class ResourceController < ApplicationController
  def index
    resource = params[:ids].present? ? resource_name.where(id: params[:ids]) : resource_name.all
    render json: resource
  end

  def show
    render json: resource_name.find(params[:id])
  end

  def create
    resource = resource_name.new(resource_params)

    if resource.save
      render json: resource
    else
      render json: resource, status: :unprocessable_entity
    end
  end

  def update
    resource = resource_name.find(params[:id])

    if resource.update(resource_params)
      render json: resource
    else
      render json: resource, status: :unprocessable_entity
    end
  end

  def destroy
    resource = resource_name.find(params[:id])
    resource.destroy
    render json: {}
  end

private

  def resource_name
    @resource_name ||= params[:controller].split('/').last.classify.constantize
  end

  def resource_params
    raise "Please override the resource_params method in your controller class '#{(params[:controller])}'"
  end
end