Cleaner params

user_controller.rb

class UserController < ApplicationController
  def create
    @user = User.create(UserInput.new(params).create)
  end
  
  def update
    @user = User.find(params[:id].to_i)
    @user.update_attributes(UserInput.new(params).update)
  end
  
  def update_password
    @user = User.find(params[:id].to_i)
    @user.update_attributes(UserInput.new(params).update_password)
  end
end

user_input.rb

class UserInput
  def initialize(p)
    @params = p
  end

  def create
    @params.require(:user).permit([ :name, :email, :password, :password_confirmation ])
  end
  
  def update
    @params.require(:user).permit([ :name, :email ])
  end
  
  def update_password
    @params.require(:user).permit([ :password, :password_confirmation ])
  end
end

:magic: