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427d54b2b0
Zeitwerk simplifies working with dependencies in dev and makes it easier reloading class chains. We no longer need to use Rails "require_dependency" anywhere and instead can just use standard Ruby patterns to require files. This is a far reaching change and we expect some followups here.
102 lines
2.4 KiB
Ruby
102 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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# This is used in topic lists
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class TopicPostersSummary
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# localization is fast, but this allows us to avoid
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# calling it in a loop which adds up
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def self.translations
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{
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original_poster: I18n.t(:original_poster),
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most_recent_poster: I18n.t(:most_recent_poster),
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frequent_poster: I18n.t(:frequent_poster)
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}
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end
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attr_reader :topic, :options
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def initialize(topic, options = {})
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@topic = topic
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@options = options
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@translations = options[:translations] || TopicPostersSummary.translations
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end
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def summary
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sorted_top_posters.compact.map(&method(:new_topic_poster_for))
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end
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private
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def new_topic_poster_for(user)
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topic_poster = TopicPoster.new
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topic_poster.user = user
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topic_poster.description = descriptions_for(user)
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topic_poster.primary_group = primary_group_lookup[user.id]
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if topic.last_post_user_id == user.id
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topic_poster.extras = +'latest'
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topic_poster.extras << ' single' if user_ids.uniq.size == 1
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end
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topic_poster
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end
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def descriptions_by_id
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@descriptions_by_id ||= begin
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result = {}
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ids = user_ids
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if id = ids.shift
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result[id] ||= []
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result[id] << @translations[:original_poster]
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end
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if id = ids.shift
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result[id] ||= []
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result[id] << @translations[:most_recent_poster]
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end
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while id = ids.shift
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result[id] ||= []
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result[id] << @translations[:frequent_poster]
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end
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result
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end
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end
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def descriptions_for(user)
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descriptions_by_id[user.id].join ', '
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end
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def shuffle_last_poster_to_back_in(summary)
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unless last_poster_is_topic_creator?
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summary.reject! { |u| u.id == topic.last_post_user_id }
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summary << avatar_lookup[topic.last_post_user_id]
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end
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summary
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end
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def last_poster_is_topic_creator?
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topic.user_id == topic.last_post_user_id
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end
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def sorted_top_posters
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shuffle_last_poster_to_back_in top_posters
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end
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def top_posters
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user_ids.map { |id| avatar_lookup[id] }.compact.uniq.take(5)
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end
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def user_ids
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[ topic.user_id, topic.last_post_user_id, *topic.featured_user_ids ]
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end
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def avatar_lookup
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@avatar_lookup ||= options[:avatar_lookup] || AvatarLookup.new(user_ids)
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end
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def primary_group_lookup
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@primary_group_lookup ||= options[:primary_group_lookup] || PrimaryGroupLookup.new(user_ids)
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end
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end
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