I'm using Angular's UI-Router as shown below to do URL-routing in my web-app as shown below:
$stateProvider.state('myState1', {
url: '/state1',
templateUrl: 'state1.html',
controller: 'MyState1Ctrl'
});
$stateProvider.state('myState2', {
url: '/state2',
templateUrl: 'state2.html',
controller: 'MyState2Ctrl'
});
Within each of the two template files state1.html, state2.html, I have my navigation bar directive: <myapp-navigation-bar></myapp-navigation-bar>
But I want the navigation bar to behave differently based on weather it is in myState1 or myState2. How can I detect from within the controller of the navigation bar (or its template) which state it is in?
According to the documentation, You can do this,
.controller('MyState1Ctrl', function($scope, $state) {
$scope.statecurrent = $state.current;
});
You can also check like this -
.controller('MyState1Ctrl', function($scope, $state) {
if ($state.is("myState1")) {
//Add Logic
}
});
Related
I have see people post things online about using Angular ui-router and i see these types are code that do not explicitly even show an controller name, so how is it even suppose to know how to call the controller?
state('new-rp', {
url: '/new/:portfolioId',
templateUrl: 'new.html',
controller: function($scope, $stateParams) {
$scope.portfolioId = $stateParams.portfolioId;
}
})
Code of mine that I TRIED that does NOT list the controller like above
.state("deviceDetail", {
url: "/devices/:DeviceId", // param is required which specific device id
templateUrl: "app/devices/deviceDetailView.html", // ui elements
controller: function($scope,$stateParams) {
$scope.DeviceId = $stateParams.DeviceId;
}
});
Problem is the controller is NOT hit
But this code explicitly uses the controller name and the controller gets hit, thus i'm having trouble with how this type of code would hit a controller
controller: function($scope,$stateParams) {
$scope.DeviceId = $stateParams.DeviceId;
}
HOW does it know? (doesn't work for me )
You can declare controllers in two ways in UI router states:
//1
.state('new-rp', {
url: '/new/:portfolioId',
templateUrl: 'new.html',
controller: function($scope, $stateParams) {
$scope.portfolioId = $stateParams.portfolioId;
}
})
//2
.state('new-rp', {
url: '/new/:portfolioId',
templateUrl: 'new.html',
controller: PortfolioController
})
.
.
.
//PortfolioController definition
In method #1, your controller is created for you inline, while in #2, UI Router is looking for an explicitly declared controller called PortfolioController
I am learning angularJS and creating a web application which uses ui-router.
I have defined states as follows:
angular.module('test', [])
.config(function($stateProvider){
$stateProvider.
state('root',{
url: '/',
abstract:true,
templateUrl: '/root.html',
controller: 'MyController'
})
.state('root.route1',{
url: '/route1',
parent: 'root',
views:{
'':{
templateUrl: '/route1.html'
}
'estimatedCost#':{
templateUrl: '/esitmatedCost.html'
}
}
})
.state('root.route2',{
url: '/route2',
parent: 'root',
views:{
'':{
templateUrl: '/route2.html'
}
'estimatedCost#':{
templateUrl: '/esitmatedCost.html'
}
}
})
});
While navigating back and forth between route1 and route2, I want to share scope variables from MyController. When I navigate to route2 from route1, it is loosing value of scope variable.
I am not sure what I am doing wrong.
Can anyone help me?
Thanks in advance.
I have yet to work with the ui-router, but I have worked with AngularJS for the last couple of years and this is how the language generally has worked in the past.
A controller's main purpose is to control the data on a single template. These controllers can communicate to each other through an AngularJS factory, often known as a service. In your case, you probably want to use a service as the controllers are getting destroyed on successful route change.
angular.module('test', [])
.factory('myFactory', function() {
var info = "Hello World";
return {
info: info
};
})
.controller('CtrlOne', function($scope, myFactory) {
$scope.info = myFactory.info;
})
.controller('CtrlTwo', function($scope, myFactory) {
$scope.info = myFacotry.info;
});
You can then use the two controllers on the two different views and they share the variables from the service that connects them.
