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2011 Nov 03
0
Arel table aliases and ActiveRecord::Relation help: how to specify "multiple has_many items in a query"
What is the recommended way to use table aliases with
ActiveRecord::Relation these days?
In prior versions of Rails, this would work:
assume (pseudo code):
model A
has_many b''s
model B
,,,
at = B.arel_table
atalias = at.alias(at.name + "_1")
A.join(:b).join(atalias).where(atalias[:a_id].eq(at[:a_id]).where("b.widget
= ''foo''").where("b_1.widget = ''bar''"). ...
^ probably should be "on"
now in 3.1.1: pas...