Binding not working using angular on Ionic - angularjs

Question

I'm using angular to populate a form, which can be edited. But the edits are not being captured by the scope variables.
Here's my code:
HTML code:
<div class="list">
<label class="item item-input">
<span class="input-label">Name</span>
<span>{{name}}</span>
</label>
<label class="item item-input">
<span class="input-label">Locality</span>
<span>{{locality}}</span>
</label>
<label class="item item-input">
<span class="input-label">City</span>
<span>{{city}}</span>
</label>
<label class="item item-input">
<span class="input-label">Amenities</span>
<input type="text" placeholder="Amenities" ng-model="amenities">
</label>
<label class="item item-input">
<span class="input-label">Total Rooms</span>
<input type="text" placeholder="Total Rooms" ng-model="trooms">
</label>
</div>
<div class="text-center">
<button class="button button-positive" ng-click="hotelUpdate()">
Save Edits
</button>
</div>
hotelUpdate() :
$scope.hotelUpdate = function() {
var hotel1 = {
objectId: $state.params.hotelId,
amenities: $scope.amenities,
free_rooms: $scope.frooms,
total_rooms: $scope.trooms
}
Backendless.Data.of( "Hotels" ).save(hotel1)
.then(function(savedObject){
console.log(savedObject);
})
.catch(function(error){
console.log(error);
})
}
}
Is there something wrong with the code? On using binding previously the same way, it has worked fine.

Answer 1

Before the function cal,declare a scope variable $scope.hotel = {},
In HTML code,change ng-model like ng-model = "hotel.amenities",
In controller,change the code to
var hotel1 = {
objectId: $state.params.hotelId,
amenities: $scope.hotel.amenities,
free_rooms: $scope.hotel.frooms,
total_rooms: $scope.hotel.trooms
}