Angular checkmark for list elements - angularjs

Question

I am trying to have checkmarks in a list for those list elements where a certain condition is met.
My Html:
<div class="col col-70" ng-if="showBothEnterLists">
<ion-list>
<ion-item ng-repeat="w in word_pair | limitTo:4">
<input placeholder="Enter word" type="text" ng-model="word">
<input placeholder="Enter pair" type="text" ng-model="pair" ng-change="check(word, pair)">
<div ng-show="showCheckMark" align="right"><i class="ion-checkmark myCheckmark"></i></div>
</ion-item>
</ion-list>
</div>
Corresponding code in my controller:
$scope.word_pair = [
{'word':'Carla', 'pair':'Lion'},
{'word':'Sophie', 'pair':'Lotta'},
{'word':'Jannes', 'pair':'Stubbi'},
{'word':'Martin', 'pair':'Wolle'},
{'word':'Flo', 'pair':'Ign'},
{'word':'Rere', 'pair':'Rose'},
{'word':'Jean', 'pair':'Tamara'},
{'word':'Memo', 'pair':'Elk'},
{'word':'Nila', 'pair':'Naph'}
]
...
$scope.check = function(word, pair) {
for(var i=0; i < $scope.word_pair.length; i++) {
if($scope.word_pair[i].word == word && $scope.word_pair[i].pair == pair) {
$scope.showCheckMark=true
$scope.checkCount++
}
}
}
However, this code gives me checkmarks for all list items when condition for the first item is met.
How can I fix this?

Answer 1

UPDATE without remapping
create an object in your scope that will hold the user's answers
$scope.answers = {}
set the ng-model of each input in conjunction with the $index
<ion-item ng-repeat="w in word_pair | limitTo:4">
<input placeholder="Enter word" type="text" ng-model="answers['word'+$index]">
input placeholder="Enter pair" type="text" ng-model="answers['pair'+$index]" ng-change="check(word, pair)">
<div ng-show="showCheckMark(answers['word'+$index], answers['pair'+$index])" align="right"><i class="ion-checkmark myCheckmark"></i>asdadas</div>
</ion-item>
Finally the only thing showCheckMark has to do is check if the key and value exist
$scope.showCheckMark = function(word, pair){
return $scope.word_pair.filter( item => item.word == word && item.pair == pair).length;
}
Here is a working example in Codepen