Populate select boxes from file in Grails [closed] - file

Question

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 8 years ago.
Improve this question
I have 2 select boxes in my app and they are populated from db, when I choose a value from first select box, second select box is populate via ajax. this scenarion works great. but as the values in select boxes are static I didn't want populate them from db, I think use for this a file is more usefull and good for app performance. so how I can populate them from file (json, xml, etc.)? first select box to the second is one-to-many

Answer 1

This sounds like a lot of work since your going to have to populate the text files from db. Infact its end result will be in effect no different to a caching solution.http://mrdustmite.blogspot.co.uk/2010/09/simple-ehcache-in-grails.html?m=1
The mentioned plugin above generates primary/secondary values from as JSON values..
https://github.com/vahidhedayati/ajaxdependancyselection/blob/master/grails-app/services/ajaxdependancyselection/AutoCompleteService.groovy
def selectSecondary(params) {
if (params.domain2) {
def domainClass = grailsApplication?.getDomainClass(params?.domain2)?.clazz
def query = {
eq params.bindid, params.id.toLong()
projections {
property(params.collectField)
property(params.searchField)
}
order(params.searchField)
}
def results =domainClass.createCriteria().list(query)
def primarySelectList = []
results.each {
def primaryMap = [:]
primaryMap.put('id', it[0])
primaryMap.put('name', it[1])
primarySelectList.add(primaryMap)
}
return primarySelectList as JSON
}
}
https://github.com/vahidhedayati/ajaxdependancyselection/blob/master/grails-app/taglib/ajaxdependancyselection/AutoCompleteTagLib.groovy
def gsattrs=['optionKey' : "${attrs.collectField}" , 'optionValue': "${attrs.searchField}", 'id': "${attrs.id}", 'value': "${attrs.value}", 'name': "${name}"]
gsattrs['from'] = primarylist
gsattrs['noSelection'] =attrs.noSelection
gsattrs['onchange'] = "${remoteFunction(controller:''+attrs.controller+'', action:''+attrs.action+'', params:'\'id=\' + escape(this.value) +\'&setId='+attrs.setId+'&bindid='+ attrs.bindid+'&collectField='+attrs.collectField2+'&searchField='+attrs.searchField2+'&domain2='+attrs.domain2+'&controller='+attrs.controller+'\'',onSuccess:''+attrs.id+'Update(data)')}"
def link = ['action': attrs.action , 'controller': attrs.controller ]
out<< g.select(gsattrs)
You should be able to use the functionality to reproduce the same effect from a text file if you so wish to go down this route...