40 lines
901 B
Ruby
40 lines
901 B
Ruby
class PrimaryGroupLookup
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def initialize(user_ids = [])
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@user_ids = user_ids.tap(&:compact!).tap(&:uniq!).tap(&:flatten!)
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end
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# Lookup primary group for a given user id
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def [](user_id)
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users[user_id]
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end
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private
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def self.lookup_columns
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@lookup_columns ||= %i{id name flair_url flair_bg_color flair_color}
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end
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def users
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@users ||= user_lookup_hash
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end
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def user_lookup_hash
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users_with_primary_group = User.where(id: @user_ids)
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.where.not(primary_group_id: nil)
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.select(:id, :primary_group_id)
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group_lookup = {}
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group_ids = users_with_primary_group.map(&:primary_group_id)
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group_ids.uniq!
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Group.where(id: group_ids).select(self.class.lookup_columns)
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.each { |g| group_lookup[g.id] = g }
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hash = {}
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users_with_primary_group.each do |u|
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hash[u.id] = group_lookup[u.primary_group_id]
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end
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hash
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end
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end
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