backbone-formview.js
function (key) {
            var modelVal = this.getModelVal();
            modelVal = this.multiple ? modelVal : [modelVal];
            return (_.indexOf(_.map(modelVal, toStr), toStr(key)) > -1);
        }
function (key) {
            var modelVal = this.getModelVal();
            modelVal = this.multiple ? modelVal : [modelVal];
            return (_.indexOf(_.map(modelVal, toStr), toStr(key)) > -1);
        }
function ( key ) { var modelVal = this . getModelVal ( ) ; modelVal = this . multiple ? modelVal : [ modelVal ] ; return ( _ . indexOf ( _ . map ( modelVal , toStr ) , toStr ( key ) ) > - 1 ) ; }
Returns true or false if the option should be selected
@memberOf Backbone.fields.SelectListView#
@param {string} key The key of the possibleVal that is being tested
@return {boolean}
Returns true or false if the option should be selected