job.rb

class Job < ApplicationRecord
  belongs_to :user
  validates :title, presence: true
  validates :wage_upper_bound, presence: true, numericality: {greater_than: 0}
  validates :wage_lower_bound, presence: true, numericality: {greater_than: 0}
  # validates :wage_lower_bound, numericality: {greater_than: 0}

  scope :show_public, -> { where("is_hidden = 'false'") } # :is_hidden => false
  scope :recent, -> { order(created_at: :desc) }

  def open!
    self.is_hidden = false
    self.save
  end

  def close!
    self.is_hidden = true
    self.save
  end

end

user.rb

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  has_many :jobs


  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  def admin?
    is_admin
  end
end