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+Chapter 2: ``bookdelegate.cpp`` to ``bookdelegate.py``
+*******************************************************
+
+Now that your database is in place, port the C++ code for the
+``BookDelegate`` class. This class offers a delegate to present
+and edit the data in a ``QTableView``. It inherits
+``QSqlRelationalDelegate`` interface, which offers features
+specific for handling relational databases, such as a combobox
+editor for foreign key fields. To begin with, create
+``bookdelegate.py`` and add the following imports to it:
+
+.. literalinclude:: bookdelegate.py
+   :language: python
+   :linenos:
+   :lines: 40-47
+
+After the necessary ``import`` statements, port the
+constructor code for the ``BookDelegate`` class. Both
+the C++ and Python versions of this code initialize a
+``QSqlRelationalDelegate`` and ``QPixmap`` instance.
+Here is how they look:
+
+C++ version
+-------------
+
+.. literalinclude:: bookdelegate.cpp
+   :language: c++
+   :linenos:
+   :lines: 54-59
+
+Python version
+---------------
+
+.. literalinclude:: bookdelegate.py
+   :language: python
+   :linenos:
+   :lines: 47-54
+
+.. note:: The Python version loads the ``QPixmap`` using
+   the absolute path of ``star.png`` in the local
+   filesystem.
+
+As the default functionality offered by the
+``QSqlRelationalDelegate`` is not enough to present
+the books data, you must reimplement a few functions.
+For example, painting stars to represent the rating for
+each book in the table. Here is how the reimplemented
+code looks like:
+
+C++ version
+------------
+
+.. literalinclude:: bookdelegate.cpp
+   :language: c++
+   :linenos:
+   :lines: 59-
+
+Python version
+---------------
+
+.. literalinclude:: bookdelegate.py
+   :language: python
+   :linenos:
+   :lines: 55-
+
+Now that the delegate is in place, run the following
+``main.py`` to see how the data is presented:
+
+.. literalinclude:: main.py
+   :language: python
+   :linenos:
+   :lines: 40-
+
+Here is how the application will look when you run it:
+
+.. image:: images/chapter2_books.png
+   :alt: Books table data
+
+The only difference you'll notice now in comparison to
+:doc:`chapter 1 <../chapter1/chapter1>` is that the
+``rating`` column looks different.
+
+Try improving the table even further by adding these
+features:
+
+* Title for each column
+* SQL relation for the ``author_id`` and ``genre_id`` columns
+* Set a title to the window
+
+With these features, this is how your table will look like:
+
+.. image:: images/chapter2_books_with_relation.png
+   :alt: Books table with SQL relation