I want to load config file in Angular application, only the first time when application is opened. Then config variables become globally available across the application. Here is what I come up so far in my app.js:
angular
.module('myApp', [
...
])
.run(
[ '$rootScope', '$http',
function ($rootScope, $http) {
$http.get('config/config.json').success(function(data) {
$rootScope.config = data;
});
}
]
)
Here I load the config.js and when I try to use it in my controller like so:
angular.module('myApp')
.controller('MainCtrl', function ($rootScope) {
console.log($rootScope, $rootScope.config);
})
For $rootScope I can see all properties including config, but $rootScope.config returns undefined.
How to load config file on first page load and then make it accessible throughout the app?
Thanks!
As described in Mark Colemans blog post about this, you can get your config and then load the application. Pasting Mark's code for convenience:
var urlToCheck = '/echo/json/';
var myApp = angular.module('myApp', []);
myApp.controller("MyCtrl", ["$scope", "config", function ($scope, config) {
$scope.url = config.url;
}]);
$.ajax({
url: urlToCheck
}).fail(function () {
myApp.constant('config', {
url: '/fail-url'
});
}).done(function () {
myApp.constant('config', {
url: '/done-url'
});
}).always(function () {
angular.bootstrap(document, ['myApp']);
});
You can initialize it to a promise and then access it in the controller when the promise is resolve. reject the promise too.
http://plnkr.co/edit/EIBJhZg80lpeyhkMD3FD
$q.when($rootScope.config).then(function (config) {
console.log($rootScope.config, config);
});
Related
I have an app that I have inherited that I have to support. So far it had only run on one server and we want to run it on different servers. We found hard coded references to the server name all over the place in python server code and C++ client code. It was easy enough to change those to read the server name from a config file. But now I find is a js module this code:
angular.module('app.config', []).constant('config', {"api":"http://foo.bar.com:8001/"});
How can I change this so that the value for the server is read dynamically from a config file or some other means that would not require it to be hard coded?
Here is an update with what I have tried:
Originally, my code had this:
angular.module('app.config', []).constant(
'config', {"api":"http://foo.bar.com:8001/"}
);
and I changed it to this:
angular.module('app.config').controller('myCtrl',
function($scope, $http) {
$http.get('./config.json')
.then(function(response) {
$scope.api = response.data;
});
});
and I got this:
error Module 'app.config' is not available!
Then I changed it to:
angular.module('app.config', [] ).controller('myCtrl',
function($scope, $http) {
$http.get('./config.json')
.then(function(response) {
$scope.api = response.data;
});
});
And then I get:
Error: [$injector:unpr] Unknown provider: configProvider <- config <- workitem
I feel I am very close, I just need a bit more help.
Another update:
I tried this:
angular.module('app').controller('home', ['$scope', homeCtrl]);
angular.module('app').controller('workitem', ['$scope', '$routeParams', '$sce', '$timeout', '$http', 'config', workitemCtrl]);
},{"./home/home.js":3,"./workitem/workitem.js":4,"angular":10,"angular-route":6,"angular-sanitize":8,"bootstrap-treeview/src/js/bootstrap-treeview.js":11}],2:[function(require,module,exports){
module.exports = function($scope,$http) {
$http.get('config.json').success(function(reponse) {
console.log("reponse --> "+reponse.api);
$scope.api = reponse.api;
});
}
But then of course app.config was not getting defined. How could I do this an still define app.config?
I just tried this:
var my_config = {};
$.getJSON("config.json", function(data) {
$.each(data, function(key, val) {
my_config[key] = val;
});
});
but I get my_config is not defined when I use it down in the controller. How can I make that variable available in the controller?
Try This
angular.module('app.config', [])
.constant('bbConfig',{
"api":"http://foo.bar.com:8001/"
});
In controller
angular.module('app.config', [])
.controller('MainCtrl',['$scope', 'bbConfig' , function ($scope, bbConfig){
console.log(bbConfig.api)
}]);
Create a service to read the config (json file) or make a call to server and store the response URL in LocalStorage like the following. You can access it from every where
$localStorage.api = response.Url ; // http://foo.bar.com:8001/
I was finally able to get this working by doing this up front:
angular.module('app').value('config', {
api: ''
});
angular.module('app').run(function($rootScope, $http, config) {
$http.get('config/config.json').then(function(response) {
config.api = response.data.api;
$rootScope.$broadcast('config-loaded');
});
});
Wrapping the main code in:
var init = function(){
}
And adding this at the end:
if (config.api) {
init()
} else {
var configLoaded = scope.$on('config-loaded', function() {
init();
configLoaded();
});
}
You can do:
Use ngConstant build task to wrap your standalone config file in JSON format into the includable angular.config data.
