I am working on project where my role is server-side programmer.Client side developer used Angular js while designing pages.
Problem I am facing is we have one page where I need to pass one parameter along with url to server
<a id="startQuiz" href="#/Quiz" >Start Quiz</a>
jquery code is
$('#startQuiz').click(function (e) {
e.preventDefault();
window.location.href = '#/Quiz/' + selectedTopic;
}
Controller code is
#RequestMapping(value="/Quiz", method = RequestMethod.GET)
public String Quiz(HttpServletRequest request,Model model,HttpServletResponse response,#RequestParam(value = "topic", required = false) String topic) throws Exception {
System.out.println("select topic : "+topic);
}
I am getting topic as null cause Nothing after the hash # sign is getting sent to the server, hence the null values
Rounting file Is
app.config(function($routeProvider){
$routeProvider
.when("/Quiz", {templateUrl: "Quiz", controller: "PageCtrl"})
});
So, What change should I make in routing so I can get value of topic in Controller
Any way to do that?
The URL of the page is not what matters here. That URL will only load the main page template.
What matters is the URL used to send the AJAX request to your backend controller.
The route should be defined as
$routeProvider
.when("/Quiz/:topicId", {
templateUrl: "Quiz",
controller: "PageCtrl"
})
Then, using the $routeParams service in the PageCtrl, you can get the value of topicId, and send the appropriate AJAX request to the backend.
Related
I am new to nodejs+angular app. I just want to pass some data from node server to pages generated by angular. How can I do that? is there something like,
response.render('URL',JSONDATA);
using which I am able to get data to a specified URL. Just for information I am using ng-view/ ng-route on my UI pages for fast loading.
On Client side:
app.config([ '$locationProvider','$routeProvider', function($locationProvider,$routeProvider) {
//$locationProvider.html5Mode(true);
$routeProvider.when('/', {
templateUrl : 'src/pages/login.html'
}).when('/new-enquiry', {
templateUrl : 'src/pages/enq-form.html'
}).when('/dashboard', {
templateUrl : 'src/pages/dashboard.html'
}).when('/edit-enquiry', {
templateUrl : 'src/pages/edit.html'
}).when('/all-enquiry', {
templateUrl : 'src/pages/all-enquiry.html'
});
} ]);
What I have to do is for example in login page, after submitting I need to redirect to a new page and send username to that page. I dont want to use ejs and jade.
Have a look at the docs at
https://docs.angularjs.org/api/ngRoute/provider/$routeProvider
https://docs.angularjs.org/api/ng/service/$http
For example, you can configure a controller for every route, which then uses the $http service to request data from your Node.js backend. The data is rendered in the template you provide per route (such as src/pages/login.html).
I want to try dynamic route request but It's not working properly. And here I explain my coding style step by step.
<nav class="main-nav" ng-show="global.user.user_type!='admin'" ng-repeat="mMenu in Mainmenu">
{{mMenu.MenuName}}
</nav>
This code contain URL link and It's load every time with a variable that is web address link. And the link is something like that - http://localhost/views/adminpanel/about.html
In AngularJS Controller contain the code -
$scope.geturl = function(url)
{
var params = {
url1 : '/views/adminpanel/'+url
}
$http({'method' : 'post', url : 'views/adminpanel/'+url, data: params
}).success(function(data)
{
}).
error(function(data){
})
}
configuring and using ngRoute -
when('/views/adminpanel/:url', {
controller: 'homeCntrl',
templateUrl: 'views/adminpanel/:url'
})
In server side (Express) :
Routing HTTP requests, Configuring middleware and Rendering HTML views
app.post('/views/adminpanel/:url',auth.requiresLogin, users.geturl);
exports.geturl= function(req,res)
{
var url = req.body.url1;
res.render(url);
}
This is all about my rendering process but It's not working. In browser It only shows the URL link but not shows any content. How can I solve It any idea?
I think you are confusing things:
first of all you have a link together with a ngClick: you should have either of those
your ngClick has an empty success function, so it does nothing with the template
you have a route set with express that matches with the ngRoute (btw, POST is usually used to create resources, you should GET the template)
your templateUrl is going to send a GET request to (literally) /views/adminpanel/:url, it does not replace :url
To fix it:
set a different endpoint for your APIs
use a GET endpoint instead of a POST
change the ngRoute to:
when('/views/adminpanel/:url', {
controller: 'homeCntrl',
templateUrl: function(param) {
return '/api/<path>/' + param.url;
}
})
remove the ngClick from the <a>
I have angularjs project implemented multi-language and using ui-router for routing. Every language will be have different url. Ex:
http://example.com/!#/en-us/english-title
http://example.com/!#/es-es/spanish-title
All state with url registered automatically when app run and load them from database. Ex:
angular.module('bxApp').run(["$http", function ($http) {
$http.get('/Home/Routes').success(function (result) {
result = result || {};
if (angular.isDefined(result) && result !== null) {
_.each(result.Routes, function (route) {
stateProvider.state(route.Name, {
url: route.Url,
templateUrl: route.TemplateUrl,
controller: route.Controller,
});
});
}
});
}]);
It work well but it will not work when user copy this link and paste to browser or click this link from other website . I think because of state can't found so it will be redirect to default and it does not keep url that user enter or copy.
