javascriptangularjsangularjs-http

$http.get to handle two different calls

I am trying to call a endpoint using $http.get and check if the succsess code is 200 then use the response data otherwise I need to call other endpoint. I tried to check if the call is success or error like below,

    $scope.getRequest = function () {
        var url = $rootScope.BaseURL;
        var config = {
            headers: {
                'Authorization': `Basic ${$scope.key}`,
                'Prefer': 'odata.maxpagesize=10000'
            }
        };
        $http.get(url, config)
            .success(
            function (response) { // success async
                $scope.viewRequest.data = response.data;
            })
            .error(function (response) { // failure async
                var url = $rootScope.diffURL;
                $http.get(url, config)
                    .success(
                    function (response) { // success async
                        $scope.viewRequest.data = response.data;
                    })
                    .error(function (response) { // failure async
                        console.log("There was an error getting the request from CORE");
                    });
            });
    };

I was hoping if the call to $scope.BaseURL fails it will go to the error function and calls the $scope.diffURLreturns the response but I am getting below errors

angular.js:14800 TypeError: $http.get(...).success is not a function

GET https:\\example.com\... 400 (Bad Request)

Possibly unhandled rejection: {"data":{"error":{"code":"1001","message":" The property, used in a query expression, is not defined in type 'T'."}},"status":400,"config":{"method":"GET","transformRequest":[null],"transformResponse":[null],"jsonpCallbackParam":"callback","headers":{"Authorization":"Basic 0h","Prefer":"odata.maxpagesize=10000","Accept":"application/json, text/plain, /"},"url":"https://example.com...,"statusText":"Bad Request","xhrStatus":"complete"}`

How can I approach this. enter image description here

Solution

  • To achieve expected use below option of chaining API calls with $http.get with then instead of success ,as it is used to Angularjs version 1.3 and from above 1.3 use .then()

    $http.get('<url>')  // Replace url, url2 with actual urls
   .then(function(response){

   }, function(error){
     $http.get('<url2>')
   .then(function(response2){
      // Handle response
   }, function(error2){

   }
   })

    working code sample for reference

    var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $http) {
$scope.main= '';
  $http.get("https://output.jsbin.com/http-promise-chain-json/14.json") //Invalid URL
  .then(function(response) {
console.log("success first call")
     $scope.main= response.data;
  }, function(error){
console.log("error")
    $http.get("https://output.jsbin.com/http-promise-chain-json/1.json")
  .then(function(response) {
      $scope.myWelcome = response.data;
  }, function(error) {
      
  })
  });
});
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>

<div ng-app="myApp" ng-controller="myCtrl"> 

<h1>{{myWelcome}}</h1>
<h1>{{main}}</h1>

</div>

<script>

</script>

</body>

    codepen - https://codepen.io/nagasai/pen/jgOgmV