Suppose you have app/config.json file:
{
"myFirstCnt": true,
"mySecondCnt": { "hello": "world" }
}
Then after running the ngConstant task in you build you'll get dist/config.js (output) will be :
define(["require", "exports"], function(require, exports) {
return angular.module("my.module.config", ["ngAnimate"])
.constant("myFirstCnt", true)
.constant("mySecondCnt", { "hello": "world" })
.constant("myPropCnt", "hola!");
});
Gulp plugin, Grunt plugin, more on ngConstant
Use service to load the JSON file immediately after you app bootstraps in service or in the controller:
should avoid this:
app.controller('myCtrl',
function($scope, $http) {
$http.get('PATH_TO/config.json').then(function(response) {
$scope.myWelcome = response.data;
});
}
);
More on that way example here: Reading in JSON through Angular Resources Service
UPD 12-06
For parsing loaded JSON try this:
for (var name in data) {
if (data.hasOwnProperty(var)) {
my_config[var] = data[var];
}
}
i'm working with angular-seed project.
I'm trying to retreive data from mysql database.
I need to know how to define different controller for each view.
For example, I have this structure:
js
|_modules
|_companies
|_controller.js
|_data.js
|_app.js
|_base.js
I have added this route to app.js
.state('app.companies', {
url: '/companies',
title: 'Companies',
templateUrl: helper.basepath('companies.html'),
controller: 'companiesCtrl' //THIS THROWS THE ERROR BELOW
})
companies.html has scripts added to botom of the page
<script src="app/js/modules/companies/data.js"></script>
<script src="app/js/modules/companies/controller.js"></script>
and this is the code for controller.js (also tested the commented part)
(function() {
'use strict';
angular
.module('appname')
.controller('companiesCtrl', companiesCtrl);
companiesCtrl.$inject = ['$scope','companiesData','$log'];
function companiesCtrl($scope, companiesData, $log) {
console.log('asd'); //NEVER REACH THIS LOG
};
});
/*var app = angular
.module('appname')
.controller('companiesCtrl', ['$scope','companiesData','$log', function($scope, companiesData, $log){
console.log('asd'); //NEVER REACH THIS LOG
$scope.companies = {};
Data.get('companies').then(function(data){
$scope.companies = data.data;
console.log('($scope.companies)');
});
}]);
*/
But I keep getting
Error: [ng:areq] Argument 'companiesCtrl' is not a function, got undefined
Same if I script ng-controller="companiesCtrl" on my view.
change your function to:
(function() {
'use strict';
angular
.module('appname')
.controller('companiesCtrl', companiesCtrl);
companiesCtrl.$inject = ['$scope','companiesData','$log'];
function companiesCtrl($scope, companiesData, $log) {
console.log('asd'); //NEVER REACH THIS LOG
};
})();// execute this function then it will work
See this example if you remove () breaket then it will give you the error.
If possible then create controller like this:
angular.module('appname')
.controller('companiesCtrl', ['$scope', function($scope) {
console.log('asd'); //NEVER REACH THIS LOG
}]);
Please change your controller as :
(function() {
'use strict';
function companiesCtrl($scope, companiesData, $log) {
console.log('asd'); //NEVER REACH THIS LOG
};
angular
.module('appname')
.controller('companiesCtrl', companiesCtrl);
companiesCtrl.$inject = ['$scope','companiesData','$log'];
})();
The problem was on script loading.
I had to use lazy loading of the files within my app.js
Here's the code:
app.js companies route
.state('app.companies', {
url: '/companies',
title: 'Companies',
templateUrl: helper.basepath('companies.html'),
resolve: helper.resolveFor('companiesCtrl'),
controller: 'companiesCtrl'
})
lazy load code
.constant('APP_REQUIRES', {
scripts: {
'modernizr': ['vendor/modernizr/modernizr.custom.js'],
'icons': ['vendor/fontawesome/css/font-awesome.min.css',
'vendor/simple-line-icons/css/simple-line-icons.css'],
'companiesCtrl': ['app/js/modules/companies/data.js','app/js/modules/companies/controller.js']
},
modules: []
});
I am able to lazy load angularjs with the help of requirejs. But, how can I load modules that needs to be associated to the controller?
