zentooo

use strict;
use warnings;

use LWP::UserAgent;
use File::Slurp;
use POSIX qw//;

my $ua = LWP::UserAgent->new;

my $resolv_conf_localhost = <<EOF;

zentooo

class Sample2 < ActiveRecord::Base
  validate :check_start_date_and_end_date

  def check_start_date_and_end_date
    if start_date.nil?
      errors.add(:start_date, "start date should not be nil")
    end
    if end_date.nil?
      errors.add(:end_date, "end date should not be nil")
    end

zentooo

    def check_date
      errors.add(:start_date, '開始時刻を入力してください') if start_date.nil?
      errors.add(:end_date, '終了日を入力してください') if end_date.nil?
      return unless errors.empty?

      check_start_date_before_end_date(start_date, end_date)
      check_start_date_and_end_date_gap(start_date, end_date)
    end

    def check_start_date_before_end_date(start_date, end_date)

zentooo

column "campaign name" do |resource|
   c = Campaign.where(id: resource.campaign_id)
   c.first.name if c.exists?
end

zentooo

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