mastodon/app/validators/follow_limit_validator.rb

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# frozen_string_literal: true
class FollowLimitValidator < ActiveModel::Validator
LIMIT = ENV.fetch('MAX_FOLLOWS_THRESHOLD', 7_500).to_i
RATIO = ENV.fetch('MAX_FOLLOWS_RATIO', 1.1).to_f
def validate(follow)
return if follow.account.nil? || !follow.account.local?
follow.errors.add(:base, I18n.t('users.follow_limit_reached', limit: self.class.limit_for_account(follow.account))) if limit_reached?(follow.account)
end
class << self
def limit_for_account(account)
if account.following_count < LIMIT
LIMIT
else
[(account.followers_count * RATIO).round, LIMIT].max
end
end
end
private
def limit_reached?(account)
account.following_count >= self.class.limit_for_account(account)
end
end