I am trying to post data to my Strapi project from a Flutter app.
I made sure that the permissions are enabled for unauthenticated users.
What is wrong with my request?
Future saveReview(usrReview, usrRating) async {
const endpoint = 'http://localhost:1337/api/reviews';
var url = Uri.parse(endpoint);
Map<String, String> headers = {
'Content-Type': 'application/json; charset=UTF-8',
};
var reviewObj = jsonEncode({
'review': usrReview,
'rating': usrRating,
});
var response = await http.post(
url,
headers: headers,
body: reviewObj,
);
print(response.statusCode);
}
The problem was that the structure of reviewObj was missing something. I had to include 'data' in it for it to work. Here is what the correct body should look like.
var reviewObj = jsonEncode({
'data': {
'review': usrReview,
'rating': usrRating,
}
});
I think this might fix you're problem! I recently ran into this same error a few days ago!
Basically you have to send the body of the POST request as a string.
Here's what it should look like!
Future saveReview(usrReview, usrRating) async {
const endpoint = 'http://localhost:1337/api/reviews';
var url = Uri.parse(endpoint);
Map<String, String> headers = {
'Content-Type': 'application/json; charset=UTF-8',
};
// Pass the JSON data as a whole string. Then the server should parse it
var reviewObj = '{"review": $usrReview, "rating": $usrRating}';
var response = await http.post(
url,
headers: headers,
body: reviewObj,
);
print(response.statusCode);
}
Give that a try and let me know if that works!
Related
i am using Angular for front end. i am using the API request to bring languages and phrases. return data is pushed into declared array variable.
```public data = [];
constructor(private http: HttpClient) {
this.getMyLang();
}
async getMyLang() {
const headers = {
headers: new HttpHeaders({
'X-API-KEY': 'xxxxxx',
})
};
const param = new FormData();
param.append('language', 'en');
await this.http.post('api url', param, headers).subscribe((data1) => {
this.data.push(data1);
});
}```
when i call this method it pushes the data. after console this variable into component am getting following results.
console Screenshot enter code here
My breeze services works great. But I just moved it behind a WSO2 API Manager. It now needs a Bearer Token for each call.
I have the Bearer Token. But I can't seem to figure out how to add it to the Metadata Call.
I tried something like this. But it did not add a header to the metadata call:
var ajaxAdapter: any = breeze.config.getAdapterInstance('ajax');
ajaxAdapter.defaultSettings = {
headers: {
"X-Test-Header": "foo2"
}
}
Does the fetchMetadata use a different system from the ajax adapter?
How can I add a header to the Fetch Metadata call?
Turns out I was using the Fetch API. So I had to do it that way. Here is what my setup looks like:
setupFetchClient() {
let httpClient = new HttpClient();
httpClient.configure(config => {
config.withDefaults({
headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
}
})
.withInterceptor({
request(request: Request) {
let accessToken = getAccessToken();
request.headers.append('Authorization', 'Bearer ' + accessToken);
return request;
},
responseError(error) {
return error;
}
})
.useStandardConfiguration();
});
// Aurelia Specific Code.
Container.instance.registerInstance(HttpClient, httpClient);
}
According to backend, I require to pass 3 argument through post request, this backend function is:
public ResponseModel Post([FromBody] CourseFileUpload item, string fileName, Stream fileToUpload)
now I am trying to pass the argument like this:
uploadFile(uploadData:ModelToFileSteam):Observable<ModelToFileSteam> {
const fileName = uploadData.fileName;
console.log('file name is', fileName);
const headers = new HttpHeaders({ 'Content-Type': 'application/json', 'Access-Control-Allow-Origin':'*' });
return this.http.post<ModelToFileSteam>(environment.baseUrl+`CourseFileUpload`, uploadData.fileToUpload, uploadData.fileName, uploadData.uploadStream)
.pipe(
map(data => {
return data;
} ),
catchError(this.handleError)
)
}
But getting error, not able to pass 3 arguments at all. what is the correct way to do this?
any one help me?
I will suggest wrapping all in a single object. And send it to backend.
