Have a problem JSON and Hash

Rails
1

Hi everybody.

I have using ActiveSupport::JSON library in rails

I have a json string:
test= {“C1”:{“id”:“C1”,“mode”:“new”,“type”:“block”,“name”:“new block
C1”,“unit”:"",“choices”:[],“index”:10},“R1”:{“id”:“R1”,“mode”:“new”,“type”:“text”,“name”:“new
question
R1”,“unit”:"",“choices”:[""],“index”:20},“R2”:{“id”:“R2”,“mode”:“new”,“type”:“text”,“name”:“new
question
R2”,“unit”:"",“choices”:[""],“index”:30},“R3”:{“id”:“R3”,“mode”:“new”,“type”:“text”,“name”:“new
question
R3”,“unit”:"",“choices”:[""],“index”:40},“C2”:{“id”:“C2”,“mode”:“new”,“type”:“block”,“name”:“new
block
C2”,“unit”:"",“choices”:[],“index”:50},“R4”:{“id”:“R4”,“mode”:“new”,“type”:“text”,“name”:“new
question
R4”,“unit”:"",“choices”:[""],“index”:60},“C3”:{“id”:“C3”,“mode”:“new”,“type”:“block”,“name”:“new
block C3”,“unit”:"",“choices”:[],“index”:70}}

when i using:

temp = ActiveSupport::JSON
result = temp.decode(test)

and I recieve: Result is not sort the same as param “test” i had before.

result =“R2choicesnamenew question
R2modenewunittypetextidR2index30R3choicesnamenew question
R3modenewunittypetextidR3index40R4choicesnamenew question
R4modenewunittypetextidR4index60C1choicesnamenew block
C1modenewunittypeblockidC1index10C2choicesnamenew block
C2modenewunittypeblockidC2index50C3choicesnamenew block
C3modenewunittypeblockidC3index70R1choicesnamenew question
R1modenewunittypetextidR1index20”

I dont understand it.
Please tell me a solution.
Thanks for help.

2

On Jul 30, 3:54 am, Vuong H. [email protected] wrote:

R2",“unit”:“”,“choices”:[“”],“index”:30},“R3”:{“id”:“R3”,“mode”:“new”,“type “:“text”,“name”:“new
question
R3”,“unit”:””,“choices”:[“”],“index”:40},“C2”:{“id”:“C2”,“mode”:“new”,“type “:“block”,“name”:“new
block
C2”,“unit”:””,“choices”:[],“index”:50},“R4”:{“id”:“R4”,“mode”:“new”,“type”: “text”,“name”:“new
question
R4”,“unit”:“”,“choices”:[“”],“index”:60},“C3”:{“id”:“C3”,“mode”:“new”,“type “:“block”,“name”:“new
block C3”,“unit”:””,“choices”:[],“index”:70}}

That is not a string, but trying to assign a new hash to test. I’ll
assume that the you just posted test= to define your problem.

when i using:

temp = ActiveSupport::JSON
result = temp.decode(test)

The call to decode will create a hash From ruby-doc.org:

“A Hash is a collection of key-value pairs. It is similar to an Array,
except that indexing is done via arbitrary keys of any object type,
not an integer index. The order in which you traverse a hash by either
key or value may seem arbitrary, and will generally not be in the
insertion order.”

result = result.sort

<%= result.inspect %>

Seems to sort your hash by the keys. If input order is what you are
looking for, not sure how to help without modifying your keys
(prepending an index).

Steve A.