validates image with active storage

validates image with active storage

validate :acceptable_image

def acceptable_image
  return unless main_image.attached?
end

def acceptable_image
  return unless main_image.attached?

  unless main_image.byte_size <= 1.megabyte
    errors.add(:main_image, "is too big")
  end
end

def acceptable_image
  return unless main_image.attached?

  unless main_image.byte_size <= 1.megabyte
    errors.add(:main_image, "is too big")
  end

  acceptable_types = ["image/jpeg", "image/png"]
  unless acceptable_types.include?(main_image.content_type)
    errors.add(:main_image, "must be a JPEG or PNG")
  end
end