Use $stateParams to pass parameters between two states.
Fallow the below steps :
Define your state with params object.
.state('route.route1', {
url: 'your url name',
params: {
nameOfParamObj: null
},
controller: 'your controller',
templateUrl: 'your template url',
})
From the controller where you want to send scope data use as fallows
$state.go(toState, params, options);
In toState controller catch state params using $stateParams
$stateParams.yourParamObjectName
Make sure $stateParams, $state services as dependency in your regarding controller
Have a look into the official ui-router documentation Here.
Here is an example to check http://embed.plnkr.co/uVMlkk/preview
When we navigate to 'page2' route there is a 'hey, I'm a subroute' note.
But once we navigate anywhere else that note will disappear forever.
The goal is to make some nested states to be shown right away (as a default ones).
I assume there should be some cases using $state.go(), but can't figure it out so far. Any help is highly appreciated.
State definition snippet:
.state('root.page2.tab', {
url: '/:tabId',
templateUrl: 'tpl.page2.tab.html',
controller: 'Page2TabController'
})
.state('root.page2.tab.subroute', {
url: '',
templateUrl: 'tpl.page2.tab.subroute.html'
})
the content of the 'tpl.page2.tab.subroute.html':
hey, I'm a subroute
related controller:
.controller('Page2TabController', ['$scope', '$state', function($scope, $state) {
$scope.tabId = $state.params.tabId;
$state.go('root.page2.tab.subroute');
}])
There is a fixed version.
I removed the url from the 'root.page2.tab.subroute'
.state('root.page2.tab.subroute', {
//url: '',
templateUrl: 'tpl.page2.tab.subroute.html'
})
And because the parent has defined paramater tabId:
.state('root.page2.tab', {
url: '/:tabId',
templateUrl: 'tpl.page2.tab.html',
controller: 'Page2TabController'
})
We have to pass that param inside of the redicrection:
.controller('Page2TabController', ['$scope', '$state', function($scope, $state) {
$scope.tabId = $state.params.tabId;
// instead of this
// $state.go('root.page2.tab.subroute');
// we need this
$state.go('root.page2.tab.subroute', $state.params);
}])
Check the working, fixed version here
ANOTHER approach - using redirectTo - there is a working plunker
One way, inspired by this:
Redirect a state to default substate with UI-Router in AngularJS
could be to add a very smart but small redirect code snippet:
.run(['$rootScope', '$state', function($rootScope, $state) {
$rootScope.$on('$stateChangeStart', function(evt, to, params) {
if (to.redirectTo) {
evt.preventDefault();
$state.go(to.redirectTo, params)
}
});
}])
And adjust our state like this:
.state('root.page2.tab', {
url: '/:tabId',
templateUrl: 'tpl.page2.tab.html',
controller: 'Page2TabController',
redirectTo: 'root.page2.tab.subroute',
})
Check it here
There is a trick how to handle scenarios:
Parent should trigger some action in case that
it is accessed, or
its reached again, when navigating back from child in a parent state
In that case, we can use the "target (ui-view) for a child" as a place where sits the special view, with special controller. This will be
injected into that position once parent is created and
re-injected into that position again, once child is left. In that case, it will be re-init.
Enough explanation. There is a working plunker. There is adjusted state:
.state('root.page2', {
url: '/page2',
views: {
'content#root': {
templateUrl: './tpl.page2.html',
controller: 'Page2Controller'
},
'#root.page2': {
template: '<div></div>',
controller: 'RedirectorController'
}
}
})
So, now we can do some magic inside of our 'RedirectorController'
.controller('RedirectorController', ['$scope', '$state',
function($scope, $state) {
$state.go('root.page2.tab', { tabId: $scope.activeTabId });
}])
Check it in action here
Read more about what that new view/controller get from the other (Scope Inheritance by View Hierarchy Only) one here
Nested states or views for layout with leftbar in ui-router?
