I want to have an array in the service, which can be modified from different controllers.
The purpose of this is the have an array accessible through every controller.
I want to be able to push items to this array from controllers, as well to delete them.
Service:
.service('EmailOps', function () {
var templates = [];
return {
pushToEmailBody: function (newObj) {
templates.push(newObj);
console.log(templates);
}
};
});
Controller:
angular.module('app')
.controller('mainCtrl', function ($scope, $rootScope, EmailOps) {
$scope.include = EmailOps.pushToEmailBody;
});
HTML:
<div ng-controller="mainCtrl">
1
2
3
</div>
To summarize, I would like to be able to add multiple new elements to the array in the service by clicking on these links. Currently when it adds one of them, it replaces the one added before, so that I have an array with one element only. Any idea what I might be doing wrong?
please see here : http://jsbin.com/gesirira/1/edit
service:
app.service('EmailOps', function () {
var templates = [];
function pushToEmailBody (newObj) {
templates.push(newObj);
console.log(templates);
}
return {
templates:templates,
pushToEmailBody : pushToEmailBody
};
});
controller:
app.controller('firstCtrl', function($scope,EmailOps){
$scope.include = function(obj)
{
EmailOps.pushToEmailBody(obj);
};
$scope.temp = EmailOps.templates;
});
html:
<body ng-app="app">
<div ng-controller="firstCtrl">
1
2
3
<br/>
templates: {{temp |json}}
</div>
</div>
</body>
You can modify your service like this
.service('EmailOps', function () {
this.templates = [];
this.pushToEmailBody = function (newObj) {
templates.push(newObj);
console.log(templates);
}
});
and then in the controller :
$scope.include = function(obj)
{
EmailOps.pushToEmailBody(obj);
};
Related
var app = angular.module('pixmall', []);
app.controller('myDashboard', function($scope, $http) {
app.filter('myRandom', function() {
return function (input) {
return Math.round(input);
}
});
<div ng-app="pixmall" ng-controller="myDashboard">
<span>{{30.35 | myRandom}}</span>
</div>
I want to use the filter to round the number to the nearest whole number but it is not working, I don't know what is wrong
Separate out the controller and filter, you should not place the filter within the controller code.
DEMO
var app = angular.module('pixmall', [])
app.controller("myDashboard",function($scope){
});
app.filter('myRandom', function() {
return function (input) {
return Math.round(input);
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.7/angular.min.js"></script>
<div ng-app="pixmall" ng-controller="myDashboard">
<span>{{30.35 | myRandom}}</span>
</div>
I need to pass an object from one controller to another and have used this solution but it is not working.
Here the code:
angular.module("customerApp", [])
.controller('MainCtrl', function ($scope, myService, $http, $location) {
var vm = this;
vm.pinFormCheck = function () {
vm.count++;
if (vm.pinForm.$valid && vm.details.PIN === vm.pin && vm.count <= 2) {
location.href = "http://localhost:51701/Home/MainMenu";
$scope.obj = {
'cid': 'vm.details.CID',
'name': 'vm.details.Name',
'pin': 'vm.details.PIN',
'bal': 'vm.details.Bal',
'status': 'vm.details.cardStatus'
};
console.log(vm.details.Bal);//the correct balance get displayed in console
} else {
vm.failPin = true;
}
};
})
.controller('CheckCtrl', function ($scope, myService) {
$scope.data = myService.getObj();
})
.factory('myService', function () {
var obj = null;
return {
getObj: function () {
return obj;
},
setObj: function (value) {
obj = value;
}
}
});
Here is the view from which the first object is passed:
<body ng-app="customerApp">
<div ng-controller="MainCtrl as vm">
<form name="vm.pinForm">
<input type="password" ng-model="vm.pin" ng-required="true" />
<p><button ng-disabled="vm.count >=3" ng-click="vm.pinFormCheck();" ng-init="vm.count=0">Proceed</button></p>
</form>
...
