79 lines
2.2 KiB
Ruby
79 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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class PostRevision < ActiveRecord::Base
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belongs_to :post
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belongs_to :user
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serialize :modifications, Hash
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after_create :create_notification
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def self.ensure_consistency!
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# 1 - fix the numbers
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DB.exec <<-SQL
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UPDATE post_revisions
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SET number = pr.rank
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FROM (SELECT id, 1 + ROW_NUMBER() OVER (PARTITION BY post_id ORDER BY number, created_at, updated_at) AS rank FROM post_revisions) AS pr
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WHERE post_revisions.id = pr.id
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AND post_revisions.number <> pr.rank
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SQL
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# 2 - fix the versions on the posts
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DB.exec <<-SQL
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UPDATE posts
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SET version = 1 + (SELECT COUNT(*) FROM post_revisions WHERE post_id = posts.id),
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public_version = 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')
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WHERE version <> 1 + (SELECT COUNT(*) FROM post_revisions WHERE post_id = posts.id)
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OR public_version <> 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')
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SQL
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end
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def categories
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return [] if modifications["category_id"].blank?
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@categories ||= Category.with_parents(modifications["category_id"])
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end
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def hide!
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update_column(:hidden, true)
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end
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def show!
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update_column(:hidden, false)
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end
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def create_notification
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PostActionNotifier.after_create_post_revision(self)
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end
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def self.copy(original_post, target_post)
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cols_to_copy = (column_names - %w[id post_id]).join(", ")
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DB.exec <<~SQL
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INSERT INTO post_revisions(post_id, #{cols_to_copy})
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SELECT #{target_post.id}, #{cols_to_copy}
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FROM post_revisions
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WHERE post_id = #{original_post.id}
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SQL
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end
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end
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# == Schema Information
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#
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# Table name: post_revisions
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#
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# id :integer not null, primary key
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# user_id :integer
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# post_id :integer
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# modifications :text
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# number :integer
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# created_at :datetime not null
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# updated_at :datetime not null
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# hidden :boolean default(FALSE), not null
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#
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# Indexes
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#
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# index_post_revisions_on_post_id (post_id)
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# index_post_revisions_on_post_id_and_number (post_id,number)
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# index_post_revisions_on_user_id (user_id)
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