Accessing a list of params in controller

Question

Im very new to grails (1.3.7) so please be patient :-)

I have a gsp where I have various checkboxes. A user can click on them and then send his answer to a controller. T

Answer 1

It must be passed as an extra request parameter (it's a limitation of http). You can add following field into your form, for example:

<input type="hidden" name="checkboxes" value="${myCheckboxesNames.join(',')}"/>

or making same using JavaScript, as it names are dynamic on client side.

BTW, you can also check all request parameters, by

params.each { name, value ->
// so something
}

so if you are using some special prefix/suffix for this checkbox names, it would be:

params.entrySet().findAll {
   it.key.startsWith(prefix)
}.each {
   println "Checkbox $it.key = $it.value"
}