Save hash in the csv ruby -

i have hash:

users = { 'name' => name,         'last_name' => last_name,         'photo' => photo,         'address' => address, } 

save in csv:

csv.open("users.csv", "a") {|csv| users.to_a.each {|elem| csv << elem}} 

output:

 name, jake  last_name,kallen photo, http://avs.ru/leto_3434.jpg address, new york name, dan  last_name,leans photo, http://avs.ru/leto_3423.jpg address, new york 

i need file:

jake,kallen,http://avs.ru/leto_3434.jpg,new york 

how change code need? me please.

upd: forgot point out lot of users

csv.open("users.csv", "a") {|csv|   csv << users.values } 

i think, need this. if users hash contains other data - csv take to