cumulative sum use field rather then buckets_path

[2qU24Tlb]

in cumulative aggregation, the default key should be buckets_path rather then field

[ferronrsmith]

bodybuilder().aggregation('date_histogram', {
        "field": "date",
        "interval": "month"
    }, 'sales_per_month', agg =>
    agg.aggregation('sum', 'price', 'sales')
    .aggregation('cumulative_sum', {
        buckets_path: 'sales'
    }, 'cumulative_sales')
).build()

maps to =>

{
    "size": 0,
    "aggs" : {
        "sales_per_month" : {
            "date_histogram" : {
                "field" : "date",
                "interval" : "month"
            },
            "aggs": {
                "sales": {
                    "sum": {
                        "field": "price"
                    }
                },
                "cumulative_sales": {
                    "cumulative_sum": {
                        "buckets_path": "sales" 
                    }
                }
            }
        }
    }
}

[danpaz]

@unioah You should be able to override the default key by passing an object as the second argument to bodybuilder.aggregation. For example:

bodybuilder()
  .aggregation('cumulative_sum', { buckets_path: 'the_sum' }, 'name_me')
  .build()

[ferronrsmith]

Added the example from the documentation page above.