has_and_belongs_to_many:developers_with_finder_sql,:class_name=>"Developer",:finder_sql=>'SELECT t.*, j.* FROM developers_projects j, developers t WHERE t.id = j.developer_id AND j.project_id = #{id}'
has_and_belongs_to_many:developers_by_sql,:class_name=>"Developer",:delete_sql=>"DELETE FROM developers_projects WHERE project_id = \#{id} AND developer_id = \#{record.id}"