将哈希数组转换为csv

Question

我有一系列哈希，如下：

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

我需要将其转换为CSV格式。我意识到我可以使用CSV.generate（我使用ruby 1.9）来生成CSV。

首先使用to_a将哈希变为数组？

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

的输出： 的

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

<强>更新

  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

的输出： 的

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