Extending the Form Engine

You might want to customize the Form Engine in various ways. For example, you might want to:

• Add custom expression helpers.
• Add custom validators and error logic.
• Add custom components.
• Add custom fields.
• Add custom styling.
• Change how expressions get run.
• Change how questions, sections and pages get rendered, and so on.

Running the Form Engine locally

• Fork and clone the AMPATH Form Engine (opens in a new tab) repository.

• Install dependencies by running:

  npm install

• Create a production build of the Form Engine by running:

  npm run build:lib

• Launch a live development server on port 4200 using:

  npm run start

  Visit https://localhost:4200 in your browser. You should see a sample form (opens in a new tab) rendered in the default Encounter Viewer view. Here, you're able to interact with the various form fields and even submit the form.

• Modify the Form Engine. Changes made to the Form Engine will be reflected automatically in the live development server.