The following code snippet shows how the QSqlRelationalTableModel
was set up:
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 0
+ \snippet relationaltablemodel/relationaltablemodel.cpp 0
\codeline
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 1
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 2
+ \snippet relationaltablemodel/relationaltablemodel.cpp 1
+ \snippet relationaltablemodel/relationaltablemodel.cpp 2
See the QSqlRelationalTableModel documentation for details.
*/
You can use the same model as a data source for multiple views.
If the user edits the model through one of the views, the other
views will reflect the changes immediately. The
- \l{sql/tablemodel}{Table Model} example shows how it works.
+ \l{tablemodel}{Table Model} example shows how it works.
View classes display a header at the top to label the columns. To
change the header texts, call
model. The header's labels default to the table's field names.
For example:
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 3
+ \snippet relationaltablemodel/relationaltablemodel.cpp 3
QTableView also has a vertical header on the left with numbers
identifying the rows. If you insert rows programmatically using
read-write. The following two functions make fields 1 and 2 of a
query model editable:
- \snippet sql/querymodel/editablesqlmodel.cpp 0
+ \snippet querymodel/editablesqlmodel.cpp 0
\codeline
- \snippet sql/querymodel/editablesqlmodel.cpp 1
+ \snippet querymodel/editablesqlmodel.cpp 1
The setFirstName() helper function is defined as follows:
- \snippet sql/querymodel/editablesqlmodel.cpp 2
+ \snippet querymodel/editablesqlmodel.cpp 2
The setLastName() function is similar. See the
- \l{sql/querymodel}{Query Model} example for the complete source code.
+ \l{querymodel}{Query Model} example for the complete source code.
Subclassing a model makes it possible to customize it in many
ways: You can provide tooltips for the items, change the
\image relationaltable.png Editing a foreign key in a relational table
- The \l{sql/relationaltablemodel}{Relational Table Model} example
+ The \l{relationaltablemodel}{Relational Table Model} example
illustrates how to use QSqlRelationalTableModel in conjunction with
QSqlRelationalDelegate to provide tables with foreign key
support.
\image qdatawidgetmapper-simple.png
- The \l{sql/books}{Books} example shows how information can
+ The \l{books}{Books} example shows how information can
be presented for easy access by using QDataWidgetMapper and a set of
simple input widgets.
*/
use the class, simply call QAbstractItemView::setItemDelegate()
on the view with an instance of QSqlRelationalDelegate:
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 4
+ \snippet relationaltablemodel/relationaltablemodel.cpp 4
- The \l{sql/relationaltablemodel}{Relational Table Model} example
+ The \l{relationaltablemodel}{Relational Table Model} example
(shown below) illustrates how to use QSqlRelationalDelegate in
conjunction with QSqlRelationalTableModel to provide tables with
foreign key support.
The following code snippet shows how the QSqlRelationalTableModel
was set up:
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 0
+ \snippet relationaltablemodel/relationaltablemodel.cpp 0
\codeline
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 1
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 2
+ \snippet relationaltablemodel/relationaltablemodel.cpp 1
+ \snippet relationaltablemodel/relationaltablemodel.cpp 2
The setRelation() function calls establish a relationship between
two tables. The first call specifies that column 2 in table \c
call QAbstractItemView::setItemDelegate() on the view with an
instance of QSqlRelationalDelegate:
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 4
+ \snippet relationaltablemodel/relationaltablemodel.cpp 4
- The \l{sql/relationaltablemodel} example illustrates how to use
+ The \l{relationaltablemodel} example illustrates how to use
QSqlRelationalTableModel in conjunction with
QSqlRelationalDelegate to provide tables with foreign key
support.
Example:
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 0
+ \snippet relationaltablemodel/relationaltablemodel.cpp 0
\codeline
- \snippet sql/relationaltablemodel/relationaltablemodel.cpp 1
+ \snippet relationaltablemodel/relationaltablemodel.cpp 1
The setRelation() call specifies that column 2 in table \c
employee is a foreign key that maps with field \c id of table \c