75 lines
2.1 KiB
Ruby
75 lines
2.1 KiB
Ruby
module Attachable
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include HasAttachment
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extend ActiveSupport::Concern
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included do
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has_attachment :attachment
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attr_accessor :cached_attachment
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validate :attachment_presence
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validate :validate_attachment_content_type, if: -> { attachment.attached? }
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validate :validate_attachment_size, if: -> { attachment.attached? }
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before_validation :set_attachment_from_cached_attachment, if: -> { cached_attachment.present? }
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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 = attachment.signed_id
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end
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def set_attachment_from_cached_attachment
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self.attachment = cached_attachment
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end
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def attachment_file_name
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attachment.filename.to_s if attachment.attached?
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end
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def attachment_content_type
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attachment.blob.content_type if attachment.attached?
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end
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def attachment_file_size
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if attachment.attached?
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attachment.blob.byte_size
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else
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0
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end
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end
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def file_path
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ActiveStorage::Blob.service.path_for(attachment.blob.key)
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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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unless attachment.attached?
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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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