My example configuration in app.js looks like the following, loading all the providers and keeping a reference.
var app = angular.module('myApp', ['ui.router'])
var cacheProviders = {};
app.getProvider = function () {
return cacheProviders.$provide;
}
app.getCompileProvider = function () {
return cacheProviders.$compileProvider;
}
app.getControllerProvider = function () {
return cacheProviders.$controllerProvider;
}
app.getFilterProvider = function () {
return cacheProviders.$filterProvider;
}
app.config(['$stateProvider', '$urlRouterProvider', '$controllerProvider', '$compileProvider', '$filterProvider', '$provide',
function ($stateProvider, $urlRouterProvider, $controllerProvider, $compileProvider, $filterProvider, $provide) {
(function () {
cacheProviders.$controllerProvider = $controllerProvider;
cacheProviders.$compileProvider = $compileProvider;
cacheProviders.$filterProvider = $filterProvider;
cacheProviders.$provide = $provide;
})();
var lazyCtrlLoad = function (controllerName) {
return ["$q", function ($q) {
var deferred = $q.defer();
require([controllerName], function () {
deferred.resolve();
});
return deferred.promise;
}];
}
$stateProvider.state('main.view2b', {
url: '/view2b',
templateUrl: 'forms/empl/searchEmplForm.html',
controllerAs: 'srchC',
controller: 'searchEmplCtrl',
resolve: {
loadOtherCtrl: lazyCtrlLoad('searchEmplCtrl')
}
})
In my other module, I am trying to register controllers, load services..
define([
'angular', 'angularResource'
], function (angular) {
angular.module('myApp')
.getControllerProvider()
.register(ctrl, ...)
But, while loading service below, I need access to $resource which is part of ngResource module in angularResource.
angular.module('myApp')
.getProvider().service('deptService', ['$resource', function ($resource) {
return $resource('/dept/:dept', {dept: '#_dept'});
}])
How can I load ngResource while initalizing the javascript controllers/services lazily?
Take a look to AngularAMD here. It allows you to load controllers in the ui-router without using lazyload. This AngularAMD is used to integrate requireJs and Angular.
$stateProvider
.state('home', {
url: '',
views: {
'#': angularAmd.route({
templateUrl: 'ngApplication/application/shared/layouts/basic/basicTplView.html',
controllerUrl: 'ngApplication/application/shared/layouts/basic/basicTplCtrl.js',
controller: 'basicTplCtrl'
}),
'header#home': angularAmd.route({
templateUrl: 'ngApplication/application/shared/layouts/header/headerView.html',
controllerUrl: 'ngApplication/application/shared/layouts/header/headerCtrl.js',
controller: 'headerCtrl'
})
},
});
Also, you are using requirejs, you can load all the dependencies for an specific controller using the define syntax of requireJs. Let's say you want to create a loginCtroller in a separately file, and this controller depends on another angular service:
define(['app', 'transformRequestAsFormPostService'], function (app) {
app.controller('loginCtrl', ['$scope', '$rootScope', '$sce', '$http', '$state', 'transformRequestAsFormPostService', function ($scope, $rootScope, $sce, $http, $state, transformRequestAsFormPost) {
$scope.login = function () {
/*do something here using the service*/
};
}]);
});
Here, the dependency called transformRequestAsFormPostService is another file, I defined it in the main.js (requireJs confifguration file) and it's defined using the same approach than the loginCtrol. Now I am using it in my project and its working so far so good.
Regards,
Ernesto
I am trying to lazy load my controllers for my AngularJS app I built along side with requireJS. I have created a custom "lazyLoad" library that creates a resolve object in app.config() routes (also I am using ui-router). If I code the state (without my library) to look like so it works
define(['angular', 'lazyLoader', 'uiRouter'], function(angular, lazyLoader, uiRouter){
var app = angular.module('myApp', ['ui.router']);
app.config(function ($stateProvider, $urlRouterProvider, $controllerProvider, $compileProvider, $filterProvider, $provide) {
window.lazy = {
controller: $controllerProvider.register,
directive: $compileProvider.directive,
filter: $filterProvider.register,
factory: $provide.factory,
service: $provide.service
};
$urlRouterProvider.otherwise('/');
$stateProvider
.state('campaigns', {
url:'/campaigns',
views: {
"top-nav" : {
templateUrl: 'views/home/top-nav.html',
resolve : {
load : ['$q', '$rootScope', function($q, $rootScope){
var d = $q.defer();
require(['../app/controllers/header-controller'], function() {
$rootScope.$apply(function(){
d.resolve();
});
});
return d.promise;
}]
}
},
"fullpage": {
templateUrl: 'views/home/index.html',
resolve : {
load : ['$q', '$rootScope', function($q, $rootScope){
var d = $q.defer();
require(['../app/controllers/home-controller'], function() {
$rootScope.$apply(function(){
d.resolve();
});
});
return d.promise;
}]
}
//controller: 'home-controller'
}
}
});
});
return app;
});
If I attempt to replace the resolve object with my library function it looks would look like this:
define(['angular', 'lazyLoader', 'uiRouter'], function(angular, lazyLoader, uiRouter){
and
.state('home', lazyLoader.route({
url:'/',
views: {
"top-nav" : {
templateUrl: 'views/home/top-nav.html',
controllerUrl: '../app/controllers/header-controller'
},
"fullpage": {
templateUrl: 'views/home/index.html',
controllerUrl: '../app/controllers/home-controller'
}
}
}));
lazyLoader.js
define(function () {
'use strict';
function LazyLoader() {}
LazyLoader.prototype.route = function(config){
var controllerPath;
if(config && config.views){
var singleView = Object.keys(config.views);
for(var i in singleView){
var viewName = singleView[i];
controllerPath = config.views[viewName].controllerUrl;
delete config.views.controllerUrl;
config.views[viewName].resolve = {
load : ['$q', '$rootScope', function($q, $rootScope){
var d = $q.defer();
require([controllerPath], function() {
$rootScope.$apply(function(){
d.resolve();
});
});
return d.promise;
}]
};
}
}
return config;
}
return new LazyLoader();
});
Example Controller
define(['app/module'], function (module) {
lazy.controller('header-controller', ['$scope', function ($scope) {
// stuff here
}]);
});
On a side note I plan on implementing something better than attaching lazy variable to window.
