Michael Schuerig
2010-Aug-26 00:22 UTC
Multiple joins to the same table/association with different conditions
I''m looking for a nice(!) way to specify multiple joins to the same
table where there are different conditions on each one.
I was hoping for something like this
class Model < ActiveRecord::Base
has_many :things
scope :some_things,
joins(:things).where(''things.foo'' =>
''bar'').
joins(:things => :others).where(''others.foo'' =>
''baz'')
end
Unfortunately, this is wishful thinking. As far as I can tell, I have to
write the SQL for the second join explicitly like this
joins(''JOIN things AS others ON models.id =
things.model_id'')
Did I miss a better way?
Michael
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Michael Schuerig
mailto:michael-q5aiKMLteq4b1SvskN2V4Q@public.gmane.org
http://www.schuerig.de/michael/
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