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@VLSMB
VLSMB committed Jun 27, 2022
1 parent 855ecc6 commit a52e9f6
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Showing 6 changed files with 1,816 additions and 3 deletions.
2 changes: 1 addition & 1 deletion 20220214StudentDB_CPP.pro.user
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@@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE QtCreatorProject>
<!-- Written by QtCreator 4.3.1, 2022-06-08T13:21:28. -->
<!-- Written by QtCreator 4.3.1, 2022-06-27T12:26:17. -->
<qtcreator>
<data>
<variable>EnvironmentId</variable>
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1,541 changes: 1,541 additions & 0 deletions 20220214StudentDB_CPP.pro.user.f2f2294.4.8-pre1
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242 changes: 242 additions & 0 deletions database.cpp
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Expand Up @@ -4,6 +4,23 @@
#include <QTableWidgetItem>
#include <QMessageBox>

QStringList ComboBox_To_StringList(QComboBox *ComboBox, bool haveALL)
{
// 将组合框转换为字符串组，便于修改数据库，同时删除最后一个元素“所有”
QStringList List;
for (int index=0; index<ComboBox->count(); index++)
List << ComboBox->itemText(index);
if (haveALL)
List.removeLast();
return List;
}

int Get_Index_By_Text(QComboBox *ComboBox, QString Text)
{
QStringList StringList = ComboBox_To_StringList(ComboBox, false);
return StringList.indexOf(Text);
}

bool Find_User_login(QString user,QString pwd){
QSqlQuery query;
query.exec(QString(R"(SELECT userPwd FROM admin WHERE userName='%1';)").arg(user));
Expand All @@ -14,6 +31,7 @@ bool Find_User_login(QString user,QString pwd){
return false;
else if (Value==pwd)
return true;
return false;
}

bool Open_Database(){
Expand All @@ -27,6 +45,53 @@ bool Exists_Database(){
QSqlDatabase dbs = QSqlDatabase::addDatabase("QSQLITE");
QSqlDatabase* db=&dbs;

int Get_Table_Number(QString name)
{
QSqlQuery query;
query.exec("select * from "+name);
query.last();
return query.at() + 1;
}

void ID_To_Name(QTableWidget *Table, QString tablename, int Col, int IDIndex, int ValueIndex)
{
// 将表格中的ID转换为相应的名字
QSqlQuery query1;
query1.exec("select * from "+tablename);
query1.next();
int number = Get_Table_Number(tablename);
while (number--)
{
for (int row=0;row<Table->rowCount(); row++)
{
int compare = QString::compare(Table->item(row,Col)->text(), query1.value(IDIndex).toString());
if (compare == 0)
Table->item(row,Col)->setText(query1.value(ValueIndex).toString());
}
query1.next();
}
}

void Table_To_ComboBox(QComboBox *ComboBox, QString table, int Index, bool haveall)
{
QSqlQuery query1;
query1.exec("select * from "+table);
query1.last();
int num = query1.at()+1;
QSqlQuery query2;
query2.exec("select * from "+table);
query2.next();
QStringList List;
while (num--)
{
List << query2.value(Index).toString();
query2.next();
}
if (haveall)
List << "所有";
ComboBox->addItems(List);
}

void Refresh_Table(QTableWidget *Table, QString Name)
{
for(int r = Table->rowCount() - 1;r >= 0; r--)
Expand All @@ -52,6 +117,132 @@ void Refresh_Table(QTableWidget *Table, QString Name)
}
}

void Refresh_StudentInfo_Table_INITIAL(QTableWidget *Table)
{
// 格式化年级和班级的数字
Refresh_Table(Table, "student");
ID_To_Name(Table, "grade", 3, 0, 1);
ID_To_Name(Table, "class", 2, 0, 2);
/*QSqlQuery query1;
query1.exec("select * from grade");
query1.next();
int grade = Get_Table_Number("grade");
while (grade--)
{
for (int row=0;row<Table->rowCount(); row++)
{
int compare = QString::compare(Table->item(row,3)->text(), query1.value(0).toString());
if (compare == 0)
Table->item(row,3)->setText(query1.value(1).toString());
}
query1.next();
}
QSqlQuery query2;
query2.exec("select * from class");
query2.next();
int classnumber = Get_Table_Number("class");
while (classnumber--)
{
for (int row=0;row<Table->rowCount(); row++)
{
int compare = QString::compare(Table->item(row,2)->text(), query2.value(0).toString());
if (compare == 0)
Table->item(row,2)->setText(query2.value(2).toString());
}
query2.next();
}*/