When I code the router like the first example it works. When I use my lazyLoader the one of the two views loads it's controller, the second view's controller's file is started to load (console.logs at the beginning show this) but it cannot resolve "module" in the example above.
link to error: AngularJS Error
Again this issue only happens when using my lazyloader which is producing the same resolve object that I have hard coded in for the version that works.
I have searched high and low and there are a lot of resources out there but I could not find anything that addressed this issue.
Any advice is appreciated!
You are taking too much pain to do lazy loading of controllers & services. There is simple approach to lazy load files with ocLazyLoad. This article might help you resolve the same issue.
https://routerabbit.com/blog/convert-angularjs-yeoman-spa-lazyload/
What you should do is
Add a reference of ocLayzLoad & updated JS files’ reference to load on demand from app.js or .html file of their views.
`bower install oclazyload --save-dev`
Now load the module ‘oc.lazyLoad’ in application. Update app.js file
angular
.module('helloWorldApp', [
'ngCookies',
'ngResource',
'ngRoute',
'ngSanitize',
'oc.lazyLoad',
])
Load JS file by adding reference of JS in .html file
<div oc-lazy-load="['scripts/controllers/about.js', 'scripts/services/helloservice.js']">
<div ng-controller="AboutCtrl as about">
Your html goes here
</div>
</div>
If you using Grunt, update Gruntfile to uglyfy, renamed file name & update references in the final .html or .js file.
On the 'myApp' module definition, shouldn't you be returning app variable instead of myApp?
And to avoid exposing lazy to window, you could define it as a property of app variable, this way when you define new functions, you require app first and you can use it:
app.js:
app.lazy = {
controller: $controllerProvider.register,
directive: $compileProvider.register,
filter: $filterProvider.register,
factory: $provide.factory,
service: $provide.service
};
...
return app;
controller.js:
define(['app'], function (app) {
app.lazy.controller('header-controller', ['$scope', function ($scope) {
// stuff here
}]);
});
Up until recently, I have been throwing all my function into one large JS file. I am now trying to break these into small modules to make my application more portable per say.
I have my core js file (main.js) with the following code:
var App = angular.module("app", ['ui.bootstrap', 'angularMoment', 'chieffancypants.loadingBar', 'ngAnimate', 'ui.sortable', 'ngSanitize'], function ($interpolateProvider, $httpProvider) {
$interpolateProvider.startSymbol('[[');
$interpolateProvider.endSymbol(']]');
$httpProvider.defaults.transformRequest = function (data) {
if (data === undefined) {
return data;
}
return $.param(data);
};
$httpProvider.defaults.headers.post['Content-Type'] = ''
+ 'application/x-www-form-urlencoded; charset=UTF-8';
$httpProvider.defaults.headers.post['X-Requested-With'] = ''
+ 'XMLHttpRequest';
});
In another file (i.e. blog.module.js), I have the following:
(function(window, angular, undefined) {
'use strict';
angular.module("app", [])
.controller('Blog', ['$scope', function ($scope) {
alert('test');
}]);
});
While the main.js file loads along with all its dependencies, the second one doesn't get loaded. The controller is basically not found. Can anyone give me pointers as to where I may be going wrong.?
Thanks
The sintax in blog.module.js looks like you are trying to create two modules with same name 'app'.
Change your controller module like this
(function(window, angular, undefined) {
'use strict';
angular.module("app")
.controller('Blog', ['$scope', function ($scope) {
alert('test');
}]);
});
I quote you :
App = angular.module("app", ['ui.bootstrap',
...
angular.module("app", [])
You cant redeclare a module you can either reopen it
App = angular.module("app", ['ui.bootstrap',
...
angular.module("app")
or create another one
App = angular.module("app", ['ui.bootstrap', 'app.controller'
...
angular.module("app.controller")