Or just send uploadData
return this.http.post<ModelToFileSteam>(environment.baseUrl+`CourseFileUpload`, uploadData)
.pipe(
map(data => {
return data;
} ),
catchError(this.handleError)
)
And in the backend, you can get uploadDate like req.body.uploadData
To check you can console.log(uploadData.fileName);
its my working example
this.http.post<Customer>(this.base_url + 'v1/customers', client, this.getHeaders());
Where client is customer object and this.getHeaders() is:
getHeaders() {
return {
headers: new HttpHeaders({
'Content-Type': 'application/json; charset=utf-8',
})
};
}
Good luck!
Is it possible to add some headers, before sending a request to GET action ?
What I want to do, is to specify headers like:
-Accept application/json
-Content-Type application/json
...
before entering a GET method in my controller.
If you are using HttpClient sending a GET request with Accept and Content-Type headers would look something like this:
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, requestUri)
{
Content = content,
};
request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
HttpResponseMessage response = await client.SendAsync(request);
Keep in mind that the code uses the Async version of sending the request, so you have to decorate your method with the "Async" keyword in order for this to work.
If you want to send the request from the front-end you should use ajax and your code would look something like this:
$.ajax({
url: 'URL HERE',
type: 'GET',
contentType: "application/json; charset=utf-8",
dataType: 'json',
success: function (data) {
// here goes the data that came from the response..
}
});
How about this?
$.ajax({
url: '#Url.Action("GetData", "Home")',
type: "GET",
contentType: "application/json; charset=utf-8",
dataType: 'json',
success: function (result) {
}
});
Controller
public ActionResult GetData()
{
return Json("What I want to send", JsonRequestBehavior.AllowGet);
}
I am initiating a post request from Angular2 to a ASP.NET 5 controller action. Angular is posting the data correctly and hitting the controller action but it is not being mapped to the parameters defined in controller action, the parameters are null. Meanwhile by inspecting through Request object Request.Form has the correct textual data but not binding to the model.
Angular
let body = JSON.stringify({ firstName: 'Ali' });
let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
this.http.post(this.url, body, { headers: headers })
.subscribe(
(data) => {
console.log('Response received');
console.log(data);
},
(err) => { console.log('Error'); },
() => console.log('Authentication Complete')
);
ASP.NET
[HttpPost]
public IActionResult DemoAction(string firstName)
{
var req = Request;
return null;
}
Request.Form has data in the form like {\"firstName\":\"Ali\"} but the parameter firstName is null
You try to send a JSON content (created using the JSON.stringify method) with a content type url encoded form.
You should try to use the application/json one:
let body = JSON.stringify({ firstName: 'Ali' });
let headers = new Headers({ 'Content-Type': 'application/json' });
this.http.post(this.url, body, { headers: headers })
Edit
If you want to provide a form content, you could leverage the URLSearchParams class:
var params = new URLSearchParams();
params.set('firstName', 'Ali');
let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
this.http.post(this.url, params.toString(), { headers: headers })
In this case you don't require to pass the header. look at here. you may try this.
this.http.post('/api/ControllerName/DemoAction?firstName=Ali')
.subscribe(
(data) => {
console.log('Response received');
console.log(data);
},
(err) => { console.log('Error'); },
() => console.log('Authentication Complete')
);
This will surely work.
Edited:
Figured out your problem.
First: When you are receiving paramter(s) at API end , you must use above portion.
second: When you are receiving object at API end, you must use below code.
I'm showing you with my setup as I don't know your object at server side.
let um=JSON.stringify({ Username: "Hello1",Password:"Hello2"});
let headers = new Headers({ 'Content-Type': 'application/json'});
this.http.post(this.url+'/Authentication',um,{ headers: headers })
.subscribe(...);
At server side I have following setup.
public class UserModel
{
public string Username { get; set; }
public string Password { get; set; }
}
[HttpPost]
public IHttpActionResult Authentication(UserModel um) // I m getting value here.
{
if (um.Username == "a" && um.Password == "a")
{
um.Username = um.Username;
um.Password = um.Password;
return Ok(um);
}
return NotFound();
}
Simple solution !! isn't it?
For me it works:
let headers = new Headers({ 'Content-Type': 'application/json' });
this.http.post(this.url, JSON.stringify({ firstName: 'Ali' }), { headers: headers })