哈希值的数组转换为csv

Question

我有散列的数组，像这样：

[{:id => 1, :name => "test", :status => "active", :desc => "test desc"}, {...}] 

我需要把它变成一个CSV文件。我意识到我可以使用CSV.generate（我使用ruby 1.9）来生成CSV。

将to_a的哈希变成数组的第一个想法会是一个想法吗？

Answer 1

arr = [{:id => 1, :name => "test", :status => "active", :desc => "test desc"},{:x => 4,:l => 7}] 
arr = arr.each_with_object([]) { |i,mem| mem << i.to_a }.flatten 
p arr 

输出：

[:id, 1, :name, "test", :status, "active", :desc, "test desc", :x, 4, :l, 7] 

UPDATE：

require 'csv' 
    arr = [{:id => 1, :name => "test", :status => "active", :desc => "test desc"},{:x => 4,:l => 7}] 
    arr = arr.each_with_object([]) { |i,mem| mem << i.to_a}.flatten.to_csv 
    p arr 

输出：

"id,1,name,test,status,active,desc,test desc,x,4,l,7\n"