front__codeschool-angular-2/js/controllers/notes-create-controller.js

angular.module("noteWrangler")
  .controller("NoteCreateController", function ($http) {
    const controller = this;

    this.saveNote = function (note) {
      controller.errors = null;
      $http({
        method: "POST",
        url: "/notes.json",
        data: note,
      }).catch(function (note) {
        controller.errors = note.data.error;
      })
        .then(responseHandler, errorHandler);
    };

    const errorHandler = function (err) {
      console.log("Error getting /notes", err);
    };

    const responseHandler = function (data) {
      controller.notes = data.data;
    };

  });

/* Somewhere in templates, to show the error:

<p ng-if="createController.errors">
  {{ createController.errors }}
</p>

 */