如何在吱吱声中动态处理where条件？

Question

从此输入：{'hear'=＆gt; 1}我需要生成此查询

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

从这个输入是{'hear'=＆gt; 1，'mobility'=＆gt; 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......

如何概括？因为我的输入有时会有3或4个键...有时候1 ...

Answer 1

假设您的哈希值在my_params：

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