module BatchActions

# File lib/batch_actions.rb, line 32
def self.included(base)
  base.extend ClassMethods

  if defined?(InheritedResources::Base) &&
     base < InheritedResources::Base
    base.batch_model base.resource_class
  end
end

# File lib/batch_actions.rb, line 5
def batch_actions
  return [] unless self.class.instance_variable_defined? :@batch_actions

  actions = self.class.instance_variable_get :@batch_actions
  allowed = []

  actions.each do |keyword, condition|
    if instance_exec(&condition)
      allowed << keyword
    end
  end

  allowed
end

# File lib/batch_actions.rb, line 20
def dispatch_batch
  name = params[:batch_action]

  allowed = batch_actions.detect { |action| action.to_s == name.to_s }
  unless allowed
    raise ActionController::RoutingError.new('batch action is not allowed')
  end

  self.status, headers, self.response_body = self.class.action(:"batch_#{name}").call(env)
  self.headers.merge! headers
end