I'm trying to learn AngularJS starting with that example: http://jsfiddle.net/mjaric/pJ5BR/
but when I tried to download in localhost, not works. I think that is a URL problem in /echo/json':
$scope.loadPeople = function() {
var httpRequest = $http({
method: 'POST',
url: '/echo/json/',
data: mockDataForThisTest
}).success(function(data, status) {
$scope.people = data;
});
};
But I don't know how to solve it. Any idea or hint?
My finally idea is load json from a search petition. It's possible that 'data' will be charged from web or online.
The url: '/echo/json/' is a feature of JsFiddle. If you look at the tabs to the left, in Ajax Requests you can see the usage. It probably won't work with this url in localhost.
You need to create a web project, where you can send your request. You could send some search parameters from client side, then filter the data with those parameters in the server and then return the filtered data to show.
The following article will give you some good ideas
http://tutorials.jenkov.com/angularjs/ajax.html
This link provides a hands on example by a really good tutor.
http://weblogs.asp.net/dwahlin/learning-angularjs-by-example-the-customer-manager-application
Related
controller:
$scope.fileToUpload = function(input) {
if (input.files && input.files[0]) {
CommonService.uploadContactImage.upload({
fileName : input.files[0].name
}, input.files[0], function(data) {
});
}
}
Service:
uploadContactImage:function(input){
console.log("game image");
var req = $http({method: 'POST', url: options.api.base_url + '/gameimageupload/',
dataType: 'json', headers: {'Content-Type': undefined}})
.success(function (data)
{
console.log("data" + data);
return data;
});
If you take a good look at your code you will see that there are quite a few things wrong with it. For example, you have defined in your service an uploadContactImage function which takes a single Javascript object as argument (input), while in your controller you attempt to call CommonService.uploadContactImage.upload(...) instead of CommonService.uploadContactImage(...). Additionally, even if the uploadContactImage function was called correctly it doesn't actually do anything with its argument, ie. the input object is never used in the function body.
These issues aside you cannot submit a file to the server just by adding it to the body of a POST request the way you (seem to be) trying to do. Without going into too much detail here, in order to upload a file from the browser a request with content type multipart/form-data needs to be submitted, which will contain your file as well as the necessary HTTP headers for the server to identify it and parse it correctly. I suppose you could try and construct this request yourself, however it's not a task for the faint-hearted. What I would suggest instead is to use one of the many file upload modules available for Angular.js. A Google search will give you quite a few modules that you can check out to see which better fits your needs.
I have the following scenario, a page that will show different widgets with different data, the back-end is ASp.NET Web API 2 with SQL Server and EF + Repository Pattern + Unit Of Work.
If I have to show quite some data, including user profile and other information on top of the widgets information, what will you recommend:
make one big $http.get request that will return a big json and bind that one to the UI
or
each controller (service) when it loads will make it's unique call to back-end and get's the data it needs to display, that means each widget will make a call to back-end and retrieve it's values.
I just want to know what do you recommend as a best practice.
IMHO the best way is to separate every request into single service methods that way you can reuse just a part of it and not make server calls to load to whole data, check the angular-resource $resource to have a clean reusable service of server calls and not a bunch of $https arround your code:
example:
A service that points some url of your backend server
.factory('ClientService', ['$resource', function($resource){
return $resource('http://some_url/:controller/:method', null, {
"agents": { method: 'GET', params: { controller: 'agent', method: 'search' }, cache: false },
"query": { method: 'GET', params: { controller: 'client', method: 'search' }, cache: false },
"save": { method: 'POST', params: { controller: 'client', method: 'save' } },
"delete": { method: 'POST', params: { controller: 'client', method: 'delete' } }
})
}])
The use in the controller (Injecting ClientService as dependency)
// If i want to query the agents into a scope element
// that will call the url = http://some_url/agent/search
$scope.agents = ClientService.agents();
// If i want to query a single client i cant send adtional params
// as is a get request it will call http://some_url/client/search?id=5
$scope.client = ClientService.query({id:5});
// and you can event manage callbacks if you want to
// This will send the client object to the url = http://some_url/client/save
ClientService.save($scope.client).$promise.then(function(response){ alert(response) })
As you can see this way you can access just the things you need from the backend server not having to do all the callback response if you dont need to and in a reusable cleaner way
Info Angular Resource Docs
I think it depends...
If performance might be a problem you should think about what is best for your User... Will the overhead of making 4 HTTP requests affect the user experience in anyway? Also, would a one big request take too much time to retrieve info from the database?
However if you want just to use a developer perspective of the problem, I'd prefer doing 1 generic API call then calling it 4 times in Angular with different parameters for each Widget.
