Form update problem

I am trying to update my form with the following code by the form won't save the edits.

Code:

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tableModel->select();
  QModelIndex index = ui.tableView->currentIndex();
  QString sqlQuery = QString("UPDATE %1 SET firstname=:firstname, lastname=:lastname, country=:country, city=:city WHERE id=:id)").arg(tableName);
  query.prepare(sqlQuery);
  QSqlRecord recordz = tableModel->record(index.row());
 
  query.bindValue(":firstname", ui.fEdit->text());
  query.bindValue(":lastname",  ui.lnEdit->text());
  query.bindValue(":country", ui.cEdit->text());
  query.bindValue(":city",  ui.cityEdit->text());
  query.bindValue(":id", recordz.value("id").toInt());
  query.exec();
  tableModel->submitAll();

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Your code doesn't make any sense. Replace line #13 with tableModel->select(). Of course you will lose all the changes done through the model (if any). Better yet, use QDataWidgetMapper.

I am already using QDataWidgetMapper to navigate between records.I am writing a simple sqlite manager and this is the first time i have written this much code.I will look into my saveEdits function afresh.Its the only function that remains.

Quote:

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Originally Posted by thefatladysingsopera

I am already using QDataWidgetMapper to navigate between records.

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Use it to edit the records.

I don't have a permanent table set in my model so i am choosing what table i want in my model.

I don't see how it is related to the problem.

Quote:

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Originally Posted by wysota

Use it to edit the records.

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I have tried it and works to some degree but the problem is that it inserts duplicate records on other tables.

Unrelated: QSqlTableModel has this function tableName () that returns the name of the currently selected table.In my application,i have my own way of getting the currently selected table but even so,if you are going to be editing the records using QDataWidget mapper in such an arrangement,i reckon its going to be too complicated.

Is that extra closing parenthesis in your query after "id=:id" a typo?

Quote:

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Originally Posted by thefatladysingsopera

I have tried it and works to some degree but the problem is that it inserts duplicate records on other tables.

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I think it is the problem of your code and not anything inherent to QDataWidgetMapper.

Quote:

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Unrelated: QSqlTableModel has this function tableName () that returns the name of the currently selected table.In my application,i have my own way of getting the currently selected table but even so,if you are going to be editing the records using QDataWidget mapper in such an arrangement,i reckon its going to be too complicated.

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I really don't see how table names are related to QDataWidgetMapper. The latter works on generic models, it doesn't care about any table names.

Thanks so much for your comments.My code i admit is really not that good and in the coming days i will be taking more Qt classes to improve my skills.