In this case , How to do that?
Thanks,
You're declaring your states as a result of an HTTP call to your server: the problem is that these states are defined too late for the user to navigate to them when he pastes the URL in a new tab.
To understand, let's deconstruct what happens :
The user is on the initial page / other website, and copies the URL.
He pastes it in a new tab
Your angular application loads, finishes its config phase without having declared any of those states, and sends an HTTP call.
ui-router fails to route to a state matching the pasted URL, since the corresponding state is not here yet, and redirects to default
The HTTP response comes back, and your states are created (but too late).
How to make it work ?
My first reaction would simply not to store your states on your server. Unless you want the very core of your UX to be language-dependent, you don't have to do that.
But hey, let's say we want to do it anyway. I suggest you try this : declare a toplevel 'language' state, and have it load the other states in a resolve clause. This will 'block' the routing until the other states are declared :
angular.module('bxApp')
.config(['$urlRouterProvider', function ($urlRouterProvider) {
$urlRouterProvider
.state('language',{
url: '/:language',
resolve: {
childrenLoaded: ['$http', function ($http) {
// returning a promise is essential to have the 'waiting' behavior
return $http.get('/Home/Routes').then(function (data) {
var result = data.result || {};
if (angular.isDefined(result) && result !== null) {
_.each(result.Routes, function (route) {
$stateProvider.state(route.Name, {
url: route.Url,
templateUrl: route.TemplateUrl,
controller: route.Controller
});
});
}
});
}]
}
})
}]);
Again, this approach is probably asking for trouble : I strongly recommend you hardcode your states instead of storing them in a database. If all that varies from one language to another is the text and URL, then you will be fine with an URL param.
This might seem like a silly question.. but how do I pass req.user.username (for example) to all pages / globally after the user signs in with passport. This question can apply to any data I would like accessible for all pages...
On the server side, I have the below which sends allows routeProvider to handle all client side routing.
app.get('*',
function(req, res) {
res.sendfile('./public/index.html')
// load the single view file (angular will handle the page changes on the front-end)
})
I'm not sure if the solution is specific to passport... express or involves both...
The client side routing is handled by something like:
.config(function($routeProvider, $locationProvider) {
$routeProvider
.when('/', {templateUrl: 'views/home.html'})
.when('/login', {templateUrl: 'views/login.html'})
.when('/users', {templateUrl: 'views/users.html', controller: 'UserController'})
...
You have two options. Either
BAD - include that data in your compiled view that is initially served (./public/index.html) or
GOOD/COMMON - fetch the data you need inside something like an Angular controller which is in your view; eg.
$routeProvider.when('/', {
templateUrl: 'views/home.html',
controller: function($scope, myThings) {
//myThings is a service that async fetches some data from api
myThings().then(function(user) {
$scope.user = user;
});
}
});
This obviously means you are exposing data on an api endpoint, but how else would angular be fetching the bits it needs since you said this is a single-page app?
Services are the way to go if you want to share global data among controllers, directives and other services.
Depending upon the type of data, you can expose services that load data from the server or services which do not need to make remote call to load data (like some custom view settings).
For example if in case you want to get the current logged in user.
The first thing is to create a method on the server that return the current logged in user data in json format.
Then create something like a UserService or SessionService that call this server method to load currently loggedin user data.
Something like
angular.module('myApp').factory('SessionService',['$http',function($http) {
var service={};
service.getCurrentUser=function() {
return $http('/user');
};
return service;
}]);
Inject this service into your controllers to get the current user. You can optimize it to cache the user data.
If you want to use the data in routeProvider use the resolve property
.when('/users', {templateUrl: 'views/users.html', controller: 'UserController',
resolve: {
currentUser:function(SessionService) {
return SessionService.getCurrentUser();
}
}}})
I am trying to pass an index value, for an array, into a route, so I can use the id to load a specific object into a detail view.
Controller that injects the index and changes path
location.path('/detail/'+index);
$routeProvider that handles the detail routing
.when('/detail/:index', {
controller: DetailViewCtrl, templateUrl: 'partials/detail'
});
Express script that handles the partial loading
app.get('/partials/:partial', function(req, res) {
return res.render('partials/' + req.params['partial']);
};
If I pass in an index of 5 then I expect the URL to look like "localhost:3000/detail/5", and I do get that in my browser but the server returns a 404 error where is was trying to look for some weird URL "localhost:3000/detail/partials/detail." I have no clue where the "detail " that is added before the partial is coming from.
It would be nice to know what is happening behind the scenes and how to fix the problem. How can I pass custom variables in the route and not have express freak out?
Prepend the templateUrl with /:
.when('/detail/:index', {
controller: DetailViewCtrl,
templateUrl: '/partials/detail'
});
or insert the base tag under the HTML head element as in:
<base href="/" />