Incrementing json value of a key in ruby?-CodePudding

I'm looking for a way to increment the values of keys foo and bar

{
  "users": [
    {
      "foo": 6522
    },
    {
      "bar": 20
    }
  ]
}

Here is an example of what I attempted, however the result leaves the values unchanged.

data = JSON.parse(filepath\info.json)

puts data["users"][1].values[0] # 20

data["users"][1].values[0]  = 5

puts data["users"][1].values[0] # remains 20, but expected 25

Is there another way to increment these values?

CodePudding user response：

You'll need to know the key to increment in the user. Since it looks like it's different some times, you can achieve this with 2 eachs

data[:users].each {|u| u.keys.each {|k| u[k]  = 1 } }

Iterate over the users, then iterate over the keys in the user object, adding 1.

This assumes only one key is in users and it's an integer.

values returns a new array so you won't be able to use it that way.

CodePudding user response：

How about:

irb(main):046:1* str = {
irb(main):047:2*   "users": [
irb(main):048:3*     {
irb(main):049:3*       "foo": 6522
irb(main):050:2*     },
irb(main):051:3*     {
irb(main):052:3*       "bar": 20
irb(main):053:2*     }
irb(main):054:1*   ]
irb(main):055:0> }.to_json
=> "{\"users\":[{\"foo\":6522},{\"bar\":20}]}"
irb(main):056:0> json = JSON.parse(str)
=> {"users"=>[{"foo"=>6522}, {"bar"=>20}]}
irb(main):062:0> json['users'][0]['foo']  = 5
=> 6527
irb(main):063:0> json
=> {"users"=>[{"foo"=>6527}, {"bar"=>20}]}