70 lines
1.8 KiB
Ruby
70 lines
1.8 KiB
Ruby
class Libraries::SaveService < ApplicationService
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Error = Class.new(StandardError)
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attr_reader :library, :user, :params
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def initialize(library, user, params)
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@library = library
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@user = user
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@params = params
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end
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def call
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Libraries::SaveForm.new(params).validate!
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if library.new_record?
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library.user_id = user.id
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library.generate_uuid
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end
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ActiveRecord::Base.transaction do
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library.assign_attributes(library_params)
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library.save!
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deal_library_tag!
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deal_attachments!
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Libraries::SubmitService.call(library) if with_publish?
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end
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library
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rescue Libraries::SubmitService::Error => ex
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raise Error, ex.message
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end
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private
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def deal_library_tag!
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new_tag_ids = LibraryTag.where(id: Array.wrap(params[:tag_ids]).compact).pluck(:id)
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old_tag_ids = library.library_library_tags.pluck(:library_tag_id)
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# 删除标签
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destroy_ids = old_tag_ids - new_tag_ids
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library.library_library_tags.where(library_tag_id: destroy_ids).delete_all
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# 创建标签
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created_ids = new_tag_ids - old_tag_ids
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created_ids.each do |id|
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library.library_library_tags.create!(library_tag_id: id)
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end
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end
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def deal_attachments!
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attachment_ids = Array.wrap(params[:attachment_ids]).compact.map(&:to_i)
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old_attachment_id = library.attachments.pluck(:id)
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destroy_ids = old_attachment_id - attachment_ids
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library.attachments.where(id: destroy_ids).delete_all
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Attachment.where(id: attachment_ids, author_id: user.id).update_all(container_type: library.class.to_s, container_id: library.id)
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end
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def library_params
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params.slice(*%i[title content author_name author_school_name cover_id])
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end
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def with_publish?
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params[:publish].to_s == 'true'
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end
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end
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