//i wrote a simple django rest framework app that requires a request like this
```python
import requests

token = 'dfacbbd0718c4f152e3914ff70be81f8c9a4c8f5'
headers = {
  'Authorization': 'Token ' + token
}
r = requests.get('http://localhost:8000/backend/api/declarations/',
                 headers=headers)
print(r._content)
```
//then i use angular4 to login and it is succesfull (with CORSE plugin for firefox)

login(username: string, password: string): Observable<boolean> {
    let headers = new Headers({ 'Content-Type': 'application/json'});
    let options = new RequestOptions({ headers: headers });
    return this.http.post('http://localhost:8000/backend/users/login/', JSON.stringify({username: username, password: password}), options)
      .map((response: Response) => {
        console.log(response.json());
        // login successful if there's a jwt token in the response
        let token = response.json() && response.json().token;
        let session_cookie_name = response.json() && response.json().session_cookie_name;
        let session_cookie_key = response.json() && response.json().session_cookie_key;
        let session_cookie_expire = response.json() && response.json().session_cookie_expire;
        let session_cookie_path = response.json() && response.json().session_cookie_path;
        let session_cookie_domain = response.json() && response.json().session_cookie_domain;
        if (token) {
          // set token property
          this.token = token;


          // store username and jwt token in local storage to keep user logged in between page refreshes
          localStorage.setItem('currentUser', JSON.stringify({ username: username, token: token }));

          // return true to indicate successful login

          return true;
        } else {
          // return false to indicate failed login
          return false;
        }
      });
  }


//problem starts when i want to get data using token


import { Component, OnInit } from '@angular/core';
import {DeclarationService} from '../declaration/declaration.service';
import {Declaration} from '../declaration/declaration/declaration';
import {Http, Headers, RequestOptions} from '@angular/http';

@Component({
  selector: 'app-declaration-list',
  templateUrl: './declaration-list.component.html',
  styleUrls: ['./declaration-list.component.css']
})
export class DeclarationListComponent implements OnInit {
  declarations: Declaration[] = [];
  declarationsNegative: Declaration[] = [];
  declarationsPositive: Declaration[] = [];
  // headers: Headers;
  constructor(public declarationService: DeclarationService, public http: Http) { }

  getAuthorizationHeader(): Headers {

    let headers = new Headers({ 'Content-Type': 'application/json' });
    console.log(JSON.parse(localStorage.getItem('currentUser')).token);
    headers.append('Authorization', 'Token dfacbbd0718c4f152e3914ff70be81f8c9a4c8f5');
    let options = new RequestOptions({ headers: headers });
    return headers;
  }

  getDeclarations(): void {
    let headers: Headers;
    headers = this.getAuthorizationHeader();
    let options = new RequestOptions({ headers: headers });
    this.http.get('http://localhost:8000/backend/api/declarations/',
      options)
      .subscribe(response => {
        this.declarations = response.json();
        console.log(this.declarations);
      });
  }
  ngOnInit() {
    this.getDeclarations();
    console.log(this.declarations);

  }

}


//i get this fucking shit
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:8000/backend/api/declarations/. (Reason: CORS preflight channel did not succeed).