}

void Refresh_ResultInfo_Table_INITIAL(QTableWidget *Table)
{
for(int r = Table->rowCount() - 1;r >= 0; r--)
{
// 初始化表格，清空所有行
Table->removeRow(r);
}
QSqlQuery query;
int i = 0,j = 0, Col, Row;
query.exec("select * from result");
query.last();
Row = query.at() + 1;
Table->setRowCount(Row);
Col = Table->columnCount();
query.first();
// 按列填数据
for (i=0; i<Row; i++)
{
for (j=0; j<Col; j++)
{
// 每一列的情况
switch (j)
{
case 0:
Table->setItem(i, j, new QTableWidgetItem(query.value(1).toString()));
break;
case 1:
break;
case 2:
break;
case 3:
Table->setItem(i, j, new QTableWidgetItem(query.value(3).toString()));
break;
case 4:
Table->setItem(i, j, new QTableWidgetItem(query.value(2).toString()));
break;
case 5:
Table->setItem(i, j, new QTableWidgetItem(query.value(4).toString()));
break;
case 6:
Table->setItem(i, j, new QTableWidgetItem(query.value(0).toString()));
break;
}
}
query.next();
}
// 格式化科目和种类
ID_To_Name(Table, "subject", 3, 0, 1);
ID_To_Name(Table, "examkinds", 4, 0, 1);

// 通过学生ID映射学生姓名和班级
QSqlQuery query2, query3;
query2.exec("select * from student");
query2.last();
int student = query2.at()+1;
query3.exec("select * from student");
query3.next();
for (int x=0; x<student; x++)
{
for (int y=0; y<Table->rowCount(); y++)
{
QString temp1 = Table->item(y,0)->text();
QString temp2 = query3.value(0).toString();
int compare = QString::compare(temp1, temp2);
if (compare==0)
{
Table->setItem(y, 1, new QTableWidgetItem(query3.value(1).toString()));
Table->setItem(y, 2, new QTableWidgetItem(query3.value(2).toString()));
}
}
query3.next();
}

ID_To_Name(Table, "class", 2, 0, 2);
}

void Refresh_StudentInfo_Table(QTableWidget *Table, QComboBox *Grade, QComboBox *Class)
{
Refresh_StudentInfo_Table_INITIAL(Table);
for (int row=0;row<Table->rowCount();row++)
{
if (Table->item(row,2)->text() != Class->currentText() && Class->currentText() != "所有")
Table->hideRow(row);
if (Table->item(row,3)->text() != Grade->currentText() && Grade->currentText() != "所有")
Table->hideRow(row);
}

}

bool Delete_Table(QTableWidget *Table, QString TableName, int RowID)
{
QSqlQuery query;
Expand Down Expand Up @@ -88,6 +279,21 @@ bool Add_Examkinds_Table(QTableWidget *Table, QString NewID, QString NewName)
Refresh_Table(Table, "examkinds");
return status;
}
bool Add_Student_Table(QTableWidget *Table, QComboBox *classbox, QComboBox *gradebox, QString stuID, QString stuName, QString classID, QString gradeID, QString age, QString sex, QString phone, QString address)
{
QSqlQuery query;
bool status = query.exec(QString("insert into student (stuID, stuName, classID, gradeID, age, sex, phone, address) values ('%0', '%1', '%2', '%3', '%4', '%5', '%6', '%7')")
.arg(stuID, stuName, classID, gradeID, age, sex, phone, address));
Refresh_StudentInfo_Table(Table, gradebox, classbox);
return status;
}
bool Add_Result_Table(QTableWidget *Table, QString ID, QString stuID, QString kindID, QString subID, QString result)
{
QSqlQuery query;
bool status = query.exec(QString("insert into result (ID, stuID, kindID, subID, result) values ('%0', '%1', '%2', '%3', '%4')")
.arg(ID, stuID, kindID, subID, result));
return status;
}

bool Updata_Table(QTableWidget *Table, QString TableName, QString KeyName, QString Value)
{
Expand Down Expand Up @@ -116,6 +322,42 @@ QStringList Refresh_Grade_Table_Const(QComboBox *ComboBox)
return gradeID;
}

