How do I convert a Hash to a JSON string in Ruby 1.9?
ruby-1.9.2-p0 > require 'json'
=> true
ruby-1.9.2-p0 > hash = {hi: "sup", yo: "hey"}
=> {:hi=>"sup", :yo=>"hey"}
ruby-1.9.2-p0 > hash.to_json
=> "{\"hi\":\"sup\",\"yo\":\"hey\"}"
ruby-1.9.2-p0 > j hash
{"hi":"sup","yo":"hey"}
=> nil
j hash
puts the answer I want but returns nil
.
hash.to_json
returns the answer I w开发者_如何学Goant with backslashes. I don't want backslashes.
That's just because of String#inspect
. There are no backslashes. Try:
hjs = hash.to_json
puts hjs
You're on the right track. to_json
converts it to JSON format. Don't let the IRB output fool you -- it doesn't contain any backslashes.
Try this:
puts hash.to_json
and you should see this:
{"hi":"sup","yo":"hey"}
I don't have Ruby1.9 to test, but apparently you are getting the "inspect" view. Those backslashes are not there, they are just escaping the quotes. Run puts hash.to_json
to check.
精彩评论