Rails 控制台 - 分组依据计数并显示引用的列值

Question

我有 2 个模型，Bug (id, status_id) 和 Status(id, desc)

我怎样才能得到像这样的输出 bug_status_desc、bug_count

输出应该是

{NEW=>1, REOPEN=>2}

这是我试过的。

Bug.group(:status).count

结果是

(0.8ms)  SELECT COUNT(*) AS count_all, status_id AS status_id FROM `bugs` GROUP BY `bugs`.`status_id`  ORDER BY created_at DESC
Status Load (0.4ms)  SELECT `statuses`.* FROM `statuses` WHERE `statuses`.`id` IN (1, 3)
=> 
{#<Status:0x007fb210991370 id: 1, desc: "NEW">=>1,
#<Status:0x007fb210991118 id: 3, desc: "REOPEN">=>2}

Answer 1

尝试

Bug.joins(:status).group('statuses.desc').count

（假设你在模型中有对应关系）

Rails 控制台 - 分组依据计数并显示引用的列值

Rails Console - Group By count and display referenced column value

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