retrospring/app/controllers/ajax/report_controller.rb

class Ajax::ReportController < ApplicationController
  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
    @status = :parameter_error
    @message = I18n.t('messages.parameter_error', parameter: param_miss_ex.param.capitalize)
    @success = false
    render partial: "ajax/shared/status"
  end
  
  def create
    params.require :id
    params.require :type

    @status = :err
    @success = false

    if current_user.nil?
      @message = I18n.t('messages.report.create.login')
      return
    end

    unless %w(answer comment question user).include? params[:type]
      @message = I18n.t('messages.report.create.unknown')
      return
    end

    object = if params[:type] == 'user'
               User.find_by_screen_name params[:id]
             else
               params[:type].strip.capitalize.constantize.find params[:id]
             end

    if object.nil?
      @message = I18n.t('messages.report.create.not_found', parameter: params[:type])
      return
    end

    current_user.report object, params[:reason]

    @status = :okay
    @message = I18n.t('messages.report.create.okay', parameter: params[:type])
    @success = true
  end
end