Рефакт users 1

2026-03-28 19:55:48 +03:00 · 2025-08-12 11:13:31 +03:00
parent c80bab5a66
commit bcd58e9631
11 changed files with 1844 additions and 1628 deletions
--- a/DataBaseLMS/databaselms_groups.cpp
+++ b/DataBaseLMS/databaselms_groups.cpp
@@ -0,0 +1,95 @@
+#include "databaselms.h"
+
+#include <QtSql>
+#include <QSqlDatabase>
+#include <QSqlDriver>
+#include <QMessageBox>
+
+
+QList<Group> DataBaseLMS::selectAllGroups()
+{
+    QList<Group> listGroups;
+
+    QString queryStr = QString("SELECT group_id, name "
+                                                 "FROM public.groups "
+                                                 "ORDER BY group_id ASC");
+
+    QSqlQuery query = QSqlQuery(*db);
+
+    if(queryExec(queryStr, &query))
+    {
+        while (query.next())
+        {//Группа
+            Group group;
+            group.setID(query.value(0).toInt());
+            group.setName(query.value(1).toString());
+
+            listGroups.append(group);
+        }
+    }
+
+    return listGroups;
+}
+
+Group DataBaseLMS::selectGroup(int id_group)
+{
+    Group group;
+
+    QString queryStr = QString("SELECT group_id, name "
+                                                 "FROM public.groups "
+                                                 "WHERE groups.group_id = %1 ").arg(
+                                                        id_group);
+
+    QSqlQuery query = QSqlQuery(*db);
+
+    if(queryExec(queryStr, &query))
+    {
+        if (query.first())
+        {//Инструктор
+            group.setID(query.value(0).toInt());
+            group.setName(query.value(1).toString());
+        }
+    }
+
+    return group;
+}
+
+int DataBaseLMS::insertGroup()
+{
+    QString queryStr = QString("INSERT INTO public.groups "
+                                                 "DEFAULT VALUES "
+                                                 "RETURNING group_id");
+
+    return queryExecInt(queryStr);
+}
+
+int DataBaseLMS::insertGroup(Group group)
+{
+    QString queryStr = QString("INSERT INTO public.groups (name) "
+                                                 "VALUES ('%1') "
+                                                 "RETURNING groups.group_id").arg(
+                                                        group.getName());
+
+    return queryExecInt(queryStr);
+}
+
+int DataBaseLMS::deleteGroup(int id_group)
+{
+    QString queryStr = QString("DELETE FROM public.groups "
+                                                 "WHERE group_id = %1 "
+                                                 "RETURNING groups.group_id").arg(
+                                                        QString::number(id_group));
+
+    return queryExecInt(queryStr);
+}
+
+int DataBaseLMS::updateGroup(Group group)
+{
+    QString queryStr = QString("UPDATE public.groups SET name = '%1' "
+                                                 "WHERE group_id = %2 "
+                                                 "RETURNING groups.group_id").arg(
+                                                        group.getName(),
+                                                        QString::number(group.getID()) );
+
+    return queryExecInt(queryStr);
+}