> Hello Everyone
> I am using wt-3.1.9. I am making database application based on student
> just enter name and roll number.
> In which show some error. These error are couldent solve by me. I am
> unable to make the database of any application.
> please visit this application and tell me how to solve the problem.
> please help me
>
source code :-
#include "student.h"
#include <Wt/WApplication>
#include <Wt/WBreak>
#include <Wt/WContainerWidget>
#include <Wt/WText>
#include <Wt/WLineEdit>
#include <Wt/WPushButton>
#include <Wt/WCheckBox>
#include <Wt/WAnchor>
#include <Wt/WImage>
#include <Wt/Dbo/backend/Sqlite3>
#include <Wt/WTemplate>
#include <Wt/WStackedWidget>
#include <Wt/WCssDecorationStyle>
#include <Wt/Dbo/Dbo>
#include <Wt/Dbo/backend/Sqlite3>
#include <Wt/Dbo/QueryModel>
#include <Wt/WTableView>
namespace dbo = Wt::Dbo;
#include <string>
using namespace Wt;
class HelloApplication : public WApplication
{
public:
HelloApplication(const WEnvironment& env);
private:
WLineEdit *Name;
WLineEdit *rollno;
};
HelloApplication::HelloApplication(Wt::Dbo::Session&, const std::string&,
const Wt::WEnvironment&)
: WApplication(env)
{
setTitle("Parvinder"); // application title
root()->addWidget(new WText("<h1>This is my officel website</h1>"));
root()->addWidget(new WBreak());
// WAnchor *x = new WAnchor("http://www.parvinder.co.in";, "Jump to the
middle", root());
WAnchor *x = new Wt::WAnchor("http://www.parvinder.co.in";, "parvinder",
root());
root()->addWidget(new WBreak());
Wt::WImage *img = new Wt::WImage("/images/pinder3.jpg", root());
img->setAlternateText("Parvinder");
root()->addWidget(new WBreak());
root()->addWidget(new WText("Name")); // show some text
Name = new WLineEdit(root()); // allow text input
Name->setFocus();
root()->addWidget(new WText("rollno"));
rollno = new WLineEdit(root());
rollno->setFocus();
//password->setEchoMode(WLineEdit::Password);
WPushButton *b = new WPushButton("add", root()); // create a button
b->setMargin(5, Left);
b->clicked().connect(this, &HelloApplication::root());
//Wt::WWidget *widget =("/images/pinder3.jpg", root());
//widget->decorationStyle().setCursor(PointingHandCursor);
}
template<class Action>
void persist(Action& a)
{
dbo::field(a, Name, "Name");
dbo::field(a, rollno, "rollno");
}
void create_database (void)
{
dbo::Session session;
dbo::backend::Sqlite3 sqlite3 ("MyDB.sql3");
session.setConnection (sqlite3);
session.mapClass<User> ("pinder");
session.createTables();
{
dbo::Transaction transaction(session);
User *user = new User();
user->Name = " " + boost::lexical_cast<std::string>(i);
user->rollno = " ";
dbo::ptr<User> userPtr = session.add (user);
}
transaction.commit();
}
}
class mainWindow : public WContainerWidget
{
public:
mainWindow (dbo::Session & session, WContainerWidget *parent=0)
: WContainerWidget (parent)
{
dbo::QueryModel< dbo::ptr<User> > *model = new dbo::QueryModel<
dbo::ptr<User> >();
model->setQuery(session.find<User>());
model->addAllFieldsAsColumns();
}
};
class MyApplication : public WApplication
{
private:
dbo::Session session;
dbo::backend::Sqlite3 sqlite3;
public:
MyApplication (WEnvironment const & env)
: WApplication (env), sqlite3 ("MyDB.sql3")
{
session.setConnection (sqlite3);
session.mapClass<User>("user");
root () -> addWidget (new mainWindow (session, root ()));
}
~MyApplication (void) { std::cout << "MyApplication dead" << std::endl; }
};
WApplication *createApplication(const WEnvironment& env)
{
return new MyApplication (env);
return new HelloApplication(env);
}
int main(int argc, char **argv)
{
create_database ();
return WRun(argc, argv, &createApplication);
}
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