Here' the second view where I need the object
<html ng-app="customerApp">
<body ng-controller="CheckCtrl">
<div>
<h1>your balance is {{data.bal}}</h1>
....
The balance from vm.details.Bal from the first view must appear in data.bal in the second view, but nothing is appearing.
You can just save vm.details in some factory.
And then get it in CheckCtrl from this factory.
Factories in AngularJS implement singleton pattern. So saved data will be kept in until your app exists.
You tried to do next thing myService.getObj(); But you didn't save anything to the service.
Inject myService to the MainCtrl and then save details into it.
I have seen an unexpected behaviour in Angularjs with its factories.
I used a factory to communication between two controllers.
In the first scenario it is working fine but not in second one. The only difference between them is that in first example I am accessing the name from the view but in second one I am accessing in scope variable.
Scenario 1
<div ng-controller="HelloCtrl">
<a ng-click="setValue('jhon')">click</a>
</div>
<br />
<div ng-controller="GoodbyeCtrl">
<p>{{fromFactory.name}}</p>
</div>
//angular.js example for factory vs service
var app = angular.module('myApp', []);
app.factory('testFactory', function() {
var obj = {'name':'rio'};
return {
get : function() {
return obj;
},
set : function(text) {
obj.name = text;
}
}
});
function HelloCtrl($scope, testFactory) {
$scope.setValue = function(value) {
testFactory.set(value);
}
}
function GoodbyeCtrl($scope, testFactory) {
$scope.fromFactory = testFactory.get();
}
Scenario 2
<div ng-controller="HelloCtrl">
<a ng-click="setValue('jhon')">click</a>
</div>
<br />
<div ng-controller="GoodbyeCtrl">
<p>{{fromFactory}}</p>
</div>
//angular.js example for factory vs service
var app = angular.module('myApp', []);
app.factory('testFactory', function() {
var obj = {'name':'rio'};
return {
get : function() {
return obj;
},
set : function(text) {
obj.name = text;
}
}
});
function HelloCtrl($scope, testFactory) {
$scope.setValue = function(value) {
testFactory.set(value);
}
}
function GoodbyeCtrl($scope, testFactory) {
$scope.fromFactory = testFactory.get().name;
}
The difference is:
Scenario I
$scope.fromFactory = testFactory.get();
<div ng-controller="GoodbyeCtrl">
<p> {{fromFactory.name}}</p>
</div>
The $scope variable is set to testFactory.get() which is an object reference. On each digest cycle the watcher fetches the value of the property name using the object reference. The DOM gets updated with changes to that property.
Scenario II
$scope.fromFactory = testFactory.get().name;
<div ng-controller="GoodbyeCtrl">
<p>{{fromFactory}}</p>
</div>
The $scope variable is set to testFactory.get().name which is a primative. On each digest cycle, the primative value doesn't change.
The important difference is that when a reference value is passed to a function, and a function modifies its contents, that change is seen by the caller and any other functions that have references to the object.
I am new to angular-js. I have two controllers (welcomeContoller,productController) and both handling the same model within the factory.
When the model getting updating by one controller(productController) it should reflect the update in another controller. (welcomeContoller)
But its not happening now.
HTML code :
<body ng-app="myApp">
<div ng-controller="welcomeContoller">
{{totalProductCnt}}
</div>
<div ng-controller="productController">
<div class="addRemoveCart">
<span class="pull-left glyphicon glyphicon-minus" ng-click="removeProduct()"></span>
<span class="pull-right glyphicon glyphicon-plus" ng-click="addProduct(1)"></span>
</div>
</div>
JS code
var myApp = angular.module("myApp", ['ui.bootstrap']);
myApp.factory("productCountFactory", function() {
return {
totalProducts:0
};
});
myApp.controller("welcomeContoller", function($scope, productCountFactory)
{
$scope.totalProductCnt = productCountFactory.totalProducts;
});
myApp.controller("productController", function($scope, productCountFactory) {
$scope.addProduct = function() {
productCountFactory.totalProducts++;
alert(productCountFactory.totalProducts);
};
$scope.removeProduct = function() {
if(productCountFactory.totalProducts >=1)
productCountFactory.totalProducts--;
alert(productCountFactory.totalProducts);
};
});
Even after the addProduct is called the totalProductCnt is displaying as zero. I want to display the value for each increment.
