从hash快速生成URL参数

key_values = {
 :key1 => "value1",
 :key2 => "value2"
}
key_values.map{|entry| entry * '='} * '&' #key1=value1&key2=value2

评论

4 楼 Hooopo 2010-12-31  

Hooopo 写道

Rack自带的utils里有个parse nested query方法，很强大～

>> Rack::Utils.parse_nested_query("a[]=1&a[]=2&b[c]=3&b[d]=4")
=> {"a"=>["1", "2"], "b"=>{"c"=>"3", "d"=>"4"}}

还可以build query和build nested query：
>> Rack::Utils.build_nested_query(:a => ["1", "2"], :b => {:c => "3"})
=> "a[]=1&a[]=2&b[c]=3"

3 楼 Hooopo 2010-12-31  

Rack自带的utils里有个parse nested query方法，很强大～

>> Rack::Utils.parse_nested_query("a[]=1&a[]=2&b[c]=3&b[d]=4")
=> {"a"=>["1", "2"], "b"=>{"c"=>"3", "d"=>"4"}}

2 楼 fuliang 2010-12-31  

Hooopo 写道

url参数生成hash...

>> query = "key1=value1&key2=value2"
=> "key1=value1&key2=value2"
>> Hash[query.split("&").map{|pair| pair.split("=")}]
=> {"key1"=>"value1", "key2"=>"value2"}
>> 

很好的补充

1 楼 Hooopo 2010-12-31  

url参数生成hash...

>> query = "key1=value1&key2=value2"
=> "key1=value1&key2=value2"
>> Hash[query.split("&").map{|pair| pair.split("=")}]
=> {"key1"=>"value1", "key2"=>"value2"}
>>