Angular2 enable/disable formcontrol on http response not working

Source: https://stackoverflow.com/questions/40080951/angular2-enable-disable-formcontrol-on-http-response-not-working
You can do something like this:
yourHttpFunction(){
 if(controlShouldBeDisabled){
  this.form.controls['first'].disable()
 }

}


<select type="number" [attr.disabled]="controlEnabled"></select>
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