title: Knockout js validation plugin issues when validating an observableArray of observables
body: <p>I have an observable array of observables - each observable has been extended for require however when i save the form with cleared fields it does not collect error or have any errors to show -</p>
  
  <pre><code>ko.validation.configure({
      grouping: {
          deep: true,
          observable: true
      }
  });
  
  
  var viewModel = function () {
      var self = this;
      var data = {
          "deadzone": "0.2",
              "sloperange": "2",
              "stepsize": "0.8",
              "setpoint": "0.75",
              "pressure": "1"
      };
      self.defaultCalculations = ko.observableArray([]);
      self.defaultCalculationProperties = function (defaults) {
          var self = this;
          var properties = defaults;
          self.deadzone = ko.observable(properties.deadzone || '').extend({
              required: {
                  message: '*required'
              }
          });
          self.sloperange = ko.observable(properties.sloperange || '').extend({
              required: {
                  message: '*required'
              }
          });
          self.stepsize = ko.observable(properties.stepsize || '').extend({
              required: {
                  message: '*required'
              }
          });
          self.setpoint = ko.observable(properties.setpoint || '').extend({
              required: {
                  message: '*required'
              }
          });
          self.pressure = ko.observable(properties.pressure || '').extend({
              required: {
                  message: '*required'
              }
          });
  
      };
      //populate calculation values
      self.populateCalculationDefaults = function (data) {
  
          //pushing data to an array and mapping each item
          var temp = [];
          temp[0] = data;
          var mappedTasks = _.map(temp, function (item) {
              return new self.defaultCalculationProperties(item);
          });
  
          self.defaultCalculations(mappedTasks);
      };
  
      self.save = function (model) {
          //console.log(model);
          console.log(self.errors().length, self.errors.showAllMessages());
          if (self.errors().length != 0) {
              self.errors.showAllMessages();
          }
      };
      self.errors = ko.validation.group(self.defaultCalculations());
  
      self.populateCalculationDefaults(data);
  };
  
  ko.applyBindings(new viewModel());
  </code></pre>
  
  <p>Not sure what the problem is and have scoured over stackflow - any suggestions? </p>
  
  <p><a href="http://jsfiddle.net/kmcadams/W2SZb/" rel="nofollow">http://jsfiddle.net/kmcadams/W2SZb/</a> </p>