Summarize node: Support previous node data fields in "Fields to split by"

Feature Requests
1

The idea is:

The “summarize” node should support using data of previous nodes as expression in “Fields to Split By” field.
Currently I only get an error: this.getNodeParameter(...).split is not a function

My “Summarize” node configuration is:

  • Fields to Summarize:
    • 1
      • Aggregation: Append
      • Field: html
  • Fields to Split By: {{$(‘datasource’).item.json.paygroup}}

My use case:

I generate HTML from data, and then want to group those HTMLs into buckets by a field in their original data.

Example data:

[
  {
    "name": "Mike",
    "position": "Manager",
    "paygroup": 2
  },
  {
    "name": "Waldo",
    "position": "Worker",
    "paygroup": 1
  },
  {
    "name": "Bob",
    "position": "Beggar",
    "paygroup": 1
  }
]

With a “HTML” node I combine name + position, and in the end I want to group the HTML by their paygroup

[  
  {
    "paygroup": 2,
    "appended_html": [
      "Mike (Manager)"
    ]
  },
  {
    "paygroup": 1,
    "appended_html": [
      "Waldo (Worker)",
      "Bob (Beggar)"
    ]
  }
]

I think it would be beneficial to add this because:

It would make workflows shorter (and faster), because I wouldn’t have to put a “Merge” node before the Summarize node. (Mode: combine, Combine by: Position)

Any resources to support this?

Are you willing to work on this?

No.