Allow multiple root keys or nested data (not necessarily nested models)

[danvideo]

Maybe there's a better way to handle this, but right now it seems a root key that's multiple levels down is inaccessible. See this example json:

{
  "code": 0,
  "message": "success",
  "data": {
    "monitors": [{
      "name": "TYPE_ONE",
      "status": 1
    },{
      "name": "TYPE_TWO",
      "status": 1
    }],
    "monitor_groups": [{
      "status": 1,
      "monitors": [{
        "name": "DIFFERENT_TYPE",
        "status": 1
      }]
    }]
  }
}

For example if the values after doc["data"]["monitors"] are required (e.g. an array of TYPE_ONE and TYPE_TWO objects) this statement won't find the correct key
root_key plural: "monitors", singular: "monitors", scopes: [:read] The ability to set another level of root keys such as the following would be great: root_key_1 plural: "data", singular: "data", scopes: [:read] root_key_2 plural: "monitors", singular: "monitor", scopes: [:read] Alternatively to have the root key be able to start multiple levels into the json (although then there might be problems with similarly named keys)

[driv3r]

you can have a separate mapping class for monitors, and you can wrap the response within separate one depending on your business logic, i.e.

class Data
  attr_accessor :monitors, :monitor_groups
end

class Monitor
  attr_accessor :name, :status
end

class MonitorGroup
  attr_accessor :status, :monitors
end

class MonitorMapping
  include Kartograph::DSL

  kartograp do
    root_key singular: "monitor", plural: "monitors", scopes: [:read]
    mapping Monitor
    property "name", scopes: [:read]
    property "status", scopes: [:read]
  end
end

class ScreensMapping # ofc. you should pick better name ;)
  include Kartograph::DSL

  kartograp do
    root_key singular: "data", plural: "data", scopes: [:read]
    mapping Data
    property :monitors, plural: true, include: MonitorMapping

    property :monitor_groups, plural: true, scopes: [:read] do
      mapping MonitorGroup
      property :status, scopes: [:read]
      property :monitors, plural: true, scopes: [:read], include: MonitorMapping
    end
  end
end