Similar to the "beforesend" functionality in JavaScript, there is a corresponding feature

When attempting to post a comment in my ionic app using the Wordpress api, I encountered error 401 (unauthorized) indicating that the Wordpress api does not recognize me as logged in.

This is the code I am using:

postComment(params?: any) {
let nonce = localStorage.getItem('nonce');
let seq = this.api.post('wp', 'comments', "post="+ params.post+ "&author_name="+params.author_name+"&author="+params.author+"&<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f59480819d9a87aa9098949c99c8988c9098949c99b59298994c99db969a98">[email protected]</a>&content=something").share();
  seq
    .map(res => res.json())
    .subscribe(res => {
    }, err => {
      console.error('ERROR', err);
    });
  return seq;

}

In my investigation, I found that I need to include the nonce in my request. One suggestion is to use jQuery ajax like this:

.ajax( {
   url: wpApiSettings.root + 'wp/v2/posts/1',
   method: 'POST',
   beforeSend: function ( xhr ) {
   xhr.setRequestHeader( 'X-WP-Nonce', wpApiSettings.nonce );
  },
    data:{
      'title' : 'Hello Moon'
  }
   }).done( function ( response ) {
});

I am now wondering how to achieve the same thing in typescript. Specifically, how can I implement the beforeSend function with xhr.setRequestHeader in typescript?

Answer №1

When making a request, the setRequestHeader method allows you to include headers in the request. In Ionic/Angular, this can be achieved by adding a header object to the requestOptions parameters:

let options: RequestOptionsArgs = {};
let newHeaders = new Headers();

newHeaders.append('X-WP-Nonce', nonce);
options.headers = newHeaders;

return this.http.post(fullPath, requestBody, options)
    .map(this.extractData)
    .catch(this.handleError);

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