Implementing Business Logic with Webform in GovCMS SaaS

Morpht’s latest blog post, authored by Murray Woodman, explores how government agencies using GovCMS SaaS can implement complex business rules and decision-making tools directly within the Drupal framework. The post highlights that using the Webform module, along with custom submission preprocessors, calculation functions, and Twig templates, site owners can provide dynamic, personalized user experiences without relying on external systems.

The article provides a detailed developer guide, using a BMI calculator as a case study to demonstrate how form data can be processed and used to generate tailored results for users. The use of GovCMS’s native modules enables agencies to build adaptable workflows and present outputs directly within the platform. Additionally, it explains how to create a Drupal View endpoint to expose results to external applications.

Murray also compares this native Drupal approach with the Rules as Code (RaC) model using OpenFisca, pointing out key differences such as logic location, language, and access controls. Despite differences, both approaches share similarities in transparency, templating, and data processing logic. Ultimately, the blog demonstrates that GovCMS SaaS provides powerful tools to encode rules and support user decisions, even without external rule engines.