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Fetch client having an issue with JSON array assignment


Fetch client having an issue with JSON array assignment

By : Viobel
Date : November 19 2020, 03:01 PM
Hope that helps I believe your specific issue may be caused by an older version of TypeScript (2.1, the latest is 2.5). If you have an opportunity to do so, you can try updating it.
response in the statement response => is of type Response defined by Aurelia. When you are running this.files = files, it seems like TypeScript thinks that files is of type Response. You are already implicitly declaring this.files as type any[], so the assignment is not allowed.
code :
.then((files: any[]) => this.files = files);


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Encode JSON From MySQL Fetch Assoc & Fetch Array

Encode JSON From MySQL Fetch Assoc & Fetch Array


By : jajoko
Date : March 29 2020, 07:55 AM
this one helps. You can just do the calculation in SQL, without having to add the column.
code :
SELECT FirstName, LastName, NumberOfChildren, SchoolTuition, 
    (NumberOfChildren * SchoolTuiton) AS TotalSchoolTuiton 
FROM User WHERE User.Username = '$Username' LIMIT 1
Can I fetch a Readable Stream then convert to JSON client side?

Can I fetch a Readable Stream then convert to JSON client side?


By : Fsherratt
Date : March 29 2020, 07:55 AM
around this issue Since CSV is simply text, the solution is the use the response.text() method of the fetch() API.
https://developer.mozilla.org/en-US/docs/Web/API/Body/text
code :
fetch('https://docs.google.com/spreadsheets/d/e/KEY&single=true&output=csv')
  .then(response => response.text())
  .then(transform);

function transform(str) {
  let data = str.split('\n').map(i=>i.split(','));
  let headers = data.shift();
  let output = data.map(d=>{obj = {};headers.map((h,i)=>obj[headers[i]] = d[i]);return obj;});
  console.log(output);
}
json = JSON.stringify(output);
Why does using a destructuring assignment on a fetch response cause the .json() method to disappear?

Why does using a destructuring assignment on a fetch response cause the .json() method to disappear?


By : Brahim Ayari
Date : March 29 2020, 07:55 AM
will help you
The rest operator breaks it, which I do not understand. Is it making a new object and refusing to copy properties over?
code :
const response = await fetch('https://reqres.in/api/users?page=2');
const { json } = response;
console.log(await json.call(response));
React-native array data assignment with fetch

React-native array data assignment with fetch


By : user2449275
Date : March 29 2020, 07:55 AM
may help you . You can create a class component with the initial state of data as an empty array, and then get the real data in the componentDidMount hook and put it in state.
Example
code :
function getMoviesFromApiAsync() {
  return fetch("http://localhost:8080/JweSecurityExample/rest/security/retrieveItems")
    .then(response => response.json())
    .catch(error => {
      console.error(error);
    });
}

class App extends React.Component {
  state = {
    data: []
  };

  componentDidMount() {
    getMoviesFromApiAsync().then(data => {
      this.setState({ data });
    });
  }

  render() {
    return <div>{JSON.stringify(this.state.data)}</div>;
  }
}
issue while fetch data from nested json array

issue while fetch data from nested json array


By : user2960172
Date : March 29 2020, 07:55 AM
I hope this helps you . I am fetch JSON data from API and I am getting response successfully but there are some issue for me that how to get direct value without key first let me show you my response , You should create these models for response:
code :
/// Main response model
struct ResponseModel: Codable {
    let message: String
    let success: String
    let messageList: [[String: [MessageList]]]

    enum CodingKeys: String, CodingKey {
        case message, success
        case messageList = "message_list"
    }
}

/// MessageList Model
struct MessageList: Codable {
    let body: String
    let from: String
    let sid: String
    let status: Status
    let dateSent: String
    let dateCreated
    let dateUpdated
    let to: String

    enum CodingKeys: String, CodingKey {
        case body, from, sid, status
        case dateSent = "date_sent"
        case dateCreated = "date_created"
        case dateUpdated = "date_updated"
        case to
    }
}

/// For status field
enum Status: String, Codable {
    case delivered = "delivered"
    case received = "received"
    case sent = "sent"
}
/// YOU MUST CHANGE 'ResponseType' with the real type of response

func messageListAPI(_ completion: @escaping (ResponseType) -> Void) {
    let urlString = "http://yourUrl"
    Alamofire.request(urlString).response { response in
        guard let data = response.data else { return }
        do {
            let decoder = JSONDecoder()
            let response: ResponseType = try decoder.decode(ResponseModel.self, from: data)
            let numberList = response.messageList.compactMap({ $0.keys })
            print("my numberList -> \(numberList)")
            completion(response)

        } catch let error {
            print(error)
            completion(nil)
        }
    }
}
messageListAPI { response in
    /// If response is nil it's means error appear.
    /// Otherwise it is successful
    print(response)
}
guard let yourUrl = URL(string: "https://myUrl") else { return }
URLSession.shared.dataTask(with: yourUrl) { (data, response , error) in      
    guard let data = data else { return }
    do {
    let decoder = JSONDecoder()
    let data = try decoder.decode(ResponseModel.self, from: data)
        print(data)
    } catch let error {
        print("Err", error)
    }
}.resume()
let numberList = ResponseModel.messageList.compactMap({ $0.keys })
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