Question

is it necessary to mention the private methods in controller as helper_methods in controller?
Like

class PostsController < ApplicationController
  helper_method :check_something

  def new
    check_something
    @post = Post.new
  end

  def show
    @post = Post.find(params[:id])
  end

private

  def check_something
    redirect_to(root_path) and return if something
  end
end

Is the statement : helper_method :check_something required ? if so why ?

And when i call a private method from a controllers action method is the params hash accessible in the private or the helper method ??

Answer 1

No it is not necessary. You can always call private methods of your controller within your controller.

Also, params would be available automatically for the private methods within controller.