Missing Object Relation Mapping realization in Qt framework

This library presents you a simple way to work with database tables like some script languages do.

Features

• easy use and integrate with your project
• full CRUD support with ActiveRecord pattern
• deep integration with Qt
• easy SQL select/insert/update/delete manipulation

Installation

1. Using qpm package manager: $ qpm install pro.zhukva.orm-qt

2. Manually: add include(<path-to-lib>/include.pri) in your *.pro file

Example code

Let we have created a table foobar with fields foo and bar:

// ... other Qt includes
#include "activerecord.h"

// create empty record
orm::ActiveRecord ar_obj("foobar");

// set values
ar_obj.setValue("foo", "this is test string");
ar_obj.setValue("bar", 123);

// save this record
bool ok = ar_obj.save();

// get result primary key
QVariant pk = ar_obj.primaryKey().value();

// load second obj
orm::ActiveRecord ar2_obj("foobar");
ar2_obj.load(pk);

// get value
int val = ar2_obj.value("bar").toInt();

// remove object
ar2_obj.remove();

Notes

"Where are other features?" you can ask. As I noted before, this is light library, all your need exists in Qt already.

For example you need to select many records. Your example code:

QSqlQuery qr = orm::Query::select("foobar").where("id > ?", 100).make();
if (qr.exec()) {
        while (qr.next()) {
                orm::ActiveRecord ar_obj("foobar");
                ar_obj.setRecord(qr.record());
                ar_obj.setValue("foo", "new_foo_value");
                ar_obj.save();
        }
}

As you can see, any wrapper only complicate code. orm-qt aim to efficiently manipulate standard Qt classes and try not to reinvent the wheel. Another example, you need to create some model. Your example code:

// ...
QTableView *view = new QTableView;
QSqlQueryModel *model = new QSqlQueryModel;
// ...
QSqlQuery qr = orm::Query::select("foobar").where("id > ?", 100).make();
if (qr.exec()) {
        model->setQuery(qr);
        view->setModel(model);
}
// get ActiveRecord from 1st row
QSqlRecord rec = model.record(0);
if (!rec.isEmpty()) {
        orm::ActiveRecord ar_obj("foobar");
        ar_obj.setRecord(rec);
        // some actions...
}

If you work need any other functions or classes your can email me. Unfortunately this time documentation is empty. I fix it nearest time, you can see test folder for code examples.

License

This code under MIT license
Home: https://github.com/victorzhuk/orm-qt
Author: Victor Zhuk zhuk@pm.me