Question

人

在控制器中发出以下代码块时，生成的SQL不包含模型的一列/ attr：

dev_total = DeviceTotal.where(time_stamp: @time_stamp).first_or_create {|dt|
    dt.dev_utc = @utc,
    dt.value = @grand_total, 
    dt.production = @net_weight,
    dt.device_id = @device.id,
    dt.var = @device.variable.symbol
}

结果SQL：

INSERT INTO "device_totals" ("created_at", "device_id", "production", "time_stamp",
"updated_at", "value", "var") VALUES ($1, $2, $3, $4, $5, $6, $7) 
RETURNING "id"      [["created_at", Wed, 09 Oct 2013 22:54:04 UTC +00:00],
["device_id", 1], ["production",     80.38], ["time_stamp", Wed, 09 Oct 2013 22:53:59
UTC +00:00], ["updated_at", Wed, 09 Oct     2013 22:54:04 UTC +00:00], ["value",
847.25], ["var", "FRL"]]

可以看出，“dev_utc”列未包含在INSERT命令中。所有其他属性都保存到DB。这是一个BigInt类型列。

其他一切都很好。检查我的代码几十次没有运气。

任何线索？

first_or_create没有保存一列或属性postgresql

0 个答案: