entered values are being cleared in gsp - grails

Question

I am entering values(URLs) in the text box and when I click the next button, validation runs whether the entered url values are valid or not.
if the urls are not valid then i display the error as below
if(valid == false){
this.errors.reject("Incorrect URL is entered for "+countries.get(countryCode)+" - please ensure to use a correct URL for More Games.")
return [];
}
Once the error is shown, its clearing the entered values and need to enter the values again. How can I restrict clearing the values(i think the page is getting loaded again) or to restrict the page to load again.
here is the command -
class DeliveryMoreGamesURLCommand implements Command {
private static final LOG = LogFactory.getLog(DeliveryController.class)
def wrapperService = ApplicationHolder.application.getMainContext().getBean("wrapperService");
def customerService = ApplicationHolder.application.getMainContext().getBean("customerService");
def countryService = ApplicationHolder.application.getMainContext().getBean("countryService");
def helperService = ApplicationHolder.application.getMainContext().getBean("helperService");
def ascService = ApplicationHolder.application.getMainContext().getBean("ascService");
Hashtable<String, String> countries;
public LinkedHashMap<String, Object> preProcess(sessionObject, params, request) {
Delivery delivery = (Delivery) sessionObject;
def customer = Customer.get(delivery.customerId);
def contentProvider = ContentProvider.get(delivery.contentProviderId);
def deployment = Deployment.get(delivery.deploymentId);
def operatingSystem = OperatingSystem.get(delivery.operatingSystemId);
countries = wrapperService.getCountries(deployment, operatingSystem);
def sortedCountries = countries.sort { a, b -> a.value <=> b.value };
def urls = ascService.getMoreGamesUrlsPerTemplates(deployment, operatingSystem);
def moreGamesUrls = new Hashtable<String,String>();
countries.each { country ->
String countryCode = countryService.getTwoLetterCountryAbbreviation(country.key);
String url = customerService.getMoreGamesUrl(customer, contentProvider, countryCode);
if ("".equals(url)) {
url = urls.get(country.key);
if (url == null) {
url = "";
}
}
moreGamesUrls.put(country.key, url); // We need to use the existing country code if the channels are deployed with three letter country codes
}
return [command: this, countries: sortedCountries, moreGamesUrls: moreGamesUrls]
}
public LinkedHashMap<String, Object> postProcess(sessionObject, params, request) {
Delivery delivery = (Delivery) sessionObject;
def urls = params.gamesUrls;
LOG.debug("urls from gsp :"+urls)
try{
urls.eachWithIndex { u, i ->
String countryCode = u.key;
String url = urls["${u.key}"]
if(url != ""){
Boolean valid = helperService.isURLValid(url)
if(valid == false){
this.errors.reject("Incorrect URL is entered for "+countries.get(countryCode)+" - please ensure to use a correct URL for More Games.")
return [];
}
}
}
}catch (Exception ex) {
logger.warn("Incorrect URL is entered", ex)
return [];
}
def moreGamesUrls = new Hashtable<String, String>();
urls.eachWithIndex { u, i ->
String countryCode = u.key;
String url = urls["${u.key}"]
moreGamesUrls.put(countryCode, url);
}
delivery.countries = countries;
delivery.moreGamesUrls = moreGamesUrls;
LOG.debug("moreGamesUrls after edit=${delivery.moreGamesUrls}");
return null;
}
}
from the command preprocess the data will be rendered and after clicking the next button, the postprocess will be invoked and the validation for the url...

Answer 1

Resolved this issue by implementing moreGamesUrls as a global variable(which stored the values even after the error is thrown)