The type 'Request' cannot be assigned to the parameter type 'HttpRequest<any>'

Question

The type 'Request' cannot be assigned to the parameter type 'HttpRequest<any>'

Hello, I'm new here and I'm hoping for some help in simple terms.

I encountered an error in my method sendRequest() while working with the following typescript code...

The error message says: 'Argument of type 'Request' is not assignable to parameter of type 'HttpRequest'. Property 'body' is missing in type 'Request'.

I have attached an image (https://i.sstatic.net/oIP4v.png) of the error message. If anyone knows how to resolve this, please let me know. I couldn't find any solutions on Google.

import { Movie } from "./movie.model";
import { Injectable } from '@angular/core';
import { RequestMethod, Request, Response } from '@angular/http';
import { HttpClient } from '@angular/common/http';
import { Observable } from "rxjs/Observable";
import "rxjs/add/operator/map";
import { Filter } from "./configClasses.repository";
import { Studio } from "./studio.model";

const studiosUrl = "/api/studios";
const moviesUrl = "/api/movies";

@Injectable()
export class Repository {
    private filterObject = new Filter();
    private movieData: Movie;

    constructor(private http: HttpClient) {
        //this.filter.category = "drama";
        this.filter.related = true;
        this.getMovies(true);
    }

    getMovie(id: number) {
        this.sendRequest(RequestMethod.Get, moviesUrl + "/" + id)
            .subscribe(response => { this.movie = response.json(); });
        //console.log("Movie Data Requested");
    }

    getMovies(related = false) {
        let url = moviesUrl + "?related=" + this.filter.related;
        if (this.filter.category) {
            url += "&category=" + this.filter.category;
        }
        if (this.filter.search) {
            url += "&search=" + this.filter.search;
        }
        this.sendRequest(RequestMethod.Get, url)
            .subscribe(response => this.movies = response);
    }

    getStudios() {
        this.sendRequest(RequestMethod.Get, studiosUrl)
            .subscribe(response => this.studios = response);
    }
    createMovie(mov: Movie) {
        let data = {
            name: mov.name, category: mov.category,
            description: mov.description, price: mov.price,
            studio: mov.studio ? mov.studio.studioId : 0
        };
        this.sendRequest(RequestMethod.Post, moviesUrl, data)
            .subscribe(response => {
                mov.movieId = response;
                this.movies.push(mov);
            });
    }
    createMovieAndStudio(mov: Movie, stu: Studio) {
        let data = {
            name: stu.name, city: stu.city, state: stu.state
        };
        this.sendRequest(RequestMethod.Post, studiosUrl, data)
            .subscribe(response => {
                stu.studioId = response;
                mov.studio = stu;
                this.studios.push(stu);
                if (mov != null) {
                    this.createMovie(mov);
                }
            });
    }

    replaceMovie(mov: Movie) {
        let data = {
            name: mov.name, category: mov.category,
            description: mov.description, price: mov.price,
            studio: mov.studio ? mov.studio.studioId : 0
        };
        this.sendRequest(RequestMethod.Put, moviesUrl + "/" + mov.movieId, data)
            .subscribe(response => this.getMovies());
    }
    replaceStudio(stu: Studio) {
        let data = {
            name: stu.name, city: stu.city, state: stu.state
        };
        this.sendRequest(RequestMethod.Put,
            studiosUrl + "/" + stu.studioId, data)
            .subscribe(response => this.getMovies());
    }

    private sendRequest(verb: RequestMethod, url: string,
        data?: any): Observable<any> {
        return this.http.request(new Request({
            method: verb, 
            url: url, 
            body: data
        })).map(response => {
            return response.headers.get("Content-Length") != "0"
                ? response.json() : null;
        });
    }

    updateMovie(id: number, changes: Map<string, any>) {
        let patch = [];
        changes.forEach((value, key) =>
            patch.push({ op: "replace", path: key, value: value }));
        this.sendRequest(RequestMethod.Patch, moviesUrl + "/" + id, patch)
            .subscribe(response => this.getMovies());
    }

    movie: Movie;
    movies: Movie[];
    studios: Studio[] = [];

    get filter(): Filter {
        return this.filterObject;
    }

    deleteMovie(id: number) {
        this.sendRequest(RequestMethod.Delete, moviesUrl + "/" + id)
            .subscribe(response => this.getMovies());
    }
    deleteStudio(id: number) {
        this.sendRequest(RequestMethod.Delete, studiosUrl + "/" + id)
            .subscribe(response => {
                this.getMovies();
                this.getStudios();
            });
    }
}

angular typescript

Answer 1

Answer №1

Here is a working example:

function makeRequest(type: string, endpoint: string,
    payload?: any): Observable<Response> {
    return this.http.request(new Request({
        method: type,
        url: endpoint,
        body: payload
    })).map(res => {
        return res.headers.get("Content-Length") !== "0"
            ? res.json() : null;
    });
}

