How to get a list of checked boxes in grails - list

Question

In grails, I am trying to get a list of checked check boxes.
I have the list of check boxes, but my issues are two:
1) when I click on a single item in the list and click submit - I only get the value "on". If I click more than one check box item, I get something like this:
[Ljava.lang.String;#5a37f9f7
2). I do not get a list or the name of the item checked.
Here is my code for the check boxes in the gsp:
<g:form action="submitForm">
<ul class="columns3">
<g:each in="${name}" var="fileName" >
<g:checkBox value="${false}" name="${ 'fileName'}" /> ${fileName.replaceFirst(~/\.[^\.]+$/, '')}<br>
</g:each>
</ul>
<br>
<br>
<g:submitButton name="Submit"/>
</g:form>
and here is the controller code (groovy):
class Read_dirController {
def index() {
def list = []
def dir = new File("/home/ironmantis/Documents/business/test_files")
dir.eachFileRecurse (FileType.FILES) { file ->
list << file
}
list.each {
println it.name.replaceFirst(~/\.[^\.]+$/, '')
}
render(view: "index", model: [name:list.name])
params.list('fileName')
}
def displayForm() { }
def submitForm(String fileName) {
render fileName
//render(view: "tests_checked", fileName)
}
}
I tried to bind an id to the check boxes, but I keep getting an exception error.
Any help you can give I truly appreciate it; I am new to grails.
ironmantis7x

Answer 1

You can use the beautiful command object for this. For this ,first make a class RequestCO having the boolean fields.
class RequestCO {
boolean isChecked;
String name;
}
And
class RequestParentCO {
List<RequestCO> requestCOs = [].withLazyDefault { new RequestCO() }
}
Now you just simply bind all your request to RequestParentCO in your action:
def submitForm(RequestParentCO parentCO) {
println parentCO.requestCOs.findAll { it.isChecked }
}
This will give you all the checked checkboxes results.
GSP
<g:form action="process">
<ul class="columns3">
<g:each in="${["one", "two", "three"]}" var="fileName" status="i">
<g:hiddenField name="requestCOs[${i}].name" value="${fileName}"/>
<g:checkBox name="requestCOs[${i}].isChecked"/> ${fileName}<br>
</g:each>
</ul>
<g:submitButton name="Submit"/>

Answer 2

This way,
def submitForm() {
def values = request.getParameterValues("fileName")
//here values contains string array which are selected in checkbox
}

Answer 3

you can use request.getParameterValues("fileName") method, this will give selected checkbox in string array