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| |
| #include "sqlconversationmodel.h" |
| |
| #include <QDateTime> |
| #include <QDebug> |
| #include <QSqlError> |
| #include <QSqlRecord> |
| #include <QSqlQuery> |
| |
| static const char *conversationsTableName = "Conversations"; |
| |
| static void createTable() |
| { |
| if (QSqlDatabase::database().tables().contains(conversationsTableName)) { |
| // The table already exists; we don't need to do anything. |
| return; |
| } |
| |
| QSqlQuery query; |
| if (!query.exec( |
| "CREATE TABLE IF NOT EXISTS 'Conversations' (" |
| "'author' TEXT NOT NULL," |
| "'recipient' TEXT NOT NULL," |
| "'timestamp' TEXT NOT NULL," |
| "'message' TEXT NOT NULL," |
| "FOREIGN KEY('author') REFERENCES Contacts ( name )," |
| "FOREIGN KEY('recipient') REFERENCES Contacts ( name )" |
| ")")) { |
| qFatal("Failed to query database: %s", qPrintable(query.lastError().text())); |
| } |
| |
| query.exec("INSERT INTO Conversations VALUES('Me', 'Ernest Hemingway', '2016-01-07T14:36:06', 'Hello!')"); |
| query.exec("INSERT INTO Conversations VALUES('Ernest Hemingway', 'Me', '2016-01-07T14:36:16', 'Good afternoon.')"); |
| query.exec("INSERT INTO Conversations VALUES('Me', 'Albert Einstein', '2016-01-01T11:24:53', 'Hi!')"); |
| query.exec("INSERT INTO Conversations VALUES('Albert Einstein', 'Me', '2016-01-07T14:36:16', 'Good morning.')"); |
| query.exec("INSERT INTO Conversations VALUES('Hans Gude', 'Me', '2015-11-20T06:30:02', 'God morgen. Har du fått mitt maleri?')"); |
| query.exec("INSERT INTO Conversations VALUES('Me', 'Hans Gude', '2015-11-20T08:21:03', 'God morgen, Hans. Ja, det er veldig fint. Tusen takk! " |
| "Hvor mange timer har du brukt på den?')"); |
| } |
| |
| SqlConversationModel::SqlConversationModel(QObject *parent) : |
| QSqlTableModel(parent) |
| { |
| createTable(); |
| setTable(conversationsTableName); |
| setSort(2, Qt::DescendingOrder); |
| // Ensures that the model is sorted correctly after submitting a new row. |
| setEditStrategy(QSqlTableModel::OnManualSubmit); |
| } |
| |
| QString SqlConversationModel::recipient() const |
| { |
| return m_recipient; |
| } |
| |
| void SqlConversationModel::setRecipient(const QString &recipient) |
| { |
| if (recipient == m_recipient) |
| return; |
| |
| m_recipient = recipient; |
| |
| const QString filterString = QString::fromLatin1( |
| "(recipient = '%1' AND author = 'Me') OR (recipient = 'Me' AND author='%1')").arg(m_recipient); |
| setFilter(filterString); |
| select(); |
| |
| emit recipientChanged(); |
| } |
| |
| QVariant SqlConversationModel::data(const QModelIndex &index, int role) const |
| { |
| if (role < Qt::UserRole) |
| return QSqlTableModel::data(index, role); |
| |
| const QSqlRecord sqlRecord = record(index.row()); |
| return sqlRecord.value(role - Qt::UserRole); |
| } |
| |
| QHash<int, QByteArray> SqlConversationModel::roleNames() const |
| { |
| QHash<int, QByteArray> names; |
| names[Qt::UserRole] = "author"; |
| names[Qt::UserRole + 1] = "recipient"; |
| names[Qt::UserRole + 2] = "timestamp"; |
| names[Qt::UserRole + 3] = "message"; |
| return names; |
| } |
| |
| void SqlConversationModel::sendMessage(const QString &recipient, const QString &message) |
| { |
| const QString timestamp = QDateTime::currentDateTime().toString(Qt::ISODate); |
| |
| QSqlRecord newRecord = record(); |
| newRecord.setValue("author", "Me"); |
| newRecord.setValue("recipient", recipient); |
| newRecord.setValue("timestamp", timestamp); |
| newRecord.setValue("message", message); |
| if (!insertRecord(rowCount(), newRecord)) { |
| qWarning() << "Failed to send message:" << lastError().text(); |
| return; |
| } |
| |
| submitAll(); |
| } |