gitlab-org--gitlab-foss/app/models/application_setting.rb

# == Schema Information
#
# Table name: application_settings
#
#  id                           :integer        not null, primary key
#  default_projects_limit       :integer
#  default_branch_protection    :integer
#  signup_enabled               :boolean
#  signin_enabled               :boolean
#  gravatar_enabled             :boolean
#  twitter_sharing_enabled      :boolean
#  sign_in_text                 :text
#  created_at                   :datetime
#  updated_at                   :datetime
#  home_page_url                :string(255)
#  default_branch_protection    :integer          default(2)
#  twitter_sharing_enabled      :boolean          default(TRUE)
#  restricted_visibility_levels :text
#

class ApplicationSetting < ActiveRecord::Base
  serialize :restricted_visibility_levels

  validates :home_page_url,
    allow_blank: true,
    format: { with: URI::regexp(%w(http https)), message: "should be a valid url" },
    if: :home_page_url_column_exist

  validates_each :restricted_visibility_levels do |record, attr, value|
    value.each do |level|
      unless Gitlab::VisibilityLevel.options.has_value?(level)
        record.errors.add(attr, "'#{level}' is not a valid visibility level")
      end
    end
  end

  def self.current
    ApplicationSetting.last
  end

  def self.create_from_defaults
    create(
      default_projects_limit: Settings.gitlab['default_projects_limit'],
      default_branch_protection: Settings.gitlab['default_branch_protection'],
      signup_enabled: Settings.gitlab['signup_enabled'],
      signin_enabled: Settings.gitlab['signin_enabled'],
      twitter_sharing_enabled: Settings.gitlab['twitter_sharing_enabled'],
      gravatar_enabled: Settings.gravatar['enabled'],
      sign_in_text: Settings.extra['sign_in_text'],
      restricted_visibility_levels: Settings.gitlab['restricted_visibility_levels']
    )
  end

  def home_page_url_column_exist
    ActiveRecord::Base.connection.column_exists?(:application_settings, :home_page_url)
  end
end