How to get hidden input value that was dynamically stored using AngularJS - angularjs

Question

I'm trying to implement search method for "chat channels" that for every query it represents the compatible results from SQL table from the database.Each result can be distinguished by a unique ID that is also comes from the SQl table.I don't want to show the ID's so I put them in a hidden input for each result using ng-model.Also, for each, result the user have a possibility to subscribe to the channel (subscribe button) displayed in this result,so in order to save the subscription properly,I need to get the ID saved in the hidden input of the same result.
Here's what I tried:
<table class="table table-condensed">
<tr class="separating_line" ng-repeat="x in result">
<!-- ng-bind-html allows to bind a variable to the innerHTML part of the HTML element -->
<td>
<div class="col-md-8">
<h4><b style="color: gray;">{{ x.Name }}</b></h4>
<br><p> {{ x.Description }}</p>
</div>
<div class="col-md-2">
<small><label style="color: gray;">Subscribers </label>{{ x.Subscribersnum }}</label></small><br>
<input id="hiddenId" hidden="hide" ng-model="idval=x.ChanID" />
<button ng-click="subscribechannel()" class="btn btn-primary">Subscribe</button>
</div>
</td>
</tr>
</table>
In the controller I send it in the following way to convenient Servlet:
$http.get("http://localhost:8080/ExampleServletv3/subscribeservlet",{
params: {
subidval: $scope.idval
}
})
But when debugging the value that I get in the servlet is null.
How can I solve this? Any ideas?
Thanks

Answer 1

You don't need any hidden field to do what you want. All you need is to pass a parameter to your function:
<tr class="separating_line" ng-repeat="x in result">
...
<button ng-click="subscribechannel(x)" class="btn btn-primary">Subscribe</button>