Segmented out from main source

+define(['rivets'], function(rivets) {
+    rivets.binders['error-*'] = {
+        bind: function(el) {
+            var self = this;
+            var holder = this.validationHolder = {
+                marker: el.parentNode.insertBefore(document.createComment(" rivets: " + this.type + " "), el),
+                focus: function() {
+                    $(holder.container).removeClass('focused');
+                },
+                blur: function() {
+                    holder.lastObj.seen(holder.lastId, true);
+                    $(holder.container).addClass('focused');
+                    holder.lastObj.validate();
+                },
+                validated: function(isValid, model, errors) {
+                    var errorList = errors[holder.lastId];
+                    var $container = $(holder.container);
+                    var $fieldErrors = $container.find('> .validationfielderrors').empty();
+                    if (errorList && holder.lastObj.seen(holder.lastId)) {
+                        $container.addClass('has-errors');
+                        require(['text!templates/fielderrorpopup.html!strip'], function(templateHtml) {
+                            $fieldErrors.empty().append($($.parseHTML(templateHtml)).find('.template-content').append($.parseHTML(errorList)).end());
+                        });
+                    } else {
+                        $container.removeClass('has-errors');
+                    }
+                }
+            };
+            holder.container = $.parseHTML('<span class="validationerrorcontainer"><div class="validationfielderrors"></div></span>');
+            $(holder.container).removeClass('focused');
+            $(holder.marker).after($(holder.container).append(el));
+            diveIntoObject(this.model, this.keypath, function(obj, id) {
+                holder.lastObj = obj;
+                holder.lastId = id;
+                obj.on('validated', holder.validated);
+            });
+            $(el).on('focus', holder.focus).on('blur', holder.blur);
+            rivetsBinderCall(this, this.args[0], 'bind', arguments);
+        },
+        unbind: function(el) {
+            var holder = this.validationHolder;
+            $(this.validationHolder.marker).after(el).remove();
+            $(el).off('focus', holder.focus).off('blur', holder.blur);
+            diveIntoObject(this.model, this.keypath, function(obj, id) {
+                obj.off('validated', holder.validated);
+            });
+            delete this.validationHolder;
+            rivetsBinderCall(this, this.args[0], 'unbind', arguments);
+        },
+        routine: function(el, value) {
+            rivetsBinderCall(this, this.args[0], 'routine', arguments);
+        }
+    };
+});