Using data providers to populate states based on their country

Issue

• Create data providers for the country list and state list by using the below Liferay provided 'Rest Web Services'.
  • localhost:8080/api/jsonws/country/get-countries and localhost:8080/api/jsonws/region/get-regions?country-Id={countryId}
• State list is not coming on selecting of the country which is coming from data providers.

Environment

• Liferay 7.2

Resolution

• To find a list of the registered 'JSON' web services or to use these services in Liferay DXP, navigate to 'http://localhost:8080/api/jsonws' if the local server is running.
• The 'https://restcountries.eu/rest/v2/region/{region}?fields=name' URL is exposed to apply a region (for example, Americas, Europe, or Oceania) filter for the countries of the world, not states and that's the reason it is unable to populate the states based on the country selection.
• If there is a requirement to populate states based on the country selection then need to opt for customization or another external rest web service.
  • Kindly, test the response of Rest web services before using them.
  • Customization falls beyond Liferay Support.

Additional Information

• Please refer to Liferay official documents to get more insights into it
  • Using Data Providers to Populate Form Options
  • Data Providers