References and variables

Variables

You can use variables when creating examples with YamlGen. On the root level of your YAML document you define variables using a dollar sign:

$lastname: Williams

You reference them like this:

Patient/1:
    name:
      family: $lastname

which results in:

{
    "resourceType": "Patient",
    "id": "1",
    "name":  [
        {
            "family": "Williams"
        }
    ]
}

Variable lists: you can define a list of variables, and pick a random value from it with [#].

$lastname:
    - John
    - James
    - William

Patient/example:
    name.given: $lastname[#]

FHIRPath

You can also integrate FHIRPath when you create examples. Use FHIRPath in any value by enclosing it with << >>:

Patient:
    id: john
    name.given: <<id.upper()>>

will produce:

{
    "resourceType": "Patient",
    "id": "john",
    "name":  [
        {
            "given":  [
                "JOHN"
            ]
        }
    ]
}