ruby-on-rails - 如何在 squeel 中动态处理 where 条件？

Question

从这个输入： {'hearing' => 1} 我需要生成这个查询

Score.joins(:target_disability).where{ (target_disabilities.name == 'hearing') & (round(total_score) >= 1) }

从这个输入是 {'hearing' => 1, 'mobility' => 2}，我需要生成这个：

Score.joins(:target_disability).where{ (target_disabilities.name == 'hearing') & (round(total_score) >= 1) | (target_disabilities.name == 'mobility') & (round(total_score) >= 2) }

等等...

这怎么能概括？因为我的输入有时有 3 或 4 个键...有时 1...

Answer 1

假设您的哈希在my_params：

@scores = Score.joins(:target_disability).where do
    my_params.map{|k,v| (target_disabilities.name==k) & (round(total_score)>=v) }.inject(:|)
end