轨如何解析排列的阵列来创建记录

Question

从

a = [1, 2, 3, 4, 5, 6] 

我创建

a.permutation(5).to_a 
=> [[1, 2, 3, 4, 5], [1, 2, 3, 4, 6],....... 

如何可以解析数组数组这样我就可以创建记录指定数组的索引Model.attribute。类似.....

for_each do 
Model.create(n1: 1, n2: 2, n3: 3, n4: 4, n5: 5) 
end 

谢谢！

Answer 1

你可以尝试使用Array#map此：

arrays = a.permutation(5).to_a 

arrays.each do |array| 
    attribs = array.map.with_index { |item, i| ["n#{i + 1}", item] }.to_h 
    Model.create(attribs) 
end