docassemble/docassemble_base/docassemble/base/data/questions/examples/country-state.yml at master · jhpyle/docassemble · GitHub

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metadata:
  title: Update dropdown
  short title: Dropdown
  documentation: "https://docassemble.org/docs/background.html#background_response"
  example start: 1
  example end: 2
---
question: |
  Where do you live?
fields:
  - Country: country
    code: countries_list()
  - State: state
    code: |
      states_list(country_code=showifdef('country', 'US', prior=True)) \
      or \
      ['N/A']
    js enable if: val('country')
check in: update_states_list
---
event: update_states_list
code: |
  if action_argument('_changed') == 'country':
    background_response(
      {
        'state':
          {
            'choices': \
              states_list(country_code=action_argument('country')) \
              or \
              ['N/A']
          }
      }, 'fields')
  background_response()
---
mandatory: True
question: |
  You live in
  ${ state_name(state, country_code=country) }
  in
  ${ country_name(country) }.
subquestion: |
  Your country code is `${ country }`.

  Your state code is `${ state }`.