Sending arguments to Angular Factory from controller

Question

Sending arguments to Angular Factory from controller

Is there a way to pass parameters from an Angular controller to a factory? I'm having trouble passing the parameter, it works fine without it but not when I try to pass it.

var app = angular.module('employee', ['ui.grid', 'ui.grid.saveState', 'ui.grid.selection', 'ui.grid.cellNav', 'ui.grid.resizeColumns', 'ui.grid.moveColumns', 'ui.grid.pinning', 'ui.bootstrap', 'ui.grid.autoResize','ui.grid.pagination']);

app.controller('EmpCtrl', ['$scope', '$http', '$interval', '$modal', '$log', 'gridService', function ($scope, $http, $interval, $modal, $log, gridService) {
    $scope.LoadNextPage = gridService.LoadNextPage("5");
}]);

var gridService = function ($http, $rootScope) {
    return {
        LoadNextPage: function (hh) {
            alert(hh);
        },
        gridOptions:gridOptions
    };
};

app.factory('gridService', ['$http', '$rootScope', gridService]);

This is how I use it in the view:

<span id="pcNext"
      class="glyphicon glyphicon-step-forward"
      ng-click="LoadNextPage()">
</span>

javascript angularjs mvvm

Answer 1

Answer №1

The issue lies within your controller:

$scope.LoadNextPage = gridService.LoadNextPage("5");

This indicates that your LoadNextPage is not actually a function, but rather a value resulting from the invocation of a function in your service. This function does not return anything and simply displays an alert. However, in your view, you are treating LoadNextPage as if it were a callable function...

To resolve this, update your controller so that LoadNextPage becomes a functional reference that can be invoked from the view.

$scope.LoadNextPage = gridService.LoadNextPage;

Then, in your view:

<span id="pcNext"
      class="glyphicon glyphicon-step-forward"
      ng-click="LoadNextPage(5)">
</span>

This adjustment should address the issue.

Note: It seems likely that your gridOptions are defined elsewhere in your code, outside the scope provided in your question, which prevents an error due to a missing object. Therefore, I assume this discrepancy is a typo in your code rather than the root cause of the problem.

Prefer not to use parameters in your view?

No worries. You have options such as creating a wrapper function or binding specific parameters within your code:

// wrap
$scope.LoadNextPage = function() {
    return gridService.LoadNextPage("5");
};

// bind
$scope.LoadNextPage = gridService.LoadNextPage.bind(this, 5);

Alternatively, you can incorporate the number directly into your service...

Answer 2

The issue lies within your controller:

$scope.LoadNextPage = gridService.LoadNextPage("5");

This indicates that your LoadNextPage is not actually a function, but rather a value resulting from the invocation of a function in your service. This function does not return anything and simply displays an alert. However, in your view, you are treating LoadNextPage as if it were a callable function...

To resolve this, update your controller so that LoadNextPage becomes a functional reference that can be invoked from the view.

$scope.LoadNextPage = gridService.LoadNextPage;

Then, in your view:

<span id="pcNext"
      class="glyphicon glyphicon-step-forward"
      ng-click="LoadNextPage(5)">
</span>

This adjustment should address the issue.

Note: It seems likely that your gridOptions are defined elsewhere in your code, outside the scope provided in your question, which prevents an error due to a missing object. Therefore, I assume this discrepancy is a typo in your code rather than the root cause of the problem.

Prefer not to use parameters in your view?

No worries. You have options such as creating a wrapper function or binding specific parameters within your code:

// wrap
$scope.LoadNextPage = function() {
    return gridService.LoadNextPage("5");
};

// bind
$scope.LoadNextPage = gridService.LoadNextPage.bind(this, 5);

Alternatively, you can incorporate the number directly into your service...

Answer 3

Answer №2

An error is being thrown because gridOptions:gridOptions is not defined in this context. To resolve the issue, remove ,gridOptions:gridOptions from the factory section.

To see a working example, refer to the snippet below and compare it with your code:

var app = angular.module('employee', []);
app.controller('EmpCtrl', ['$scope', 'gridService', function ($scope, gridService) {
 $scope.clickMe = function() {
   $scope.LoadNextPage = gridService.LoadNextPage("5");
 }
}]);
var gridService = function() {
  return {
    LoadNextPage: function (hh) {
     alert(hh);
   }
 };
};
app.factory('gridService', ['$http', '$rootScope', gridService]);

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="employee" ng-controller="EmpCtrl">
  <button ng-click="clickMe()">Button</button>
</div>

Answer 4

An error is being thrown because gridOptions:gridOptions is not defined in this context. To resolve the issue, remove ,gridOptions:gridOptions from the factory section.

To see a working example, refer to the snippet below and compare it with your code:

var app = angular.module('employee', []);
app.controller('EmpCtrl', ['$scope', 'gridService', function ($scope, gridService) {
 $scope.clickMe = function() {
   $scope.LoadNextPage = gridService.LoadNextPage("5");
 }
}]);
var gridService = function() {
  return {
    LoadNextPage: function (hh) {
     alert(hh);
   }
 };
};
app.factory('gridService', ['$http', '$rootScope', gridService]);

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="employee" ng-controller="EmpCtrl">
  <button ng-click="clickMe()">Button</button>
</div>

Answer 5

Answer №3

It seems like you have not defined the gridOptions function. Please refer to this link for more information:

angular.module("myApp", []).controller("myCon", function($scope, $interval, gridService){

  $scope.LoadNextPage = gridService.LoadNextPage("5");
}).factory('gridService', ['$http', '$rootScope', gridService]);

function gridService($http, $rootScope){
  return {
        LoadNextPage: function (hh) {
            alert(hh);
        }
    };
}

Click here to see the link

Answer 6

It seems like you have not defined the gridOptions function. Please refer to this link for more information:

angular.module("myApp", []).controller("myCon", function($scope, $interval, gridService){

  $scope.LoadNextPage = gridService.LoadNextPage("5");
}).factory('gridService', ['$http', '$rootScope', gridService]);

function gridService($http, $rootScope){
  return {
        LoadNextPage: function (hh) {
            alert(hh);
        }
    };
}

Click here to see the link

Sending arguments to Angular Factory from controller

Answer №1

Prefer not to use parameters in your view?

Answer №2

Answer №3

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