I just started learning Angularjs and I am facing a peculiar problem. If I get my $http post to work, the rest of my code doesn't, and the other way around- if everything else works my $http post doesn't. Does it have to do with my controller? Should I use a factory?
angularjs file:
var app = angular.module('emailApp', []);
app.controller('EmailController', function($scope, $http) {
$http({
method: "post",
url: "php.php",
data: $.param($scope.composeEmail),
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
}).then(function(response){
$scope.data = response.data;
});
$scope.isPopupVisible = false;
$scope.isComposePopupVisible= false;
$scope.composeEmail = {};
$scope.activeTab = "inbox";
$scope.sentEmails = [];
$scope.sendEmail = function() {
$scope.isComposePopupVisible = false;
$scope.composeEmail.date = new Date();
$scope.sentEmails.push($scope.composeEmail);
};
$scope.showComposePopup = function() {
$scope.composeEmail = {};
$scope.isComposePopupVisible = true;
};
$scope.showPopup = function(email) {
$scope.isPopupVisible = true;
$scope.selectedEmail = email;
};
});
Related
firstapp
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $http) {
$http.get("welcome.htm").then(function (response) {
$scope.myWelcome = response.data;
});
});
sencond app
var app = angular.module('myApp2', []);
app.controller('myCtrl2', function($scope, $http) {
$http.get("fsd.htm").then(function (response) {
$scope.myWelcome = response.data;
});
});
How to Pass data from one app to another app in angularjs ?
You can use shared service to communicate between two angular apps.
However using multiple apps is not a good practice unless it is the only option left.
angular.module('sharedService', []).factory('SharedService', function() {
var SharedService;
SharedService = (function() {
function SharedService() {}
SharedService.prototype.setData = function(name, data) {};
return SharedService;
})();
if (typeof(window.angularSS) === 'undefined' || window.angularSS === null) {
window.angularSS = new SharedService();
}
return window.angularSS;});
angular.module("angularApp1", ['sharedService'])
/*code */
angular.module("angularApp2", ['sharedService'])
/*code */
Create function like this in Service Lyaer
editTool: function(yourData) {
var basicAuth = YOurauthenticateFuntion;
var url = 'url';
var deferred = $q.defer();
$http.post(url, yourData, {
headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
'Authorization': basicAuth
}
}).then(function(data) {
if(data.status == 200) {
deferred.resolve(data.data);
} else {
deferred.reject(data);
}
}, function(error) {
deferred.reject(error);
});
return deferred.promise;
}
and then can call in any controller using factory name.. that you have created for serviceCalls
Hello here's my json "names" :
[
{
"file": "file1.zip",
"date": "12-03-2016",
},
{
"file": "file2.zip",
"date": "24-06-2016",
},
{
"file": "file3.zip",
"date": "02-12-2016",
}]
My javascript file:
var app = angular.module('app', []);
app.service('service', function($http, $q){
var deferred = $q.defer();
$http.get('newapi.json').then(function(data){
deferred.resolve(data);
});
this.getNames = function(){
return deferred.promise;
}
});
app.controller('FirstCtrl', function($scope, service){
var promise = service.getNames();
promise.then(function(data){
$scope.names = data.data;
$scope.namesplit = $scope.names;
$scope.namesplit.map(function(item) {
item.time = new Date(item.date * 1000);
});
console.log($scope.namesplit);
});
});
and HTML :
<tr ng-repeat="name in names">
<td>{{name.file}}</td>
<td>{{name.date}}</td>
<td><button>POST</button></td>
</tr>
Well i have a table and what i need is when i click on button, the "file" post to serwer. I know i must use $http.post but i don't know how to do it.
So Simple
Html
<button ng-click="post()">Click Me</button>
Controller
$scope.post=function(){
$http.post(URL HERE, data-here, {
})
.then(function onSuccess(response) {
// Handle success
var data = response.data;
var status = response.status;
var statusText = response.statusText;
var headers = response.headers;
var config = response.config;
...
}).
catch(function onError(response) {
// Handle error
var data = response.data;
var status = response.status;
var statusText = response.statusText;
var headers = response.headers;
var config = response.config;
...
});
}
For upload a file using $http.post() function you have to set some additional parameters like headers and and transformRequest.
Here a simple example:
$scope.postToServer = function(){
var fd = new FormData();
fd.append('file', file);
$http.post(uploadUrl, fd, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
})
.success(function(){
})
.error(function(){
});
}
Note: in this example the file var is the content of the file located on client file system and the uploadUrl is the URL of your service that handle the request.
