Default a g:checkBox to checked?

[Joe Nelson]

OK, Ive been fighting this for a while and cannot figure it out. I'm new to Grails, so have mercy.

I have a need to set a checkbox as checked as the default. I've been able to get the checkbox to work with my query when I leave it as unchecked as default.

My checkbox definitions is:

                        <div class="colRow">
                            <span class="colL column1">
                                Duplicates:
                            </span>
                            <span class="colL colum2">
                                <g:checkBox name="areDuplicatesExcluded" value="${params.areDuplicatesExcluded}" /> <span style="font-size: .85em;">Exclude Duplicates When Checked.</span>
                            </span>
                            <span class="clearFloat"></span>
                        </div>

I have tried setting the "checked" attribute and I've tried various permutations of setting the params.areDuplicatesExcluded in my controller. But so far, everything I have tried either has no effect at all, or sets the parameter to checked no matter how the box is set.

I know this should be easy, but I have hit a brick wall.

Any help would be appreciated. How do I default the checkbox to checked and still get it to work?