Plunkr Link
Put the factory object reference on scope:
myApp.controller("welcomeContoller", function($scope, productCountFactory) {
$scope.productCountFactory = productCountFactory;
});
Watch the property of the object.
{{productCountFactory.totalProducts}}
The DEMO on PLNKR.
By putting a reference on scope, on every digest cycle the watcher looks up the value of the property and updates the DOM if there is a change.
The totalProductCnt from your welcomeController isn't updated because it is assigned only once when the controller is created.
You can use several solutions to refresh the displayed value. Use a getter for your totalProducts in the factory :
myApp.factory("productCountFactory", function() {
var totalProducts = 0;
return {
getTotalProducts: function() {
return totalProducts;
},
addProduct: function() {
totalProducts++;
},
removeProduct: function() {
totalProducts--;
}
};
});
myApp.controller("welcomeContoller", function($scope, productCountFactory) {
$scope.getTotalProducts = productCountFactory.getTotalProducts;
});
myApp.controller("productController", function($scope, productCountFactory) {
$scope.addProduct = function() {
productCountFactory.addProduct();
};
$scope.removeProduct = function() {
if (productCountFactory.getTotalProducts() >= 1)
productCountFactory.removeProduct();
};
});
And update the view accordingly:
<div ng-controller="welcomeContoller">
{{getTotalProducts()}}
</div>
Plunkr Link
I have a button which falls into Controller B and two block of HTML code which kind of falls under controller A...............and button falls into one block of HTML code
Example:
<div ng-controller="A">
<div ng-show="now">
<div>
<Button ng-controller="B"></Button>
</div>
</div>
<div ng-show="later">
</div>
</div>
On one button click I show up now block and later on button click of B controller I kind of hide now block and display later block.
How do I achieve this functionality?? I am not able to pass ng-show varibales between two different controller files......what should I use???
Hope this helps...!
angular.module('app', [])
.controller('A', function($scope) {
console.log('A');
$scope.state = {
now: true
};
$scope.showLater = function() {
$scope.state.later = true;
};
})
.controller('B', function($scope) {
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-controller="A" ng-app="app">
<div ng-show="state.now">
<div>
<button ng-controller="B" ng-click="showLater()">Show Later</button>
</div>
</div>
<div ng-show="state.later">LATER
</div>
<p> <pre ng-bind="state | json"></pre>
</p>
</div>
You could use a simple service that stores the state.
Example:
angular.module('mymodule').service('ActiveService', function() {
var service = {};
var status = false;
service.getStatus = function() {
return status;
}
service.toggle = function() {
status = !status;
}
return service;
})
And in your controller:
angular.module('mymodule').controller('SomeController', function(ActiveService) {
$scope.status = ActiveService.getStatus;
})
The Angularjs service is a singelton, so it will hold your values for you across different controllers, directives or pages.
Could also be used directly:
// Controller
$scope.service = ActiveService;
// Html
<div ng-show="service.getStatus()">
...
</div>
You can also achieve this by declaring the variable in $rootScope and watching it in controller A,
app.controller('A', function($scope, $rootScope) {
$rootScope.now = true;
$rootScope.later = false;
$rootScope.$watch("now", function() {
$scope.now = $rootScope.now;
$scope.later = !$rootScope.now;
})
});
In Controller B, you just change the value of now based on previous value like this on ng-click,
app.controller('B', function($scope, $rootScope) {
$scope.testBtn = function() {
$rootScope.now = !$rootScope.now;
}
});
I have implemented a button within different divs(now and later) in a plunker,
http://embed.plnkr.co/xtegii1vCqTxHO7sUNBU/preview
Hope this helps!