This application is a generic implementation of a decision tree, which is completely database-configurable. Users are asked questions and respond via SMS messages using the RapidSMS framework built on top of Django.
- Support for sessions (i.e. 100 different users can all go through a session at the same time)
- Branching logic for the series of questions
- Tree visualization
- Errors for unrecognized messages (e.g. ‘i don’t recognize that kind of fruit’) and multiple retries before exiting the session
The latest stable release of rapidsms-decisiontree-app can be installed from the Python Package Index (PyPi) with pip:
pip install rapidsms-decisiontree-app
Once installed you should include decisiontree in your INSTALLED_APPS setting.
INSTALLED_APPS = ( # Other installed apps would go here 'decisiontree', )
You’ll need to create the necessary database tables:
python manage.py syncdb
rapidsms-decisiontree-app supports using South for database migrations. If you are using South then you should migrate:
python manage.py migrate decisiontree
At this point data can only be viewed/changed in the Django admin. If you want to enable this on the front-end you can include the decisiontree.urls in your root url patterns.
urlpatterns = patterns('', # Other url patterns would go here url(r'^decisiontree/', include('decisiontree.urls')), )
See the full documentation for additional configuration options.
Running the Tests¶
The tests are setup to run using tox >= 1.4:
pip install tox # Run all test environments tox # Test only Python 2.6 and Django 1.3 tox -e py26-1.3.X
To see the test coverage you can run:
coverage run $VIRTUAL_ENV/bin/django-admin.py test decisiontree --settings=decisiontree.tests.settings coverage report -m
A common .coveragerc file is include in the repo.
- Decision Tree Overview
- Simple Tree Example
- Advanced Tree Example
- Available Settings
- Release History