Creating a dynamic text is not possible

mlaletina95 commented 1 month ago

Some questions contain placeholders that rely on the user's previous answers.

For example:

Regarding your use of (NAME THE SELECTED MEDICATION OR CLASS OF MEDICATIONS) over the past 12 months
Have you found that you needed to take larger doses of (NAME THE SELECTED MEDICATION OR CLASS OF MEDICATIONS) to achieve the same effect as before?

Currently it's impossible to make item.text dynamic.

mlaletina95 commented 1 month ago

It would be helpful if this extension https://build.fhir.org/ig/HL7/sdc/examples.html#using-text-and-cqf-expression is implemented.

atuonufure commented 2 weeks ago

Example

  - text: What is your favorite beverage to drink?
    type: string
    linkId: beverageType

  - type: display
    linkId: result
    cqfExpression:
      language: text/fhirpath
      expression: >-
        'Your favorite drink: ' + %QuestionnaireResponse.item.where(linkId='beverageType').answer.value.string

ruscoder commented 1 week ago

The example is wrong. According to the specification it should be:

item:
  - text: Default text
    _text:
      extension:
        - url: http://hl7.org/fhir/StructureDefinition/cqf-expression
          valueExpression:
            language: text/fhirpath
            expression: >-
              'Your favorite drink: ' + %QuestionnaireResponse.item.where(linkId='beverageType').answer.value.string

or in first class extension format:

item:
  - text: Default text
    _text:
      cqfExpression:
        language: text/fhirpath
        expression: >-
          'Your favorite drink: ' + %QuestionnaireResponse.item.where(linkId='beverageType').answer.value.string

Examples of aidbox manifest using Attributes for first class extension (it's necessary for FHIR conversion)

            "Questionnaire.item._text": {
                "path": ["item", "_text"],
                "resource": {"resourceType": "Entity", "id": "Questionnaire"},
            }, 
            "Questionnaire.item._text.extension": {
                "path": ["item", "_text", "extension"],
                "resource": {"resourceType": "Entity", "id": "Questionnaire"},
                "type": {"resourceType": "Entity", "id": "Extension"},
                "isCollection": True,
            }, 
            "Questionnaire.item._text.cqfExpression": {
                "path": ["item", "_text", "cqfExpression"],
                "resource": {"resourceType": "Entity", "id": "Questionnaire"},
                "type": {"resourceType": "Entity", "id": "Expression"},
                "description": "An expression that, when evaluated, provides the value for the element on which it appears.

",
                "extensionUrl": "http://hl7.org/fhir/StructureDefinition/cqf-expression",
            },

beda-software / fhir-emr

Creating a dynamic text is not possible #321