hi , all
under rails 2.0
aotianlong@aotianlong:~/workspace/killer$ ruby script/console
Loading development environment (Rails 2.0.1)>> {:user=>"aotianlong"}.to_json
=> "{\"user\":
\"aotianlong\"}">> user = User.find :first
=> #<User id: 1, uname: "aotianlong">>> user.to_json
=> "{\"attributes\": {\"id\":1,\"uname\":
\"aotianlong\"}}">> {:user=>user}.to_json
ArgumentError: wrong number of arguments (1 for 0)
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoding.rb:22:in
`to_json''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoding.rb:22:in
`send''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoding.rb:22:in
`encode''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoding.rb:32:in
`raise_on_circular_reference''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoding.rb:21:in
`encode''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoders/hash.rb:45:in
`to_json''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoders/hash.rb:44:in
`map''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoders/hash.rb:44:in
`to_json''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/core_ext/object/misc.rb:28:in
`returning''
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/active_support/json/encoders/hash.rb:43:in
`to_json''
from (irb):4>>
how let {:user=>user}.to_json work correct?
thanks for reply.
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