Use join instead of subquery on Label.unprioritized scope

parent 4c924107
......@@ -39,7 +39,14 @@ class Label < ActiveRecord::Base
end
def self.unprioritized(project)
where.not(id: prioritized(project).select(:id))
labels = Label.arel_table
priorities = LabelPriority.arel_table
label_priorities = labels.join(priorities, Arel::Nodes::OuterJoin).
on(labels[:id].eq(priorities[:label_id]).and(priorities[:project_id].eq(project.id))).
join_sources
joins(label_priorities).where(priorities[:priority].eq(nil))
end
def self.left_join_priorities
......
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