UPDATE 2014-06-01: Added links to code examples that helped me learn how to do this.
Here it is, people…brought to you by the magic of the QSqlRelationalTableModel: my editable transactions display widget, complete with combo boxes for selecting categories and accounts from the ‘accounts’ table, coded in elegant, model-view-controller style and in less than 70 lines of code, counting the blank lines added for readability. I’m viewing data from multiple Sqlite tables, even editing, without a single line of SQL. All I have to do is tell ‘QSRTM’ (my affectionate nickname for my new friend, QSqlRelationalTableModel) the name of the table and what to display, and he obediently gets what I want the way I want it. Meanwhile Tkinter is throwing a tempter tantrum in the corner when I try to ask it nicely to please synchronize row selection across a set of list boxes.
While documentation such as Pyside’s is excellent and thorough, I find I need examples of how to use a class. I experiment with altering example code to fit what I am trying to accomplish, and when I feel like I have a grasp of the class’s basics, I go back to the documentation to get a full appreciation of all its capabilities. Two table model examples in particular were essential to me figuring out how to use the ‘QSRTM’: this one which demonstrates general use of a table model, and this one which is a ‘QSRTM’ example.
Screenshot below, and my code is here.