Parameterized update query for SQLite database using angular js and ionic framework

I want to update data in the table where the username matches with the one already in table but I am unable to do so far. Suggest the changes.
index.html

<script id="my-popover.html" type="text/ng-template">
  <ion-popover-view>
    <ion-header-bar>
      <h1 class="title">Settings</h1>
    </ion-header-bar>
    <ion-content>
      <div class="list">
        <a class="item" ui-sref="changepassword" ng-click="hidePopover()">
          Change Password
        </a>
        <a class="item" ui-sref="login" ng-click="hidePopover()">
          Logout
        </a>
      </div>
    </ion-content>
  </ion-popover-view>
</script>

<ion-view view-title="Add Item">
  <ion-nav-buttons side="secondary">
    <button class="button button-icon ion-ios-gear"  ng-click="openPopover($event)">
    </button>
  </ion-nav-buttons>
<ion-content>
<div class="list"><br>
 <form name="myForm" ng-submit="createSlide(addslide,formadd_slide)">

    <h4> &nbsp;&nbsp;&nbsp;  <input type="radio" ng-model="rad1" value="precious" > Precious
         &nbsp;&nbsp;&nbsp;<input type="radio" ng-model="rad1" value="semi-precious"> Semi-Precious</h4> <br/>

   <label class="item item-input item-stacked-label">
     <span class="input-label">Username</span>
     <input type="text" ng-model="text1">
   </label>
   <label class="item item-input item-stacked-label">
    <span class="input-label">Type Of Purchase</span>
    <input type="text" ng-model="purchasetype">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Name Of Stone</span>
    <input type="text" ng-model="stonename">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Size</span>
    <input type="text" ng-model="size">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Total Weight(Cts)</span>
    <input type="text" ng-model="weight">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Pieces</span>
    <input type="text" ng-model="pieces">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Dimension</span>
    <input type="text" ng-model="dimension">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Color</span>
    <input type="text" ng-model="color">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Shape</span>
    <input type="text" ng-model="shape">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Origin</span>
    <input type="text" ng-model="origin">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Treatment Remark</span>
    <input type="text" ng-model="treatment">
  </label>
    <label class="item item-input item-stacked-label">
      <span class="input-label">Certificate Agency</span>
      <input type="text"ng-model="certi">
    </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Expected Sales Price/Carat</span>
    <input type="text" ng-model="salesPrice">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Stock ID</span>
    <input type="text" ng-model="stockid">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Supplier reference certificate number</span>
    <input type="text" ng-model="certificatenum">
  </label>
  <label class="item item-input item-stacked-label">
    <span class="input-label">Purchase Price</span>
    <input type="text" ng-model="purchase">
  </label>
 </form>
</div>
  <div class="padding">
    <button ng-click="takePicture()" class="button button-block button-calm">Take Picture</button>
    <button ng-click="takePhoto()" class="button button-block button-positive">Choose Picture</button>
  </div>
  <div class="list card">
    <div class="item item-image">
      <img src="{{pictureUrl}}">
    </div>
  </div>

  <p>
    <button class="button button-block button-calm" ng-click="enter(text1,rad1,purchasetype,stonename,size,weight,pieces,dimension,color,shape,origin,treatment,certi,salesPrice,stockid,certificatenum,purchase,pictureUrl)">Submit</button>
    <!--<input type="submit" ng-click="enter(purchasetype,stonename,Size,weight,pieces,dimension,Color,Shape,Origin,treatment,certi,salesPrice,stockid,certificatenum,purchase)"> -->
  </p>
</ion-content>
</ion-view>  

App.js

$scope.enter = function (userName,precious,purchasetype, stonename, size, weight, pieces, dimension, color, shape, origin, treatment, certi, salesprice,
                           stockid, certificatenum, purchase, image) {
    var query20 = "UPDATE gems_item_list set precious=?,purchasetype=?,stonename=?,size=?,weight=?,pieces=?,dimension=?,color=?,shape=?,origin=?,treatment=?,certi=?,salesprice=?,stockid=?,certificatenum=?,purchase=?, image=? where username=?";
     $cordovaSQLite.execute(db, query20, [userName,precious,purchasetype, stonename, size, weight, pieces, dimension, color, shape, origin, treatment, certi, salesprice, stockid, certificatenum, purchase, image]).then(function (res) {
       var alertPopup = $ionicPopup.alert({
        title: 'Successful!',
        template: 'Record entered!'
      });
      $scope.createSlide = function(slide,myForm){
        $scope.myForm.$setPristine();
        $scope.myForm.$setUntouched();
      }

    }, function (err) {
      console.log(err);
      window.alert(err);
      });

  };

Please help me . I am stuck here. Thanks in advance :)