class Admin::ResourceController

def permitted_params
  model_symbols = ActiveRecord::Base.descendants.map { |a| a.name.underscore.to_sym }
  keys = params.keys.map { |k| k.underscore.to_sym }
  valid_symbols = model_symbols & keys
  valid_symbols.each do |symbol|
    params[symbol].permit!
  end
  params
end