I am new on angular JS. I am tried to implement $http in the response of $http.
My issue is that when i call $http in response of anoter $http. It doesn't show the data on view. The view is rendered before the second $http call. I have used promises but no luck. Here is the code from other answer which i used by changing a little.
angular.module('App', [])
.controller('Ctrl', function($scope, resultsFactory) {
resultsFactory.all().then(
function(res){
$scope.results = res;
},
function(err){
console.error(err);
}
);
})
.factory('resultsFactory', function($http, $timeout, $q) {
var results = {};
function _all(){
var d = $q.defer();
$http({
url: url,
method: 'POST'
}).then(function (response) {
var f = {};
f.id = response.data.id;
f.name = response.data.name;
$http({
url: url,
data: "id="+response.data.parent_id,
method: 'POST'
}).then(function (response1) {
f.parentname = response1.name;
d.resolve(f);
});
});
return d.promise;
}
results.all = _all;
return results;
});
The id and name is shown properly on view but it is showing nothing for parent name. I have debug it. It is undefined when rendering view. After rendering it is setting their value to parentname. Can any one help me to resolve this issue?
You shouldn't need a deferred for this: just chain the promises:
return $http({
url: url,
method: 'POST'
}).then(function (response) {
var data = {};
data.id = response.data.id;
data.name = response.data.name;
return $http({
url: url,
data: "id="+response.data.parent_id,
method: 'POST'
}).then(function (response1) {
data.parentname = response1.name;
return data;
});
});
You overwrote your d variable...
.factory('resultsFactory', function ($http, $timeout, $q) {
var results = {};
function _all() {
var d = $q.defer();
$http({
url : url,
method : 'POST'
}).then(function (response) {
var secondD = {};
secondD.id = response.data.id;
secondD.name = response.data.name;
$http({
url : url,
data : "id=" + response.data.parent_id,
method : 'POST'
}).then(function (response1) {
secondD.parentname = response1.name;
secondD.resolve(d);
});
});
return d.promise;
}
results.all = _all;
return results;
});
I have Employee controller which is having property Id, Name , Specification. I have made one Employee service which is having ajax call and get employee list. But every time getting '' in User.
When i debug the code i found that it call success first and then it goes for Ajax call.
When i do ajax call without service it works fine.
angular.module('EmployeeServiceModule', [])
.service('EmployeeSer', ['$http',function ($http) {
this.Users = '';
this.errors = '';
this.SearchEmployee = function () {
// Ajax call
$http({
method: 'GET',
url: '/Home/GetEmployeeList',
params: { filterData: 'Test' },
headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
}).then(onSuccess, onError);
var onSuccess = function (response) {
this.userUsers = response.data;
this.errors = '';
};
var onError = function (reason) {
this.userUsers = reason;
this.errors = "Error in retrieving data.";
};
return this.Users;
}
}]);
angular.module('Employee', ['EmployeeServiceModule'])
.controller('EmployeeController', ['EmployeeSer', '$scope', '$http', function (EmployeeSer, $scope, $http) {
this.Id = '';
this.name = '';
this.expertise = '';
$scope.repoSortOrder = 'id';
$scope.filterField = '';
// Call to service
this.GetAllEmployee = function () {
// Initiates the AJAX call
$scope.User = EmployeeSer.SearchEmployee();
// Returns the promise - Contains result once request completes
return true;
};
this.AddEmployee = function () {
var empData = {
Id: $("#txtId").val(),
Name: $("#txtName").val(),
Expertise: $("#expertise").val()
};
$http({
method: 'POST',
url: '/Home/Create',
params: JSON.stringify(empData),
headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
}).then(onSuccess, onError);
// Returns the promise - Contains result once request completes
return true;
};
var onSuccess = function (response) {
$scope.user = response.data;
$scope.error = '';
};
var onError = function (reason) {
$scope.error = "Error in retrieving data.";
};
}]);
It's because you are returning the users before the data is fetched from the server. Also it doesn't seem like you are assigning them correctly.
