Hello first of all thanks for your support,
I getting started with angular and I am trying to use conmsume data from an API for my app. I am having a few problems with this.
First of all CORS:
To run local http server I am using the one that comes with node.js (using http-server command).
I am using http://www.mocky.io/ to test the app. I've generated differents (with headers I've found around the net that are supposed to fix it) response there to try to fix CORS (always getting preflight error) but nothing seems to work.
I have added this to my save method (inside a factory):
save: {
method: 'POST',
headers: {
'Access-Control-Allow-Origin': '*'
}
}
If I use a Chrome extension called CORS I can bypass that and receive response but then I am not able to manage the promise and get the data inside the response. I would like to be able to show the response's json on the view.
$scope.submitForm = function() {
var promise = null;
promise = CheckFactory.save($scope.partner).$promise;
$scope.result = promise.data;
}
This functions sends the data from the form to the factory and perform the request but then I am lost and do not know how to manage the data I need from the response.
Thanks in advance :)
Basically you need to put .then function over your save method call promise. So that will call .then function's once data save request gets completed.
$scope.submitForm = function() {
CheckFactory.save($scope.partner).$promise
//it will called success callback when save promise resolved.
.then(function(data){ //success
$scope.result = data;
}, function(error){ //error
});
}
Related
I've put together the following code from learning about the fetch API. I am trying to replace AJAX and this looks wonderful so far.
Main Question:
According to the Fetch API documentation...
A fetch() promise will reject with a TypeError when a network error is
encountered or CORS is misconfigured on the server side, although this
usually means permission issues or similar — a 404 does not constitute
a network error, for example.
Having the 3 technologies working together...
If I disable the Web Server I get:
NetworkError when attempting to fetch resource.
Wonderful. That works great.
If I disable MySQL I get my custom error from PHP:
MySQL server down?
Wonderful. That works great.
If I disable PHP I get exactly nothing because the only way I can think of to pass through the Web Server request and trigger an error at the PHP level is with a... timeout.
After some research, I don't think there is a timeout option... at least not yet.
How could I implement it in the code below?
// CLICK EVENT
$( "#btn_test" ).on('click', function() {
// Call function
test1();
});
function test1() {
// json() - Returns a promise that resolves with a JSON object.
function json_response(response) {
// Check if response was ok.
if(response.ok) {
return response.json()
}
}
// data - Access JSON data & process it.
function json_response_data(data) {
console.log('json_response_data: ', data);
}
// URL to post request to...
var url = 'data_get_json_select_distinct_client.php';
// Sample serializeArray() from html form data.
// <input type="text" name="CLIENT_ID" value="1000">
var post_data = [{
"name":"CLIENT_ID",
"value":"1000"
}];
// STRINGIFY
post_data = JSON.stringify(post_data);
// FETCH
fetch(url, {
method: 'post',
headers: new Headers({'Content-Type': 'application/json; charset=utf-8'}),
body: post_data
})
// VALID JSON FROM SERVER?
.then(json_response)
// ACCESS JSON DATA.
.then(json_response_data)
// ERROR.
.catch(function(error) {
console.log('Web server down?: ', error.message);
});
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<button type="button" id="btn_test">FETCH RECORD</button>
Your server should be returning some sort of 5xx error code, should there be a problem server-side. This error is catchable in your JS.
I started an AngularJs App and to retrieve some data from database I'm using NodeJS (totally new to me), on the console of NodeJS it works and also typing the URL directly in the browser but when I try to get the information needed using http.get() in AngularJS using the same URL in the browser I get 404 not found.
I figured it would be a cors problem so I added
require('cors') in the nodeJS app and still doesn't work
Can anyone help me with that ?
Am I right making separate apps for Angularjs in front-end and NodeJS in the Backend or should I assemble them in only one application ?
Thank you for your help
This is the AngularJS code:
$scope.keyLoad = function () {
$http.get("localhost:8080/product")
.success(function (response) {
$scope.keys = response;
console.log(response)
})
};
$scope.keyLoad();
I get 404 not found. I figured it would be a cors problem
If it says it is a 404 error then it is a 404 error and not a CORS problem.
Look at your code:
$http.get("localhost:8080/product")
That URL is missing the scheme. It is a relative URL.
You are going to be requesting something like http://example.com/myapp/localhost:8080/product.
Put http:// or https:// in front of it.
You should use $http service.
For example:
$http({
method: 'GET',
url: '/someUrl'
}).then(function successCallback(response) {
// this callback will be called asynchronously
// when the response is available
}, function errorCallback(response) {
// called asynchronously if an error occurs
// or server returns response with an error status.
});
Or
$http.get('/someUrl', config).then(successCallback, errorCallback);
i building an API service in angular and laravel, when i firing a GET call to the API everythings work fine, but when i fire POST call the service still use GET method instead of POST.
that is my service:
function LeadsAPI($http,$q,BASE_URL)
{
this.updateLead = function (lead_data) {
var url = BASE_URL+"/leads/update/";
var deferred = $q.defer();
$http.post(url , lead_data).then(function(response){
deferred.resolve(response.data);
});
return deferred.promise;
}
}
i call to this function from a Controller:
LeadsController.$inject = ['$scope', 'LeadsAPI'];
function LeadsController($scope , LeadsAPI)
{
LeadsAPI.updateLead({'lead_id' : res._id, 'the_lead': {'fist_name' : 'asd asd'}}).then(function (res) {
console.log(res);
});
}
i tried pass the parameters as a string ("a=b&c=d...") and added header :
$http.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';
in the run function at my App module instantiation but yet, i keep getting 405 (Method Not Allowed) error.
any ideas why and how to solve it? thank you very much all! :)
Seems the question is old and unanswered but google led me here. I hope someone will find this answer useful.