It is likely that making 4 requests will actually be faster. Not to mention the data can start being populated on the screen as it comes back, instead of needing to wait for the slowest service.
For the max number of concurrent AJAX requehttp://www.coderanch.com/t/631345/blogs/Maximum-concurrent-connection-domain-browsers
I had been searching for this same issue here, I found something but all that seems to not be working for me. Let me describe my scenario:
I am adding some features to a Web app done by myself, that Web app is used to manage the developing of the webpage of some customers. Each customer has a webpage and for each customer there are a list of proposals webpages and who of the designers did that proposal, fine.
The list of the developers and be able to see who did what is the new thing in the Web app and the reason of my question, so, the problem is:
Once the web app loads I get the list of developers from the DB and a list of all the customers that have a webpage. So, the next thing the web app does is auto-select the first customer of the list and show its proposals in another list. To do that, the list of the developers is needed, but as it hasnt been still loaded I get the:
Cannot read property '0' of undefined
When I want to iterate over the $scope.developers object
What I do to get the developers is a $http call like this:
$http({
method: 'POST',
url: url,
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
}).success(function(data) {
$scope.developers = data;
});
I know $http performs async calls, but i need something that waits until the $scope.developers has the data loaded.
The problem comes when I need to use the data supposedly stored in $scope.developers but obvously its not. I tried to call the function that uses the $scope.developers inside the .success function but the same happens.
I tried to use the solution in this thread but I get the same error.
How to wait till the response comes from the $http request, in angularjs?
Any help ?? If something in my question is not clear I will try to explain it better.
Please just define $scope.developers as empty array before $http call ie
app.controller("someCtrl", function($scope, $http) {
$scope.developers = [];
//....
$http({
method: 'POST',
url: url,
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
}
}).success(function(data) {
$scope.developers = data;
});
//..
});
I'm working on an API with FosRestBundle and AngularJS for the front part.
GET requests working but i have problems with POST requests. In the API controller the request object is empty..
Here is the front part
$http.post(Route.api + '/leads', {lead: "test"}).success(function(data) {
});
And here is the FosRestBundle controller
public function postAction(Request $request) {
var_dump($request->request->all()); // empty ? :(
}
Someone already have the same problem ?
Thanks ;)
Yes I had such problem, and I've solve this problem passing Content-Type header to Symfony, here is my code example
return $http({
method: 'POST',
url: Route.api + '/leads',
data: dataYouWantToSend, //see the note regarding this parameter
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
})
NOTE :
If you pass data parameter with object, you will receive in in the POST your data by JSON with key of your JSON's root.
If you want to receive it like form data, you have to convert it to querystring (e.g. ?deal=test&ok=1), for example if you're using jQuery too, you can convert it like this
var dataYouWantToSendQueryString = $.param(dataYouWantToSend);
hope it will help you too.
P.S. I've researched and haven't found how to convert object to query string in angular, so if Angular has such functionality, I will glad to know about it, if someone know, please comment.
I am using the following plugin https://github.com/VividCortex/angular-recaptcha in order to use recaptcha at a login form.
I am using the following code for verification
$http({
url: 'https://www.google.com/recaptcha/api/verify',
method: 'POST',
params: {privatekey: "key", remoteip: "userip", challenge: "challenge", response: "user_answer" },
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
}).success(function(data) {
console.log(data);
if (valid) {
console.log('Success');
alert('Success');
} else {
console.log('Failed validation');
alert('Fail');
// In case of a failed validation you need to reload the captcha because each challenge can be checked just once
//vcRecaptchaService.reload();
}
});
But google server is not returning anything.
I updated the code but no luck.
I think you have a typo in your code:
post: 'GET'
Change that to method: 'GET' or method: 'POST'.
You can check out angular documentation on http to make sure you've written all the params right.
If this wasn't the source of your problems, you should post more details about your issue (what do you see in your networkl console for example).
Keep in mind that recaptcha validation must be done at server-side. I'm not 100% sure that you are doing that in the browser, but your code looks like it.
As Miguel Trias stated, you shall not validate directly from angularjs/javascript client, instead you should send the challenge and response field to your server and validate then.
Therefore you can use the uri you used (https://www.google.com/recaptcha/api/verify) or a plugin, e.g. if you use php see https://developers.google.com/recaptcha/docs/php. I'd prefer a plugin because it will save work.
Furthermore keep in mind that your private key should not be used in the client, this is why it is called private. It is only used to communicate between your server and the reCaptcha servers. The public key is used to communicate between your client and the reCaptcha servers.
For more info read the Overview