app/models/media_attachment.rb


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class MediaAttachment < ApplicationRecord
  belongs_to :account, inverse_of: :media_attachments
  belongs_to :status,  inverse_of: :media_attachments

  has_attached_file :file
  validates_attachment_content_type :file, content_type: /\Aimage\/.*\z/

  validates :account, presence: true

  def local?
    self.remote_url.blank?
  end
end