Question

我有一个链式查询，它生成我需要的确切查询，但我无法访问任何模型对象中的一个键列。示例链如下：

Organization.select("bt.total_points total_points").
    includes(:current_summary).
    eager_load(:location).
    joins("JOIN #{Benefit.select("SUM(nen_score) as total_points, benefits.organization_id").
       group(:organization_id).as("bt").to_sql} ON bt.organization_id= organizations.id")

此处组织与福利模型有一对多关系，一对一与位置，... 请注意，根据用户选择的内容，此链将进一步向下附加条款和订单条件。

我尝试在返回的对象上使用 read_attribute total_points ，但我找不到任何对象中的列。

根据要求生成的查询（为了简洁起见，我删除了很多列）

SELECT  bt.total_points as total_points, 
        "organizations"."id" AS t0_r0,
        "organizations"."name" AS t0_r1,
        "organizations"."primary_role" AS t0_r5,
        "organizations"."founded_on" AS t0_r10,
        "organizations"."created_at" AS t0_r11,
        "organizations"."updated_at" AS t0_r12,
        "organizations"."city" AS t0_r13, 
        "organizations"."industry_id" AS t0_r15,
        "organizations"."location_id" AS t0_r16,
        "organizations"."summary_id" AS t0_r17,
        "locations"."id" AS t1_r0, 
        "locations"."name" AS t1_r1,
        "locations"."parent_id" AS t1_r2,
        "locations"."path" AS t1_r3,
        "locations"."created_at" AS t1_r4,
        "locations"."updated_at" AS t1_r5, 
        "organization_performance_snapshots"."id" AS t2_r0,
        "organization_performance_snapshots"."organization_id" AS t2_r1,
        "organization_performance_snapshots"."valid_from" AS t2_r2, 
        "organization_performance_snapshots"."valid_till" AS t2_r3,   
        "organization_performance_snapshots"."period" AS t2_r4,  
        "organization_performance_snapshots"."revenue" AS t2_r7, 
        "organization_performance_snapshots"."profit_after_tax" AS t2_r9, 
        "organization_performance_snapshots"."total_debt" AS t2_r11, 
        "organization_performance_snapshots"."created_at" AS t2_r14,  
        "organization_performance_snapshots"."updated_at" AS t2_r15 
FROM "organizations" 
LEFT OUTER JOIN "locations" ON "locations"."id" = "organizations"."location_id" 
LEFT OUTER JOIN "organization_performance_snapshots" ON "organization_performance_snapshots"."organization_id" = "organizations"."id" AND (valid_till IS NULL) 
JOIN (SELECT SUM(nen_score) as total_points, benefits.organization_id 
    FROM "benefits" 
    GROUP BY "benefits"."organization_id") bt 
  ON bt.organization_id= organizations.id  
ORDER BY "organizations"."id" DESC

如何从模型对象中访问select查询中的别名列

0 个答案: