112 lines
2.8 KiB
Ruby
112 lines
2.8 KiB
Ruby
class PostVersion < ActiveRecord::Base
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belongs_to :post
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belongs_to :updater, :class_name => "User"
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before_validation :initialize_updater
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module SearchMethods
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def for_user(user_id)
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where("updater_id = ?", user_id)
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end
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def updater_name(name)
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where("updater_id = (select _.id from users _ where lower(_.name) = ?)", name.mb_chars.downcase)
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end
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def search(params)
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q = scoped
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params = {} if params.blank?
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if params[:updater_name].present?
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q = q.updater_name(params[:updater_name])
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end
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if params[:updater_id].present?
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q = q.where("updater_id = ?", params[:updater_id].to_i)
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end
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if params[:post_id].present?
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q = q.where("post_id = ?", params[:post_id].to_i)
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end
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q
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end
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end
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extend SearchMethods
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def self.create_from_post(post)
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if post.created_at == post.updated_at
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create_from_created_post(post)
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else
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create_from_updated_post(post)
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end
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end
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def initialize_updater
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self.updater_id = CurrentUser.id
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self.updater_ip_addr = CurrentUser.ip_addr
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end
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def tag_array
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@tag_array ||= tags.scan(/\S+/)
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end
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def presenter
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PostVersionPresenter.new(self)
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end
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def reload
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@tag_array = nil
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super
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end
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def sequence_for_post
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versions = PostVersion.where(:post_id => post_id).order("updated_at desc").all
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diffs = []
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versions.each_index do |i|
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if i < versions.size - 1
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diffs << versions[i].diff(versions[i + 1])
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end
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end
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return diffs
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end
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def diff(version)
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latest_tags = post.tag_array
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latest_tags << "rating:#{post.rating}" if post.rating.present?
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latest_tags << "parent:#{post.parent_id}" if post.parent_id.present?
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latest_tags << "source:#{post.source}" if post.source.present?
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new_tags = tag_array
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new_tags << "rating:#{rating}" if rating.present?
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new_tags << "parent:#{parent_id}" if parent_id.present?
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new_tags << "source:#{source}" if source.present?
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old_tags = version.present? ? version.tag_array : []
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if version.present?
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old_tags << "rating:#{version.rating}" if version.rating.present?
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old_tags << "parent:#{version.parent_id}" if version.parent_id.present?
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old_tags << "source:#{version.source}" if version.source.present?
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end
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added_tags = new_tags - old_tags
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removed_tags = old_tags - new_tags
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return {
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:added_tags => added_tags & latest_tags,
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:removed_tags => removed_tags - latest_tags,
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:obsolete_added_tags => added_tags - latest_tags,
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:obsolete_removed_tags => removed_tags & latest_tags,
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:unchanged_tags => new_tags & old_tags,
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}
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end
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def previous
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PostVersion.where("post_id = ? and updated_at < ?", post_id, updated_at).order("updated_at desc").first
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end
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def truncated_source
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source.gsub(/^http:\/\//, "").sub(/\/.+/, "")
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end
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end
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