simple proof of concept

usage:

  $('form').rparam()


examples:

  <input name="entity[attribute_1]" value="first" />
  <input name="entity[attribute_2]" value="second" />
  <input name="entity[attribute_3]" value="third" />

  *becomes*

  {
    entity: {
      attribute_1: 'first',
      attribute_2: 'second',
      attribute_3: 'third'
    }
  }

  ----


  <input name="entity[attribute_1][]" value="first" />
  <input name="entity[attribute_1][]" value="second" />
  <input name="entity[attribute_1][]" value="third" />

  *becomes*

  {
    entity: {
      attribute_1: [
        'first',
        'second',
        'third'
      ]
    }
  }

  ----


  <input name="entity[another_entity_attributes][][attribute_1]" value="1st first" />
  <input name="entity[another_entity_attributes][][attribute_2]" value="1st second" />
  <input name="entity[another_entity_attributes][][attribute_3]" value="1st third" />
  <input name="entity[another_entity_attributes][][attribute_1]" value="2nd first" />
  <input name="entity[another_entity_attributes][][attribute_2]" value="2nd second" />
  <input name="entity[another_entity_attributes][][attribute_3]" value="2nd third" />
  <input name="entity[another_entity_attributes][][attribute_1]" value="3rd first" />
  <input name="entity[another_entity_attributes][][attribute_2]" value="3rd second" />
  <input name="entity[another_entity_attributes][][attribute_3]" value="3rd third" />

  *becomes*

  {
    entity: {
      another_entity_attributes: [
        {
          attribute_1: '1st first',
          attribute_2: '1st second',
          attribute_3: '1st third'
        },
        {
          attribute_1: '2nd first',
          attribute_2: '2nd second',
          attribute_3: '2nd third'
        },
        {
          attribute_1: '3rd first',
          attribute_2: '3rd second',
          attribute_3: '3rd third'
        }
      ]
    }
  }

  ----


  <input name="entity[another_entity_attributes][][attribute_1]" value="1st first" />
  <input name="entity[another_entity_attributes][][attribute_1]" value="2nd first" />
  <input name="entity[another_entity_attributes][][attribute_2]" value="2nd second" />
  
  *becomes*

  {
    entity: {
      another_entity_attributes: [
        {
          attribute_1: '1st first',
          attribute_2: '2nd second',
        },
        {
          attribute_1: '2nd first'
        }
      ]
    }
  }