I'm trying to use a Checkboxlist in MonoRail to represent a many to many table relationship. There is a Special table, SpecialTag table, and then a SpecialTagging table which is the many to many mapping table between Special and SpecialTag.

Here is an excerpt from the Special model class:

[HasAndBelongsToMany(typeof(SpecialTag),
        Table = "SpecialTagging", ColumnKey = "SpecialId", ColumnRef = "SpecialTagId")]
        public IList<SpecialTag> Tags { get; set; }

And then in my add/edit special view:

$Form.LabelFor("special.Tags", "Tags")<br/>
    #set($items = $FormHelper.CreateCheckboxList("special.Tags", $specialTags))
        #foreach($specialTag in $items)
            $items.Item("$specialTag.Id") $Form.LabelFor("$specialTag.Id", $specialTag.Name) 
    #end

The checkboxlist renders correctly, but if I select some and then click Save, it doesn't save the special/tag associations to the SpecialTagging table (the entity passed to the Save controller action has an empty Tags list.) One thing I noticed was that the name and value attributes on the checkboxes are funky:

<label for="special_Tags">Tags</label><br>
                    <input id="3" name="special.Tags[0]" value="UCampus.Core.Models.SpecialTag" type="checkbox"> <label for="3">Buy 1 Get 1 Free</label> 
            <input id="1" name="special.Tags[1]" value="UCampus.Core.Models.SpecialTag" type="checkbox"> <label for="1">Free</label> 
            <input id="2" name="special.Tags[2]" value="UCampus.Core.Models.SpecialTag" type="checkbox"> <label for="2">Half Price</label> 
            <input id="5" name="special.Tags[3]" value="UCampus.Core.Models.SpecialTag" type="checkbox"> <label for="5">Live Music</label> 
            <input id="4" name="special.Tags[4]" value="UCampus.Core.Models.SpecialTag" type="checkbox"> <label for="4">Outdoor Seating</label> 

Anyone have any ideas?

Thanks! Justin