使用include时where子句中的未知列错误

Question

我有这个问题：

includes(:foo).where(foo: { price: 0 })

我是从名为Recipe的课程中调用它。

Foo的小数类型列price：

>> Recipe.first.foo
=> #<Foo id: 1, price: #<BigDecimal:928b000,'0.0',9(18)>, slug: "something", created_at: "2017-12-05 07:54:29", updated_at: "2017-12-05 13:00:51">

我收到此错误：

  

Mysql2 ::错误：未知栏＆＃39; foo.price＆＃39;在＆＃39; where子句＆＃39;：SELECT recipes。id AS t0_r0，recipes。foo_id AS t0_r1，recipes。{{1} } AS t0_r2，parent_recipe_id。recipes AS t0_r3，name。recipes AS t0_r4，description。quantities AS t0_r5，{{1} }。slug AS t0_r6，recipes。created_at AS t0_r7，quantities。updated_at AS t1_r0，foos。id AS t1_r1，foos。category_id AS t1_r2，foos。price AS t1_r3，foos。slug AS t1_r4，foos。 created_at AS t1_r5 FROM foos LEFT OUTER JOIN updated_at ON recipes。foos = foos。id WHERE {{1} }。recipes = 0.0

为什么这不起作用？我正在使用其他查询，这些查询都完美无缺。

Answer 1

您应该在foo:子句中将foos:（您的关联名称）替换为where（您的表名）。

includes(:foo).where(foos: { price: 0 })