>
#include <QQmlContext>
#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QtSql/QSqlError>
#include <QtSql/QSqlRecord>
#include <QModelIndex>
#include <QAbstractListModel>

struct userEventLogMsg{
  QString id;
  QString username;
  QString eventmessage;
  QString datetime;
};

class sqliteModel:public QAbstractListModel
{
    Q_OBJECT
public:
    explicit sqliteModel(QObject *parent = 0);
    ~sqliteModel();
    enum userEventRoles {idRole= Qt::UserRole + 220, nameRole, msgRole, dateRole};
    int rowCount(const QModelIndex & parent) const;
    QHash<int, QByteArray> roleNames() const;
    QVariant data(const QModelIndex &index, int role=Qt::DisplayRole) const;
    Q_INVOKABLE void addEvent(const userEventLogMsg &msg);
    Q_INVOKABLE void dbConnect();
    Q_INVOKABLE void sqlSelect();
    void createDailyTable();
    void deleteDailyTable();
    void searchDateFcn(QString userDateText);
    void searchUserNameFcn(QString userNameText);
public slots:
    void searchDateText(const QString &dateIn);
    void searchUserNameText(const QString &userNameIn);
private:
    QList<userEventLogMsg> m_msgList;
    QSqlDatabase m_selectDataBase;
    QSqlQuery m_selectQuery;
};

To copy to clipboard, switch view to plain text mode 

I was able to pass the text form qml to my cpp slot by expose Qt slot to QML element. By using the context property I set for my model to be exposed to QML.

now my searchDateText fcn and searchUserName fcn can be called in qml by:

Button {
            id: searchBtn
            text: qsTr("Search")
            MouseArea{
                anchors.fill: parent
                onClicked: {
                    sqliteModel.searchDateText(dateTextField.text);
                    sqliteModel.searchUserNameText(userNameTextField.text);
                }
            }
        }

Button {
            id: searchBtn
            text: qsTr("Search")
            MouseArea{
                anchors.fill: parent
                onClicked: {
                    sqliteModel.searchDateText(dateTextField.text);
                    sqliteModel.searchUserNameText(userNameTextField.text);
                }
            }
        }

To copy to clipboard, switch view to plain text mode 

(?) I did the same for my dbConnect and sqlSelect fcns however I have to include Q_INVOKABLE when intializing them in the header file or for some reason or I cant call them in QML with out the Q_INVOKABLE keyword but my searchDateText & searchUserNameText fucntions do??? -> error: Property 'dbConnect' of object sqliteModel() is not a function

I would like to pass the QML text using a QML signal to a CPP slot using the QObject::connect() mainly for learning purposes... The objects that I need to pass the connect() method make more sense now, I need to pass a QML object for the qml signal() and pass a class object (sqliteModel) for the slot(), if I use the connect() method in my cpp class (in the constructor) I can use keyword "this" for the CPP object for the connect method?

[anda_skoa]

Like to be able to search by date and userName... I want to pass text values back to my c++ function a would like to use the signal and slot mechanism to perform this action. However I get lost with what Object I need to pass the QObject::connect() method, for it to work.
I created two signals and two slots one for the date text field in qml and the other is for the userName text field in qml.
in C++ I created to slots to receive the qml signals and to out put the text data passed to the console using a debug() method.
I'm little confused on where to place the QObject::connect method in my project... main.cpp or sqliteModel.cpp in the constructor ?
I am unsure what objects to pass the connect() method for the signal to receive the slot ?

You just call the slots directly.
Slots, like Q_INVOKABLE methods, can be called from QML.

Your QML code suggests that you want to pass both date and user name when clicking search, so a single slot with two arguments will do.

I would also Like to create a table in the database for each separate day for user event logging and delete old tables after 30 days
here is my code: (had to remove functions for model in cpp file to get it to fit)

I guess you have two options:
- use an additional table that maps from a date to a table name for that date
- encode the date in the table name

I was able to pass the text form qml to my cpp slot by expose Qt slot to QML element. By using the context property I set for my model to be exposed to QML.

Yes, exactly, though you probably want to use a single method if both inputs are to be used in the search.

(?) I did the same for my dbConnect and sqlSelect fcns however I have to include Q_INVOKABLE when intializing them in the header file or for some reason or I cant call them in QML with out the Q_INVOKABLE keyword but my searchDateText & searchUserNameText fucntions do??? -> error: Property 'dbConnect' of object sqliteModel() is not a function

They have to be slots or Q_INVOKABLE.

From the QML side's point of view there is actually no difference.
It is customary though to use Q_INVOKABLE when methods return something, as slots usually don't do that.

In your case all methods you have so far could be slots.

I would like to pass the QML text using a QML signal to a CPP slot using the QObject::connect() mainly for learning purposes...

I would advise against that, you would put effort into learning something that you then don't want to use.
I.e. you don't want your C++ code to be dependent on specific QML objects or their specific signals.

The objects that I need to pass the connect() method make more sense now, I need to pass a QML object for the qml signal() and pass a class object (sqliteModel) for the slot()

Yes, but you really don't want to do that.

if I use the connect() method in my cpp class (in the constructor) I can use keyword "this" for the CPP object for the connect method?

Theoretically yes, but the QML scene has not been loaded yet when the model's constructor runs, so the connect would have to happen from outside after both model and QML objects exist.

Cheers,
_