Updated has_and_belongs_to_many association to fix :finder_sql interpolation. [#848 state:resolved]

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

activerecord/lib/active_record/associations/association_proxy.rb

@@ -131,10 +131,6 @@ def quoted_record_ids(records)
           records.map { |record| record.quoted_id }.join(',')
         end
 
-        def interpolate_sql_options!(options, *keys)
-          keys.each { |key| options[key] &&= interpolate_sql(options[key]) }
-        end
-
         def interpolate_sql(sql, record = nil)
           @owner.send(:interpolate_sql, sql, record)
         end

activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb

@@ -70,10 +70,8 @@ def delete_records(records)
         end
 
         def construct_sql
-          interpolate_sql_options!(@reflection.options, :finder_sql)
-
           if @reflection.options[:finder_sql]
-            @finder_sql = @reflection.options[:finder_sql]
+            @finder_sql = interpolate_sql(@reflection.options[:finder_sql])
           else
             @finder_sql = "#{@owner.connection.quote_table_name @reflection.options[:join_table]}.#{@reflection.primary_key_name} = #{owner_quoted_id} "
             @finder_sql << " AND (#{conditions})" if conditions

activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb

@@ -450,6 +450,13 @@ def test_find_in_association_with_custom_finder_sql
     assert_equal developers(:david), active_record.developers_with_finder_sql.find(developers(:david).id), "Ruby find"
   end
 
+  def test_find_in_association_with_custom_finder_sql_and_multiple_interpolations
+    # interpolate once:
+    assert_equal [developers(:david), developers(:poor_jamis), developers(:jamis)], projects(:active_record).developers_with_finder_sql, "first interpolation"
+    # interpolate again, for a different project id
+    assert_equal [developers(:david)], projects(:action_controller).developers_with_finder_sql, "second interpolation"
+  end
+
   def test_find_in_association_with_custom_finder_sql_and_string_id
     assert_equal developers(:david), projects(:active_record).developers_with_finder_sql.find(developers(:david).id.to_s), "SQL find"
   end