mastodon/app/models/custom_emoji.rb
Eugen Rochko 81cec35dbf Custom emoji (#4988)
* Custom emoji

- In OStatus: `<link rel="emoji" name="coolcat" href="http://..." />`
- In ActivityPub: `{ type: "Emoji", name: ":coolcat:", href: "http://..." }`
- In REST API: Status object includes `emojis` array (`shortcode`, `url`)
- Domain blocks with reject media stop emojis
- Emoji file up to 50KB
- Web UI handles custom emojis
- Static pages render custom emojis as `<img />` tags

Side effects:

- Undo #4500 optimization, as I needed to modify it to restore
  shortcode handling in emojify()
- Formatter#plaintext should now make sure stripped out line-breaks
  and paragraphs are replaced with newlines

* Fix emoji at the start not being converted
2017-09-19 02:42:40 +02:00

39 lines
1.1 KiB
Ruby

# 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 }
include Remotable
class << self
def from_text(text, domain)
return [] if text.blank?
shortcodes = text.scan(SCAN_RE).map(&:first)
where(shortcode: shortcodes, domain: domain)
end
end
end