Form Behavior and Rendering

This section defines expectations for how Ontario SDC-compliant forms are rendered, how logic is executed, and how data is prepopulated and processed by conformant systems.

Expressions

The Ontario Questionnaire profile includes several mustSupport extensions that use the Expression data type.

• All expressions SHALL be written in FHIRPath.
• Form fillers SHALL support any valid FHIRPath 2.0.0 expression used in forms.
• Expressions may be used for logic, conditional visibility, validation rules, calculated values, and dynamic rendering.

Population and Extraction

Form fillers SHALL support Expression-based population and Definition-based extraction.

QuestionnaireResponse Narrative

When a QuestionnaireResponse is completed, form fillers SHALL generate the narrative using any provided FHIR Liquid template pointed to by the Questionnaire’s ResponseRenderingLiquid extension.

Rendering Expectations

Ontario Health specifies the following behavior for compliant rendering systems:

• Radio Buttons SHALL be rendered as individual buttons, where the 'selected' button is highlighted as depressed.

Future Enhancements (TODOs)

• Additional rendering expectations
• Images of what rendering is acceptable.