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mastodon/app/models/custom_emoji.rb

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# frozen_string_literal: true
# == Schema Information
#
# Table name: custom_emojis
#
# id :integer not null, primary key
# shortcode :string default(""), not null
# domain :string
# image_file_name :string
# image_content_type :string
# image_file_size :integer
# image_updated_at :datetime
# created_at :datetime not null
# updated_at :datetime not null
#
class CustomEmoji < ApplicationRecord
SHORTCODE_RE_FRAGMENT = '[a-zA-Z0-9_]{2,}'
SCAN_RE = /(?<=[^[:alnum:]:]|\n|^)
:(#{SHORTCODE_RE_FRAGMENT}):
(?=[^[:alnum:]:]|$)/x
has_attached_file :image
validates_attachment :image, content_type: { content_type: 'image/png' }, presence: true, size: { in: 0..50.kilobytes }
validates :shortcode, uniqueness: { scope: :domain }, format: { with: /\A#{SHORTCODE_RE_FRAGMENT}\z/ }, length: { minimum: 2 }
scope :local, -> { where(domain: nil) }
include Remotable
class << self
def from_text(text, domain)
return [] if text.blank?
shortcodes = text.scan(SCAN_RE).map(&:first).uniq
return [] if shortcodes.empty?
where(shortcode: shortcodes, domain: domain)
end
end
end