76 lines
2.5 KiB
Ruby
76 lines
2.5 KiB
Ruby
module Attachable
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extend ActiveSupport::Concern
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included do
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attr_accessor :cached_attachment
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# Disable paperclip security validation due to polymorphic configuration
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# Paperclip do not allow to use Procs on valiations definition
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do_not_validate_attachment_file_type :attachment
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validate :attachment_presence
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validate :validate_attachment_content_type, if: -> { attachment.present? }
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validate :validate_attachment_size, if: -> { attachment.present? }
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before_save :set_attachment_from_cached_attachment, if: -> { cached_attachment.present? }
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Paperclip.interpolates :prefix do |attachment, style|
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attachment.instance.prefix(attachment, style)
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end
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end
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def association_class
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type = send("#{association_name}_type")
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type.constantize if type.present?
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end
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def set_cached_attachment_from_attachment
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self.cached_attachment = if Paperclip::Attachment.default_options[:storage] == :filesystem
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attachment.path
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else
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attachment.url
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end
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end
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def set_attachment_from_cached_attachment
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self.attachment = if Paperclip::Attachment.default_options[:storage] == :filesystem
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File.open(cached_attachment)
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else
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URI.parse(cached_attachment)
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end
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end
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def prefix(attachment, _style)
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if attachment.instance.persisted?
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":attachment/:id_partition"
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else
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"cached_attachments/user/#{attachment.instance.user_id}"
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end
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end
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private
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def validate_attachment_size
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if association_class && attachment_file_size > max_file_size.megabytes
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errors.add(:attachment, I18n.t("#{model_name.plural}.errors.messages.in_between",
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min: "0 Bytes",
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max: "#{max_file_size} MB"))
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end
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end
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def validate_attachment_content_type
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if association_class && !accepted_content_types.include?(attachment_content_type)
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message = I18n.t("#{model_name.plural}.errors.messages.wrong_content_type",
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content_type: attachment_content_type,
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accepted_content_types: self.class.humanized_accepted_content_types)
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errors.add(:attachment, message)
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end
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end
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def attachment_presence
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if attachment.blank? && cached_attachment.blank?
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errors.add(:attachment, I18n.t("errors.messages.blank"))
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end
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end
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end
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