Here are two ways to solve the problem:
Firstly. You bind your controller user-data to the user-data in the service.
angular.module('EmployeeServiceModule', [])
.service('EmployeeSer', ['$http',function ($http) {
this.Users = '';
this.errors = '';
$http({
method: 'GET',
url: '/Home/GetEmployeeList',
params: { filterData: 'Test' },
headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
}).then(onSuccess, onError);
var onSuccess = function (response) {
this.Users = response.data;
this.errors = '';
};
var onError = function (reason) {
this.users = null;
this.errors = "Error in retrieving data.";
};
}
}]);
angular.module('Employee', ['EmployeeServiceModule'])
.controller('EmployeeController', ['EmployeeSer', '$scope', '$http', function (EmployeeSer, $scope, $http) {
this.users = EmployeeSer.users;
EmployeeSer.SearchEmployee();
}]);
And the second way would be to return the promise in the service and unwrap it in the controller.
angular.module('EmployeeServiceModule', [])
.service('EmployeeSer', ['$http',function ($http) {
this.SearchEmployee = function () {
return $http({
method: 'GET',
url: '/Home/GetEmployeeList',
params: { filterData: 'Test' },
headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
});
}
}]);
angular.module('Employee', ['EmployeeServiceModule'])
.controller('EmployeeController', ['EmployeeSer', '$scope', '$http', function (EmployeeSer, $scope, $http) {
this.GetAllEmployee = function () {
EmployeeSer.SearchEmployee()
.then(onSuccess, onError)
};
var onSuccess = function (response) {
$scope.user = response.data;
$scope.error = '';
};
var onError = function (reason) {
$scope.error = "Error in retrieving data.";
};
}]);
OFF TOPIC
You should probably consider using ngModel instead of jQuery to get you data to the controller.
Not like this:
var empData = {
Id: $("#txtId").val(),
Name: $("#txtName").val(),
Expertise: $("#expertise").val()
};
// Here serverRequest is my service to make requests to the server
serverRequest.postReq = function(url, data, sucessCallback, errorCallback){
$http({
method: 'POST',
url: urlToBeUsed,
data:data,
headers : {'Content-Type': 'application/x-www-form-urlencoded'}})
.success(function(data, status, headers, config) {
sucessCallback(data);
})
.error(function(data, status, headers, config){
errorCallback(data);
})
}
// In the controller
serverRequest.postReq('urlToBeCalled', dataToBeSent, scope.successCb, scope.errorCb);
scope.successCb = function(data){
// functionality to be done
}
scope.errorCb = function(data){
// functionality to be done
}
Try it this way your problem might be solved
Promise must be unwrapped in your controller if you want to use it
I have read a few forum posts before on angular promises but can't get it to work in my instance. I am using nodejs /locomotive for the backend and Angular form the frontend.
I have the following code in a controller, basically I want to use the path to slides.path, how would I go about doing this using promises? any help would be gratefully received.
function ProductCtrl($scope, $http, $q) {
$scope.events = [];
$scope.times = [];
var html = [];
var chapters = [];
var path;
//var paPromise = $q.defer();
$http({
url: '/show',
method: 'GET',
params: { eventid:$scope.$routeParams.eventid}
}).success(function(response, code) {
$scope.events = response;
angular.forEach($scope.events.slides, function(slide) {
$http({
url: '/upload',
method: 'GET',
params: {uploadid: slide.upload.toString()}
}).success(function(response, code) {
return "http://www.example.com/"+response.path;
},path);
slide.path = path;
chapters.push(slide);
});
});
}
You can use $q.all do get this multiple promise problem done. Like this:
function ProductCtrl($scope, $http, $q) {
$scope.events = [];
$scope.times = [];
var html = [];
var path;
function fetchChapter() {
var chapters = [];
var httpPromise = $http({
url: '/show',
method: 'GET',
params: {
eventid: $scope.$routeParams.eventid
}
});
//Return the value http Promise
return httpPromise.then(function (response) {
$scope.events = response;
var promises = [];
angular.forEach($scope.events.slides, function (slide) {
var inPromise = $http({
url: '/upload',
method: 'GET',
params: {
uploadid: slide.upload.toString()
}
}).then(function (response, code) {
//each promise makes sure, that he pushes the data into the chapters
slide.path = "http://www.example.com/" + response.path;
chapters.push(slide);
});
//Push the promise into an array
promises.push(inPromise);
});
//return the promise from the $q.all, that makes sure, that all pushed promises are ready and return the chapters.
return $q.all(promises).then(function () {
return chapters;
});
});
}
fetchChapter().then(function(chapters){
//populate here
});
}
The httpPromise will return the promise from $q.all.
EDIT: How to fetch the data then
Wrap a function around, i did with fetchChapter and pass a function into the then there will be the value you need as a parameter.