我正在尝试过滤和重新排序哈希数组。过滤器和顺序由另一个字符串数组定义,这些字符串表示散列的"slug"
键的值。生成的数组应仅包含散列,其"slug"
键的值包含在slugs数组中,并以相同的顺序排序。如果我有第一个数组:
data = [
{
"slug" => "lemon",
"label" => "Lemon Label"
},
{
"slug" => "table",
"label" => "Table Label"
},
{
"slug" => "peach",
"label" => "Peach Label"
},
{
"slug" => "strawberry",
"label" => "Strawberry Label"
},
{
"slug" => "bread",
"label" => "Bread Label"
},
{
"slug" => "orange",
"label" => "Orange Label"
}
]
,第二个数组为:
ordered_keys = ["orange", "lemon", "strawberry"]
然后,结果应该是这样的数组:
result = [
{
"slug" => "orange",
"label" => "Orange Label"
},
{
"slug" => "lemon",
"label" => "Lemon Label"
},
{
"slug" => "strawberry",
"label" => "Strawberry Label"
}
]
我设法得到了过滤功能:
result = data.select{|x| ordered_keys.include? x.slug}
但我找不到一种聪明的方法来获得有序的。有什么想法吗?
答案 0 :(得分:11)
使用map
将您的有序键数组转换为相应的哈希值。输入数组到map
的顺序定义了输出数组的顺序。
ordered_keys.map{|k| data.find{|h| h["slug"] == k}}