Module: Hoardable::ArelVisitors

Defined in:
lib/hoardable/arel_visitors.rb

Overview

This is a monkey patch of JOIN related Arel::Visitors for PostgreSQL so that they can append the ONLY clause when known to be operating on a Model. Ideally, Arel itself would provide a mechanism to support this keyword.

Instance Method Summary collapse

Instance Method Details

#visit_Arel_Nodes_FullOuterJoin(o, collector) ⇒ Object 



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# File 'lib/hoardable/arel_visitors.rb', line 6

def visit_Arel_Nodes_FullOuterJoin(o, collector)
  collector << "FULL OUTER JOIN "
  hoardable_maybe_add_only(o, collector)
  collector = visit o.left, collector
  collector << " "
  visit o.right, collector
end

#visit_Arel_Nodes_InnerJoin(o, collector) ⇒ Object 



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# File 'lib/hoardable/arel_visitors.rb', line 30

def visit_Arel_Nodes_InnerJoin(o, collector)
  collector << "INNER JOIN "
  hoardable_maybe_add_only(o, collector)
  collector = visit o.left, collector
  if o.right
    collector << " "
    visit(o.right, collector)
  else
    collector
  end
end

#visit_Arel_Nodes_OuterJoin(o, collector) ⇒ Object 



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# File 'lib/hoardable/arel_visitors.rb', line 14

def visit_Arel_Nodes_OuterJoin(o, collector)
  collector << "LEFT OUTER JOIN "
  hoardable_maybe_add_only(o, collector)
  collector = visit o.left, collector
  collector << " "
  visit o.right, collector
end

#visit_Arel_Nodes_RightOuterJoin(o, collector) ⇒ Object 



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# File 'lib/hoardable/arel_visitors.rb', line 22

def visit_Arel_Nodes_RightOuterJoin(o, collector)
  collector << "RIGHT OUTER JOIN "
  hoardable_maybe_add_only(o, collector)
  collector = visit o.left, collector
  collector << " "
  visit o.right, collector
end