13.3.3. Sorting and Filtering

13.3.3. Sorting and Filtering
	13.3. Table Models

[ fromfile: tablemodels.xml id: sortfilter ]

Figure 13.10. Filtered Table View

The code that creates the QLineEdit, the clear button, and the connect statement between them were generated by uic.
Thanks to QSortFilterProxyModel, you can add sorting/filtering capability to an existing model with fewer than five lines of code.
Figure 13.11 shows how the proxy sits between the view and the model.

Figure 13.11. Sort Filter Proxy

Example 13.20 shows what is needed to set up the sort filter proxy in the preceding action table example.

Example 13.20. src/libs/actioneditor/actiontableeditor.cpp

[ . . . . ]

void ActionTableEditor::setupSortFilter() {
    m_sortFilterProxy = new QSortFilterProxyModel(this);
    m_sortFilterProxy->setSourceModel(m_model);       
    m_ui->m_tableView->setModel(m_sortFilterProxy);       
    m_sortFilterProxy->setFilterKeyColumn(-1);        

}
void ActionTableEditor::on_m_filterField_textChanged    
    (const QString& newText) { 
    m_sortFilterProxy->setFilterFixedString(newText); 
}

	SortFilterProxy source model set to `ActionTableModel`.
	Table view model set to proxy model instead of `ActionTableModel`.
	Filter on all fields.
	Auto-connected slot.
	Change the filter string.

The filterField_textChanged is an auto-connected slot that gets called whenever the textChanged signal is emitted by the filterField QLineEdit.


13.3.2. Editable Models		13.4. Tree Models