ruby on rails - Sort by date in jsonb postgres -

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i have model data stored in json format in jsonb column in postgres.

i want sort output data field using activerecord query. 

model.all.order("json_data -> 'date'")

gives me output orders alphabetically based on date string.

is there easy way can sort date?

note: dates in following format:

"fri, 24 jun 2016 04:13:26 -0700"

if date in sensible format postgres deal automatically.

model.all.order("(json_data ->> 'date')::timestamp time zone desc")

or

model.all.order("(json_data ->> 'date')::timestamptz desc")

if date field string little unorthodox, can following

model.all.order("to_timestamp(json_data->>'date','dy, dd mon yyyy hh24:mi:ss ') desc")

details here

note ->> there output string rather json object.

you can of course create column , store information there per @uzbekjon's answer below.


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