PyQt5 ModelView Example

Example PyQt5 Application using Qt's Model-View architecture showing the following:

• Use of QAbstractListModel to dynamically populate list views
• Applying Model-View architecture to non-Model-aware widgets by using QAbstractListModel in a creative way and using QDataWidgetMapper
• Separation of concerns:
  • Views only talk to Models without interacting with the data repository layer
  • Models talk to the data repository to get data and adapt it to be displayed in View. Also handles data changes caused by View Actions

Running (on Linux)

git clone https://github.com/kennethso168/PyQt5_ModelView_Example
cd PyQt5_ModelView_Example
python3 -m pip venv .venv
source .venv/bin/activate
pip install -r requirements.txt
pyuic main.ui -o main_ui.py
python3 main.py

Limitations

Note that this is a very simple example so here are the limitations at the moment

• No Tests
• No Data validation
• For production, should have a more robust backend instead of a simple text file
• For simplicity, the whole preference file is simply read/written many times. Better approach is needed for a more complex application