Make object flatt paramObject.subParamObject.subSubSubParam - paramObject_subParamObject_subSubSubParam

flatObject.coffee

convertFlatObject = (objectToFlat)->
    flatObject = {}

    convertValue = (flatObject, key, value)->
        if value isnt null and value isnt undefined
            if typeof value is "string" or typeof value is "number"
                flatObject[key] = value
            else if typeof value is "object"
                flatSubObject = convertFlatObject value
                for subObjectKey, subObjectValue of flatSubObject
                    flatObject["#{key}_#{subObjectKey}"] = subObjectValue
            else if typeof value is "array"
                arrayToFlat = value
                for arrayToFlatValue, arrayToFlatIndex in arrayToFlat
                    convertValue flatObject, "#{key}_#{arrayToFlatIndex}", arrayToFlatValue

    for key, value of objectToFlat
        convertValue flatObject, key, value

    flatObject


console.log convertFlatObject 
  currentParam  : 0
  sub1          : subParam : subSubParam : 1
  sub2          : subParam : 2
  sub3_arr      : [
                    ["subArr00", "subArr01"], 
                    "arr1", 
                    2
                    ["subArr10", [ "subsubArr110"]]
                  ]
 
 
 ###
 
currentParam: 0
sub1_subParam_subSubParam: 1
sub2_subParam: 2
sub3_arr_0_0: "subArr00"
sub3_arr_0_1: "subArr01"
sub3_arr_1: "arr1"
sub3_arr_2: 2
sub3_arr_3_0: "subArr10"
sub3_arr_3_1_0: "subsubArr110"
 
 ###