Better Strong Params approach

posts_controller.rb

class PostsController < ApplicationController

  # Automatically create the strong parameters required method
  def PostsController.filter_parameters(options = {})
    options[:for] = [options[:for]] if options[:for].is_a?(Symbol)
    options[:for].each do |action_name|
      define_method("#{action_name.to_s}_params") do
        base = options[:require].keys.first
        params.require(base).permit(*options[:require][base])
      end
    end
  end

  # Sample for a filter specification
  filter_parameters for: :create, require: {post: [:body, :title]}

  def new
    @post = Post.new
  end

  # Sample method that uses that automatically created "create_params" method
  def create
    @post = Post.new(create_params)
    @post.save
    redirect_to new_post_url
  end

  

end