I had the same problem. $http was set to POST but server was returning error from GET request.
After checking the headers in a web inspector it shows the browser actually did two requests:
update/ 301 text/html angular.js:11442
update 405 xhr https://test.site/post/update
The first one is the one from $http and the second one is after a redirect.
As you can see the trailing slash URL is redirected to a non trailing one. With this redirect a POST request gets also changed to GET as well.
The solution is to change your request url to not contain trailing slashes:
url: BASE_URL+"/leads/update",
The GET works fine ... good
The POST returns 405 - Method not allowed
It sounds like it is doing a POST and the server you are posting to does not support POST requests to the endpoint in question
Can you please provide more information, such as the HTTP request and response headers when you make a GET request and the same for the POST request
You can access the header information via the NET tab in Firefox's Firebug or in Chrome console
Be sure that your API method is ready to handle a POST request. Maybe Angular is actually firing a POST request, but your method is expecting a GET.
If you are sure Angular is really firing a GET request instead of a POST for some reason, try to explicitly set the HTTP method on the $http object:
$http({
method: 'POST',
url: BASE_URL+"/leads/update/",
data: lead_data
}).then(function (response) {
deferred.resolve(response.data);
});
I am making call to a REST service from my AngularJS app using $http. The issue is whenever I make a GET request from IE8, it gets converted to POST request. Calls with other http methods (POST,PUT) work fine. This happens only with IE8.
Here is my code
```
var request = {method: method, url: url, data: payload};
var promise = $http(request) .then(function (response) {
return response;
});
```
Can someone please help. I have tried sending different types off data payload : null,undefined,empty object, some object. But nothing worked.
I think I have found the solution. We need to send empty string as payload. Or, use $http.get
I'm building an AngularJS (1.2.16) web app with a RESTful API, and I'd like to send 401 Unauthorized responses for requests where authentication information is invalid or not present. When I do so, even with an HTTP interceptor present, I see the browser-presented basic "Authentication Required" dialog when an AJAX request is made via AngularJS. My interceptor runs after that dialog, which is too late to do something useful.
A concrete example:
My backend API returns 401 for /api/things unless an authorization token is present. Nice and simple.
On the AngularJS app side, I've looked at the docs and set up an interceptor like this in the config block:
$httpProvider.interceptors.push(['$q', function ($q) {
return {
'responseError': function (rejection) {
if (rejection.status === 401) {
console.log('Got a 401')
}
return $q.reject(rejection)
}
}
}])
When I load my app, remove the authentication token, and perform an AJAX call to /api/things (to hopefully trigger the above interceptor), I see this:
If I cancel that dialog, I see the console.log output of "Got a 401" that I was hoping to see instead of that dialog:
Clearly, the interceptor is working, but it's intercepting too late!
I see numerous posts on the web regarding authentication with AngularJS in situations just like this, and they all seem to use HTTP interceptors, but none of them mention the basic auth dialog popping up. Some erroneous thoughts I had for its appearance included:
Missing Content-Type: application/json header on the response? Nope, it's there.
Need to return something other than promise rejection? That code always runs after the dialog, no matter what gets returned.
Am I missing some setup step or using the interceptor incorrectly?
Figured it out!
The trick was to send a WWW-Authenticate response header of some value other than Basic. You can then capture the 401 with a basic $http interceptor, or something even more clever like angular-http-auth.
I had this issue together with Spring Boot Security (HTTP basic), and since Angular 1.3 you have to set $httpProvider.defaults.headers.common["X-Requested-With"] = 'XMLHttpRequest'; for the popup not to appear.
For future reference
I've come up with this solution when trying to handle 401 errors.
I didn't have the option to rewrite Basic to x-Basic or anything similar, so I've decided to handle it on client side with Angular.
When initiating a logout, first try making a bad request with a fake user to throw away the currently cached credentials.
I have this function doing the requests (it's using jquery's $.ajax with disabled asynch calls):
function authenticateUser(username, hash) {
var result = false;
var encoded = btoa(username + ':' + hash);
$.ajax({
type: "POST",
beforeSend: function (request) {
request.setRequestHeader("Authorization", 'Basic ' + encoded);
},
url: "user/current",
statusCode: {
401: function () {
result = false;
},
200: function (response) {
result = response;
}
},
async: false
});
return result;
}
So when I try to log a user out, this happens:
//This will send a request with a non-existant user.
//The purpose is to overwrite the cached data with something else
accountServices.authenticateUser('logout','logout');
//Since setting headers.common.Authorization = '' will still send some
//kind of auth data, I've redefined the headers.common object to get
//rid of the Authorization property
$http.defaults.headers.common = {Accept: "application/json, text/plain, */*"};