잘 작동하는 모델 중 하나에 명명 된 범위가 있습니다. 코드는 다음과 같습니다PostreSQL과 명명 된 범위의 MySQL
named_scope :inbox_threads, lambda { |user|
{
:include => [:deletion_flags, :recipiences],
:conditions => ["recipiences.user_id = ? AND deletion_flags.user_id IS NULL", user.id],
:group => "msg_threads.id"
}}
이 MySQL 데이터베이스와 응용 프로그램 내 로컬 복사본에 잘 작동하지만 나는 (단지 PostgreSQL을 사용) Heroku가 내 응용 프로그램을 누를 때, 나는 다음과 같은 오류 얻을 :
을 내가 포스트 그레스의 작업과 마찬가지로 익숙하지 않다ActiveRecord::StatementInvalid (PGError: ERROR: column "msg_threads.subject" must appear in the GROUP BY clause or be used in an aggregate function:
SELECT "msg_threads"."id" AS t0_r0, "msg_threads"."subject" AS t0_r1, "msg_threads"."originator_id" AS t0_r2, "msg_thr eads"."created_at" AS t0_r3, "msg_threads"."updated_at" AS t0_r4, "msg_threads"."url_key" AS t0_r5, "deletion_flags"."id" AS t1_r0, "deletion_flags"."user_id" AS t1_r1, "deletion_flags"."msg_thread_id" AS t1_r2, "deletion_flags"."confirmed" AS t1_r3, "deletion_flags"."created_at" AS t1_r4, "deletion_flags"."updated_at" AS t1_r5, "recipiences"."id" AS t2_r0, "recipiences"."user_id" AS t2_r1, "recipiences"."msg_thread_id" AS t2_r2, "recipiences"."created_at" AS t2_r3, "recipien ces"."updated_at" AS t2_r4 FROM "msg_threads" LEFT OUTER JOIN "deletion_flags" ON deletion_flags.msg_thread_id = msg_threads.id LEFT OUTER JOIN "recipiences" ON recipiences.msg_thread_id = msg_threads.id WHERE (recipiences.user_id = 1 AND deletion_flags.user_id IS NULL) GROUP BY msg_threads.id)
, 그래서 내가이 작업을 얻기 위해 여기에 추가해야? 감사!