view--index.html it will print array of data in ng-repeat
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>hii</title>
<script src="bower_components/angular/angular.js"></script>
</head>
<body ng-app="myApp" ng-controller="myCtrl">
<h1>wellcom </h1>
<p ng-repeat="d in data1 track by $index">{{d}}</p>
<!--<h3 ng-repeat="d1 in data2"> Type Of data are: {{d1}}</h3>-->
</body>
<script src="controller.js">
</script>
<script src="service.js">
</script>
</html>
This is my service, where I set some data type to Redis server and I retrieve that data type and return data to controller.
var Promise = require("bluebird");
var redis = Promise.promisifyAll(require("redis"));
var client = redis.createClient();
angular.module('myApp')
.service('redisService', function ($q) {
this.getAll = function () {
var a1 = [];
return $q(function (resolve, reject) {
// client.set("string key", "string val", redis.print);
// client.hset("hash name", "hashkey 1", "some value", redis.print);
// client.hset("hash name", "hashkey 2", "some other value", redis.print);
// client.lpush("mylist", "In", redis.print);
client.scanAsync(0).then(function (data) {
data[1].forEach(function (reply) {
client.typeAsync(reply).then(function (a) {
a1.push(a);
})
})
});
return resolve(a1);
})
}
});
This is my controller in this data is coming and printing to console but data is not setting to view i.e not showing to index.html
angular.module('myApp', [])
.controller('myCtrl', function ($scope, redisService, $q) {
$scope.data1;
redisService.getAll().then(function (data) {
$scope.data1 = data;
console.log('data is', $scope.data1)
})
})
Related
i am using $rootScope to share my values. please check my code
user controller (user.js)
var app = angular.module('myApp', []);
app.controller('user', function($scope,$rootScope) {
$rootScope.test = "TEST";
});
customer controller (customer.js)
app.controller('customer', function($scope,$rootScope) {
$scope.value = $rootScope.test;
alert($scope.value);
});
this code seems to be ok. but result is undefined. i need to keep all data inside the controller also.
my result
how i pass this value correctly
Instead of user $rootScope to share some data between those controllers, you could also use a service. Here is an example :
(function () {
'use strict';
angular.module('app', []);
angular.
module('app')
.service('contextService', [function () {
var context = {
"foo": "bar",
"hello": "boys"
};
var service = {
getContext: function () {
return context;
},
getContextValue: function (key) {
return context[key];
},
setContextValue: function (key, value) {
context[key] = value;
}
}
return service;
}])
.controller('userController', ['$scope', 'contextService', function ($scope, contextService) {
var vm = this;
vm.context = contextService.getContext();
contextService.setContextValue("foo", "baz");
}])
.controller('customerController', ['$scope', 'contextService', function ($scope, contextService) {
var vm = this;
vm.context = contextService.getContext();
vm.updateContext = function (key, value) {
contextService.setContextValue(key, value);
}
}])
})();
<!DOCTYPE html>
<html lang="en" ng-app="app">
<head>
<meta charset="utf-8" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.1/angular.min.js"></script>
<script src="module.js"></script>
</head>
<body>
<div ng-controller="userController as vm">
<strong>userController</strong>
<pre>
foo = {{ vm.context.foo }}
hello = {{ vm.context.hello }}
</pre>
</div>
<hr />
<div ng-controller="customerController as vm">
<strong>customerController</strong>
<pre>
foo = {{ vm.context.foo }}
</pre>
<button ng-click="vm.updateContext('hello', 'guys')">
Update context <strong>hello</strong> value
</button>
</div>
</body>
</html>
It must be able to pass data between route controllers. Like for example have an input field in one route where its contents will be displayed in the next route. I don't want it with $rootScope.
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.name = "John Doe";
});
</script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
Name: <input ng-model="name">
<h1>You entered: {{name}}</h1>
Click to see this data to another page (route)
</div>
</body>
</html>
See This
RipTutorial -
Handling session storage through service using angularjs
app.factory('storageService', ['$rootScope', function($rootScope) {
return {
get: function(key) {
return sessionStorage.getItem(key);
},
save: function(key, data) {
sessionStorage.setItem(key, data);
}
};
}]);
app.controller('myCtrl',['storageService',function(storageService) {
// Save session data to storageService
storageService.save('key', 'value');
// Get saved session data from storageService
var sessionData = storageService.get('key');
});
Hi i wondering that ploblem so i want ask somebody
so please give me solution?