QStringList Refresh_Classes_Table_Const(QComboBox* ComboBox)
{
// 返回一个QStringList，内容为classID，索引值与className一一对应
QSqlQuery query;
query.exec("select * from class");
query.last();
int size = query.at() + 1; // size为数据个数
QStringList classID;
query.first();
for (int i=0; i<size; i++)
{
classID << query.value(0).toString();
ComboBox->addItem(query.value(2).toString());
query.next();
}
return classID;
}

QStringList Refresh_KindsSubject_Table_Const(QString name)
{
// 返回一个QStringList
QSqlQuery query;
query.exec("select * from "+name);
query.last();
int size = query.at() + 1; // size为数据个数
QStringList classID;
query.first();
for (int i=0; i<size; i++)
{
classID << query.value(0).toString();
query.next();
}
return classID;
}


bool Add_Classes_Table(QTableWidget *Table, QString classID, QString gradeID, QString className)
{
QSqlQuery query;
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14 changes: 14 additions & 0 deletions database.h
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
#include <QTableWidget>
#include <QComboBox>
#include <QStringList>
#include <QSqlRecord>

extern bool Find_User_login(QString user,QString pwd);
extern bool Open_Database();
Expand All @@ -19,8 +20,21 @@ extern bool Updata_Table(QTableWidget* Table, QString TableName, QString KeyName
extern bool Add_Grade_Table(QTableWidget* Table, QString NewID, QString NewName);
extern bool Add_Subject_Table(QTableWidget* Table, QString NewID, QString NewName);
extern bool Add_Examkinds_Table(QTableWidget* Table, QString NewID, QString NewName);
extern bool Add_Student_Table(QTableWidget* Table, QComboBox *classbox, QComboBox *gradebox,QString stuID, QString stuName, QString classID, QString gradeID, QString age, QString sex, QString phone,QString address);
extern bool Add_Result_Table(QTableWidget* Table, QString ID, QString stuID, QString kindID, QString subID, QString result);

extern QStringList Refresh_Grade_Table_Const(QComboBox* ComboBox);
extern QStringList Refresh_Classes_Table_Const(QComboBox* ComboBox);
extern QStringList Refresh_KindsSubject_Table_Const(QString name);
extern bool Add_Classes_Table(QTableWidget* Table,QString classID, QString gradeID, QString className);
extern void Refresh_StudentInfo_Table(QTableWidget *Table, QComboBox *Grade, QComboBox *Class);
extern void Refresh_StudentInfo_Table_INITIAL(QTableWidget *Table);
extern void Refresh_ResultInfo_Table_INITIAL(QTableWidget *Table);

extern int Get_Table_Number(QString name);
extern QStringList ComboBox_To_StringList(QComboBox *ComboBox, bool haveALL);
extern int Get_Index_By_Text(QComboBox *ComboBox, QString Text);
extern void ID_To_Name(QTableWidget *Table, QString tablename, int Col, int IDIndex, int ValueIndex);
extern void Table_To_ComboBox(QComboBox *ComboBox, QString table, int Index, bool haveall);

#endif // DATABASE_H
4 changes: 2 additions & 2 deletions main.ui
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Expand Up @@ -78,7 +78,7 @@
<item>
<widget class="QLineEdit" name="UserEdit">
<property name="text">
<string>admin</string>
<string/>
</property>
</widget>
</item>
Expand Down Expand Up @@ -134,7 +134,7 @@
<item>
<widget class="QLineEdit" name="PassEdit">
<property name="text">
<string>admin</string>
<string/>
</property>
<property name="echoMode">
<enum>QLineEdit::Password</enum>
Expand Down
16 changes: 16 additions & 0 deletions userwindow.ui
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Expand Up @@ -206,5 +206,21 @@
</hint>
</hints>
</connection>
<connection>
<sender>tbUser</sender>
<signal>doubleClicked(QModelIndex)</signal>
<receiver>btnEdit</receiver>
<slot>click()</slot>
<hints>
<hint type="sourcelabel">
<x>140</x>
<y>80</y>
</hint>
<hint type="destinationlabel">
<x>132</x>
<y>216</y>
</hint>
</hints>
</connection>
</connections>
</ui>

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