Angular - Set headers for every request

Question

I need to set some Authorization headers after the user has logged in, for every subsequent request.

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To set headers for a particular request,

Answer 1

I has able to choose a simplier solution > Add a new Headers to the defaults options merge or load by your api get (or other) function.

get(endpoint: string, params?: any, options?: RequestOptions) {
  if (!options) {
    options = new RequestOptions();
    options.headers = new Headers( { "Accept": "application/json" } ); <<<<
  }
  // [...] 
}

Of course you can externalize this Headers in default options or whatever in your class. This is in the Ionic generated api.ts @Injectable() export class API {}

It is very quick and it work for me. I didn't want json/ld format.