How can i convert string to array of object json in Rails-CodePudding

i just create a migration like this

def change
    add_column :articles, : information, :json,
               default: '[{ "type:c":"12", "temperature":12 }]', null: false
end

i just migrated that table

right now, to create a new article, i am sending this in my request with postman, i am sending properly the 'information' as string?

{
     "section":"139",
     "information":"[{ type:c, temperature:9 }]" //string
 }

so far every thing is ok

now i want to get the param information as a array not string

I want to convert information in an array of json object, how can i do that?

CodePudding user response：

This can be achieved in two ways.

require 'yaml'

input_params = {"section":"139","information":"[{ type: c, temperature: 9 }]"}
#=> {"section"=>"139", "information"=>"[{ type: c, temperature: 9 }]"}

YAML.load(input_params['information'])
#=> [{"type"=>"c", "temperature"=>9}]

or If you want to use JSON.parse then input_params should be as below:

require 'json' 

input_params = {"section"=> "139", "information" =>'[{ "type":"c", "temperature":"9" }]'}
#=> {"section"=>"139", "information"=>"[{ \"type\":\"c\", \"temperature\":\"9\" }]"}

JSON.parse(input_params['information'])
#=> [{"type"=>"c", "temperature"=>9}]

I hope this will help you