Retrieving the $scope data from within an http.get callback

Question

Retrieving the $scope data from within an http.get callback

Would someone be able to assist me with storing the data returned by the $http.get function in a $scope variable for use in my ui-grid control?

I have tried the code below but seem to be missing something simple. I just can't figure out what it is:

app.controller('AdminUsersGridCtrl', function ($scope, $http, uiGridConstants) {

    $http.get('/api/admin/user')
    .success(function (response, $scope) {
        $scope.myData = response;
    })
    .error(function (error) {
        console.log(error);
    });

    console.log($scope.myData);

    $scope.gridOptions = {
      data: 'myData',
      enableFiltering: true,
      columnDefs: [
        { field: 'firstName' },
        { field: 'lastName' },
        { field: 'jobTitle'},
        {
          field: 'email',
          filter: {
            condition: uiGridConstants.filter.ENDS_WITH,
            placeholder: 'ends with'
          }
        },
        {
          field: 'phone',
          filter: {
            condition: function(searchTerm, cellValue) {
              var strippedValue = (cellValue + '').replace(/[^\d]/g, '');
              return strippedValue.indexOf(searchTerm) >= 0;
            }
          }
        },
      ]
    };        

  });

When I check the console inside the success function, it prints undefined. What can I do to access the original $scope inside the $http.get success function?

javascript angularjs

Answer 1

Answer №1

When I check my console on success, it shows 'undefined'.

However, your console log is not inside the success method. It should be placed within:

$http.get('/api/admin/user')
.success(function (response) {
    $scope.myData = response;
    console.log($scope.myData);
})
.error(function (error) {
    console.log(error);
});

It should not be here:

// order of events..
// #1...first $http
$http.get('/api/admin/user')
.success(function (response) {
    //... #3 third. Now finally response is defined. the end
    $scope.myData = response;
})
.error(function (error) {
    console.log(error);
});

//... #2 second. $scope.myData definitely IS undefined
console.log($scope.myData);

There is a significant difference. Additionally, there is no requirement to use $scope in the success callback. This is not a common practice. Where did you come across this technique?

Answer 2

When I check my console on success, it shows 'undefined'.

However, your console log is not inside the success method. It should be placed within:

$http.get('/api/admin/user')
.success(function (response) {
    $scope.myData = response;
    console.log($scope.myData);
})
.error(function (error) {
    console.log(error);
});

It should not be here:

// order of events..
// #1...first $http
$http.get('/api/admin/user')
.success(function (response) {
    //... #3 third. Now finally response is defined. the end
    $scope.myData = response;
})
.error(function (error) {
    console.log(error);
});

//... #2 second. $scope.myData definitely IS undefined
console.log($scope.myData);

There is a significant difference. Additionally, there is no requirement to use $scope in the success callback. This is not a common practice. Where did you come across this technique?

Answer 3

Answer №2

Is it more beneficial to make a server call by utilizing a service in an external file? In your specific scenario, the $scope does not receive the response due to the code being executed before the service is complete. Consider using a $timeout or a similar approach:

app.controller('AdminUsersGridCtrl', function ($scope, $http, uiGridConstants) {

$http.get('/api/admin/user').success(function (response) {
    $scope.myData = response;
    fillGridOptions();
}).error(function (error) {
    console.log(error);
});

function fillGridOptions() {
$scope.gridOptions = {
    data: 'myData',
    enableFiltering: true,
    columnDefs: [
      { field: 'firstName' },
      { field: 'lastName' },
      { field: 'jobTitle' },
      {
          field: 'email',
          filter: {
              condition: uiGridConstants.filter.ENDS_WITH,
              placeholder: 'ends with'
          }
      },
      {
          field: 'phone',
          filter: {
              condition: function (searchTerm, cellValue) {
                  var strippedValue = (cellValue + '').replace(/[^\d]/g, '');
                  return strippedValue.indexOf(searchTerm) >= 0;
              }
          }
      },
    ]
};

}

});

Answer 4

Is it more beneficial to make a server call by utilizing a service in an external file? In your specific scenario, the $scope does not receive the response due to the code being executed before the service is complete. Consider using a $timeout or a similar approach:

app.controller('AdminUsersGridCtrl', function ($scope, $http, uiGridConstants) {

$http.get('/api/admin/user').success(function (response) {
    $scope.myData = response;
    fillGridOptions();
}).error(function (error) {
    console.log(error);
});

function fillGridOptions() {
$scope.gridOptions = {
    data: 'myData',
    enableFiltering: true,
    columnDefs: [
      { field: 'firstName' },
      { field: 'lastName' },
      { field: 'jobTitle' },
      {
          field: 'email',
          filter: {
              condition: uiGridConstants.filter.ENDS_WITH,
              placeholder: 'ends with'
          }
      },
      {
          field: 'phone',
          filter: {
              condition: function (searchTerm, cellValue) {
                  var strippedValue = (cellValue + '').replace(/[^\d]/g, '');
                  return strippedValue.indexOf(searchTerm) >= 0;
              }
          }
      },
    ]
};

}

});

Retrieving the $scope data from within an http.get callback

Answer №1

Answer №2

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