Question

I am overriding to_json.

When I call to_json on my model I get the following:

{ "integer1": "23", "integer2": "2", "integer3": "4", ... }

I want to_json to return:

{ "Something": "23", "SomethingElse": "2", "AnotherThing": "4", ... }

I have an array that contains the key and its mapping:

"integer1" => "Something", "integer2" => "SomethingElse", "integer3" => "AnotherThing", ....

How can I achieve this?

Answer 1

1. Convert your model instance into a hash

2. Convert the hash into what you want:

   h1 = { "integer1" => "23", "integer2" => "2", "integer3" => "4" }
   h2 = { "integer1" => "Something", "integer2" => "SomethingElse", "integer3" => "AnotherThing" }
   desired = Hash[ h1.map{ |k,v| [ h2[k], v ] } ]
   

3. Get your JSON from that:

   json = desired.to_json