I make html file like that photo
but when i open this html file this file not working…
any data not diplay
what is the ploblem in this html file?enter image description here
<!doctype html>
<html ng-app="myApp">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<div ng-controller="QueryController">
</div>
<script src="node_modules/angular/angular.js"></script>
<script src="node_modules/elasticsearch-browser/elasticsearch.angular.js"></script>
<script>
var myApp = angular.module('myApp', ['elasticsearch']);
// Create the es service from the esFactory
myApp.service('es', function (esFactory) {
return esFactory({ host: 'localhost:9200'});
});
myApp.controller('ServerHealthController', function($scope, es, esFactory) {
es.cluster.health(function (err, resp) {
if (err) {
$scope.data = err.message;
} else {
$scope.data = resp;
}
});
});
// We define an Angular controller that returns query results,
// Inputs: $scope and the 'es' service
myApp.controller('QueryController', function($scope, es, esFactory) {
// search for documents
es.search({
index: 'epowersyst',
type: 'logs',
body: {
query:
{
match_all : {} }
}
}).then(function (response) {
$scope.hits = response;
console.log($scope.hits)
alert("hits값 : " + response);
});
});
</script>
</body>
</html>
i'm new to angularJs and want to learn more about it, i'm trying to display some users from a fake REST Api, when trying to run my code i got empty page and the console doesn't give me any errors , i don't know where is the error or where i can debug.
app.js
var myApp = angular.module("app", []);
contactsData.service.js look like that :
(function () {
var app = angular.module("app");
app.service("contactDataSvc", function ($http) {
var self = this;
self.getContacts = function () {
var promise1 = $http.get("http://localhost:3000/contacts");
var promise2 = promise1.then(function (response) {
return response.data;
});
return promise2;
}
});
})();
contacts.controller.js
(function () {
var myApp = angular.module("app");
myApp.controller("contactsCtrl", contactsCtrl);
function contactsCtrl(contactDataSvc) {
contactDataSvc.getContacts()
.then(function(data){
this.contacts = data;
});
}
})();
finally my view index.html
<html ng-app="app">
<head>
<title></title>
<script src="angular.js"></script>
<script src="app.js"></script>
<script src="contacts.controller.js"></script>
<script src="contactsData.service.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" />
<!--<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>-->
</head>
<body class="container">
<div>
<div ng-controller="contactsCtrl as ctrl">
<div class="raw">
<ul class="list-group">
<li class="li-group-item" ng-repeat="obj in ctrl.contacts">
{{obj.name.title + " " + obj.name.first + " " + obj.name.last}}
</li>
</ul>
</div>
</div>
</div>
</body>
</html>
Small correction required in your contactsCtrl
function contactsCtrl(contactDataSvc) {
var vm = this;
contactDataSvc.getContacts()
.then(function(data){
vm.contacts = data;
});
}
You cannot use this inside the then callback as the scope will be different.
Corrected working example here : http://plnkr.co/edit/LLKJipkBbiZ17QjQpw1X
Refer more:
https://www.w3schools.com/js/js_scope.asp
What is the scope of variables in JavaScript?
1 - Is this url correct? http://localhost:3000/contacts
2 - Open the url on any browser, does it return any response ? JSON?
Please check this first to see if the problem is not on the server side.
Firstly inject $scope in controller because anything/data that we want to access over Html from controller needs to be binded on $scope.
So you controller would look like:
(function () {
var myApp = angular.module("app");
myApp.controller("contactsCtrl", contactsCtrl);
function contactsCtrl($scope,contactDataSvc) {
contactDataSvc.getContacts()
.then(function(data){
$scope.contacts = data;
});
}
})();
Secondly from the service you need to return a promise from it only then you will be able to get the data once the response is back from the API.
So,the updated service code is :
(function () {
var app = angular.module("app");
app.service("contactDataSvc", function ($http,$q) {
var self = this;
var defered = $q.defer();
self.getContacts = function () {
var promise1 = $http.get("http://localhost:3000/contacts");
promise1.then(function (response) {
defered.resolve(response.data);
});
return defered.promise;
}
});
})();
So i've split out my UI into subcomponents but then i realise that one of the components requires to be react to a dropdown change which is caught by the parent controller.
I can create a shared service for the variables and i have been able to inject the sub controller so that i can kick off functions BUT.
how do i then use the scope within the sub controller?
var ctrl1= $scope.$new();
$controller('ctrl', { $scope: ctrl1});
ctrl1.GetData();
this works fine. I can see data coming back in the console. BUT my ui doesnt change. What am i missing?