Answer 2

Here is a working example:

function makeRequest(type: string, endpoint: string,
    payload?: any): Observable<Response> {
    return this.http.request(new Request({
        method: type,
        url: endpoint,
        body: payload
    })).map(res => {
        return res.headers.get("Content-Length") !== "0"
            ? res.json() : null;
    });
}

Answer 3

Answer №2

To include "Http" in your '@angular/http' module, you can do so in the following way (However, this method is now considered deprecated):

import { RequestMethod, Http, Request, Response } from '@angular/http';

Instead of importing { HttpClient } from '@angular/common/http';

Update your constructor as follows:

constructor(private http: Http) {
    //this.filter.category = "drama";
    this.filter.related = true;
    this.getMovies(true);
}

For more information, refer to: Angular.io -> api -> http -> Request

Alternatively, if you want to use the non-deprecated method:

... constructor(private http: HttpClient) ...

  public get<T>(url: string, headers: object) {
    return this.http.get<T>(url, headers);
  }


  public post<T>(url: string, body: any, headers: object) {
    return this.http.post<T>(url, body, headers);
  }

Answer 4

To include "Http" in your '@angular/http' module, you can do so in the following way (However, this method is now considered deprecated):

import { RequestMethod, Http, Request, Response } from '@angular/http';

Instead of importing { HttpClient } from '@angular/common/http';

Update your constructor as follows:

constructor(private http: Http) {
    //this.filter.category = "drama";
    this.filter.related = true;
    this.getMovies(true);
}

For more information, refer to: Angular.io -> api -> http -> Request

Alternatively, if you want to use the non-deprecated method:

... constructor(private http: HttpClient) ...

  public get<T>(url: string, headers: object) {
    return this.http.get<T>(url, headers);
  }


  public post<T>(url: string, body: any, headers: object) {
    return this.http.post<T>(url, body, headers);
  }

Answer 5

Answer №3

To tackle this issue, there are two approaches you can take. One option is to create specific methods for handling GET and POST requests, as mentioned by Vancho. Alternatively, you can use the following code to get started:

private sendRequest(verb: RequestMethod, url: string,
    data?: any): Observable<any> {

    let method: string;

    switch (verb) {
        case RequestMethod.Get:
            method = "GET";
            break;
        case RequestMethod.Post:
            method = "POST";
            break;
    }

    return this.http.request(method, url, { body: data }).map(response => {
        return response.headers.get("Content-Length") != "0"
            ? response.json() : null;
    });
}

However, I advise against this approach as it may not be scalable in the long run. It is recommended to have separate methods for GET, POST, and DELETE requests. In this case, you can create specific methods like sendGetRequest and sendPostRequest, which will utilize http.get and http.post respectively.

Answer 6

To tackle this issue, there are two approaches you can take. One option is to create specific methods for handling GET and POST requests, as mentioned by Vancho. Alternatively, you can use the following code to get started:

private sendRequest(verb: RequestMethod, url: string,
    data?: any): Observable<any> {

    let method: string;

    switch (verb) {
        case RequestMethod.Get:
            method = "GET";
            break;
        case RequestMethod.Post:
            method = "POST";
            break;
    }

    return this.http.request(method, url, { body: data }).map(response => {
        return response.headers.get("Content-Length") != "0"
            ? response.json() : null;
    });
}

However, I advise against this approach as it may not be scalable in the long run. It is recommended to have separate methods for GET, POST, and DELETE requests. In this case, you can create specific methods like sendGetRequest and sendPostRequest, which will utilize http.get and http.post respectively.

The type 'Request' cannot be assigned to the parameter type 'HttpRequest<any>'

Answer №1

Answer №2

Answer №3

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