How do I share $scope data between states in angularjs ui-router?
I am using templateUrl to display specific php pages in my webpage. Now I wish to scrap the individual php pages and display code with variables passed to it. What is the easiest way to get back to this?
var AppModule = angular.module('App', ['ngAnimate', 'ngRoute']);
AppModule.config(function($routeProvider) {
$routeProvider
.when('/page:pageNumber', {
templateUrl: function ($routeParams) {
return '/app/..../assets/html/page' + $routeParams.pageNumber + '.php';
},
controller: "PageCtrl"
})
.otherwise({
redirectTo: "/page1"
});
});
AppModule.controller("ViewCtrl", function($scope, $timeout) {
$scope.$on("$routeChangeSuccess", function(event, current, previous) {
...stuff...
});
});
Use scripts via text/ng-template, which allows you to write your templates inline while declaring a url to access them by. The following code can go directly in your index.html, and if your config is set to show '/my-template.html', the inline template will be output right in the ng-view above it.
<ng-view />
<script type="text/ng-template" id="/my-template.html">
template goes here
</script>
Then in your config:
.when('/', {
templateUrl: '/my-template.html'
});
Here's a little more info from the Angular docs:
https://docs.angularjs.org/api/ng/directive/script
And lastly, this technique is demonstrated in one of the TodoMVC examples for Angular:
View: https://github.com/tastejs/todomvc/blob/gh-pages/examples/angularjs/index.html
Config: https://github.com/tastejs/todomvc/blob/gh-pages/examples/angularjs/js/app.js
I have the following setup in my code
.config(function config($stateProvider)
$stateProvider
.state('home', {
url : '/home',
views : {
'main' : {
controller : 'HomeCtrl',
templateUrl : 'home/home.tpl.html'
}
}
})
.state('home.details', {
url : '/details',
views : {
" " : {
template : "<h1>hello</h1>",
controller : function ($scope, $http, $state) {
//do some stuff here
//does not seem to reach code in here
}
}
}
});
})
.controller('HomeCtrl', function ($scope, $http, $state) {
//on a button click do $state.go('.details');
});
When I do this , the button click on my HomeCtrl seems to take me to /home/details but it does not seems to go inside the controller in that particular route at that point. (I checked by putting a break point inside the controller for the details.) Is there something wrong with my setup? I'm trying to do something similar to this sample app shown in the ui-router webpage.
The solution here would in a named-view (not) matching. Here is the working plunker.
We have to place the named ui-view inside of the parent view (or use more precise naming, see for example here)
So, the parent, home template should contain the named ui-view, e.g. nameOtherThanSpace
<div ui-view="nameOtherThanSpace" ></div>
And the child defintion must target that view, the complete snippet is:
$stateProvider
.state('home', {
url: '/home',
views: {
'main': {
controller: 'HomeCtrl',
template: '<div>' +
'<h1>hello from parent</h1>' +
'<hr />' +
'<div ui-view="nameOtherThanSpace" ></div>' +
'<div>',
}
}
})
.state('home.details', {
url: '/details',
views: {
"nameOtherThanSpace": {
template: "<h2>hello from a child</h3>",
controller: function($scope, $http, $state) {},
}
}
});
How to use more specific view names:
View Names - Relative vs. Absolute Names
UI-Router isnt rendering childs correctly with templateurl in Asp.net Mvc
The working plunker using the name nameOtherThanSpace, instead of " " (space)
Try registering your controller on the app instead of on your $stateProvider. e.g.
var app = angular.module('myApp', []);
app.controller('HomeCtrl', function ($scope, $http, $state) {
//on a button click do $state.go('.details');
});
Update 1:
You should only need to specify a view if you have multiple views in which case the view probably needs to have a name. But you only have one view for that state so I would just do this.
.state('home.details', {
url : '/details'
template : "<h1>hello</h1>",
controller : function ($scope, $http, $state) {
//do some stuff here
//does not seem to reach code in here
}
}