I've edited the post to illustrate what i'm attempting to do more clearly.
The drop down on change is caught by the parent controller but i then require the child controller to run away and get some data and update the UI.
It's an attempt to split out the components. Is this possible? Or have a split the components out too far?
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0/angular.min.js"></script>
<script>
angular.module('app2', [])
.controller('ctrl2', ['$scope', '$http', function($scope, $http){
$scope.getdata = function(){
$http.post(WebServiceURL)
.success(function(data){
$scope.app2Data = "test2 data";
});
}
}]);
angular.module('app1', ['app2'])
.controller('ctrl1', ['$scope','$controller',function($scope, $controller){
$scope.name = 'Controller 1';
//just something to put in the ddp
$scope.data = [
{id:1, name: "test"},
{id:2, name: "test2"}
]
$scope.makeChanged = function(id){
//ddp has changed so i refresh the ui with some other data which is in got by ctrl2.
var cl2 = $scope.$new();
$controller('ctrl2', { $scope: cl2 });
cl2.getdata();
}
}]);
</script>
</head>
<body ng-app="app1">
<div ng-controller="ctrl1">
<p>here is: {{name}}</p>
<select ng-model="d" ng-options="d as dat.name for dat in data track by dat.id" ng-change="makeChanged(d.id)"></select>
<div>
{{app2Data.text}}
</div>
</div>
</body>
</html>
for anyone interested here's how i got round this.
I created a shared service between the two controllers. and created a callback on the service. i registered the call back on ctrl2 so when the shared variable changed the controller2 will do what i want it to and scope is freshed.
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0/angular.min.js"></script>
<script>
angular.module('app1', ['app2'])
.controller('ctrl1', ['$scope', '$controller', 'appointmentSharedProperties',
function($scope, appointmentSharedProperties) {
$scope.name1 = 'Controller 1';
console.log('ctrl1');
//just something to put in the ddp
$scope.data = [{
id: 1,
name: 'test'
}, {
id: 2,
name: 'test2'
}];
$scope.makeChanged = function(value) {
//ddp has changed so i refresh the ui with some other data which is in got by ctrl2.
appointmentSharedProperties.setDetail(value);
console.log('in makeChanged: ' + value);
}
}
]).service('appointmentSharedProperties', function() {
var test = '';
var __callback = [];
return {
getDetail: function() {
return test;
},
setDetail: function(value) {
test = value;
if (__callback.length > 0) {
angular.forEach(__callback, function(callback) {
callback();
});
}
},
setCallback: function(callback) {
__callback.push(callback);
}
};
});
angular.module('app2', [])
.controller('ctrl2', ['$scope', 'appointmentSharedProperties',
function($scope, appointmentSharedProperties) {
$scope.name2 = 'Controller 2';
console.log('ctrl2');
var getdata = function() {
console.log('in getdata');
$scope.app2Data = appointmentSharedProperties.getDetail();
}
appointmentSharedProperties.setCallback(getdata);
}
]);
</script>
</head>
<body ng-app="app1">
<div ng-controller="ctrl1">
<p>here is: {{name1}}</p>
<p>here is: {{name2}}</p>
<select ng-model="d" ng-options="d as dat.name for dat in data track by dat.id" ng-change="makeChanged(d.name)"></select>
<div>
{{app2Data}}
</div>
</div>
</body>
</html>
General example of how to pass variables from one controller to other
<html>
<head>
<meta charset="ISO-8859-1">
<title>Basic Controller</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js">
</script>
</head>
<body ng-app="myApp">
<div ng-controller="ctrl1">
{{greeting}}
</div>
<div ng-controller="ctrl2">
{{dataToHtml2}}
</div>
</body>
</html>
This is the javascript file for this
var myApp = angular.module('myApp',[]);
myApp.service('sampleService', function(){
var temp = '';
this.setValue = function(data){
temp = data;
}
this.getValue = function(){
return temp;
}
});
myApp.controller('ctrl1', function($scope,sampleService) {
$scope.greeting = 'This line is in first controller but I exist in both';
var data= $scope.greeting;
sampleService.setValue(data);
});
myApp.controller('ctrl2', function($scope, sampleService){
$scope.dataToHtml2 =sampleService.getValue();
});
Here is the blog that explains this flow : Frequently asked questions in angularjs
It has the demo of what I written. Happy coding..!!