DumasNodes

DumasNodes is a ComfyUI custom-node pack for generic utility workflows under the Dumas brand.

Included Nodes

• Dumas JSON String to Object

  • Input: json_string
  • Output: parsed JSON
  • Use it to turn raw JSON text into a structured object.

• Dumas JSON Object to String

  • Inputs: json_object, pretty, sort_keys
  • Output: serialized STRING
  • Use it to compact or pretty-print JSON for prompts, logs, or file output.

• Dumas JSON Get Value

  • Inputs: json_object, path
  • Output: JSON
  • Reads a nested value using dot paths like user.profile.name or items.0.id.

• Dumas JSON Set Value

  • Inputs: json_object, path, value_json
  • Output: updated JSON
  • Writes a parsed JSON value into a nested path without mutating the original object.

• Dumas JSON Merge Objects

  • Inputs: base_object, overlay_object
  • Output: merged JSON
  • Deep-merges dictionaries so overlay values replace or extend the base object.

• Dumas JSON Keys

  • Input: json_object
  • Outputs: keys as JSON array, count as integer
  • Lists the top-level keys of an object and reports how many there are.

• Dumas JSON Array Length

  • Input: json_array
  • Output: INT
  • Returns the length of a JSON array.

• Dumas JSON Array Iterator

  • Inputs: json_input, index, mode
  • Outputs: item, current_index, total_items
  • Returns the current array item and position, with mode set to fixed, incr, or decr.

• Dumas JSON Object Iterator

  • Inputs: json_input, index, mode
  • Outputs: key, value, current_index, total_items
  • Returns the current object entry in insertion order, with mode set to fixed, incr, or decr.

All nodes live in the Dumas/JSON category.

Installation

1. Change into your ComfyUI custom nodes directory:

   cd /path/to/ComfyUI/custom_nodes
   

2. Clone this repository:

   git clone https://git.dumas.ddns.net/chris.dumas/DumasNodes.git
   

3. Restart ComfyUI.

Usage

Use dot paths for nested access:

user.profile.name
items.0.id
settings.render.width

Dumas JSON Set Value expects value_json to be valid JSON, so strings should be quoted:

"Dumas"

{"enabled": true, "retries": 3}

Dumas JSON Array Iterator clamps to valid bounds:

fixed -> use index as-is
incr  -> use index + 1
decr  -> use index - 1

Dumas JSON Object Iterator uses the same index rules and iterates object entries in their existing key order.

Roadmap

This repo is intended to grow into a broader set of Dumas-branded generic utility nodes, including JSON helpers and adjacent data-manipulation tools.

License

MIT.