Use OUTPUT_IS_LIST=True for Get JSON Field with multiple_results=True

[geroldmeisinger]

(see original discussion here: https://www.reddit.com/r/comfyui/comments/1pd1n96/comment/nskb7hs/)

If HTTP Get JSON Field: multiple_results=True on an array the output value is a array-like string ["cat", "dog", "rat"] which doesn't integrate well with ComfyUI. However, for lists ComfyUI provides the custom node property OUTPUT_IS_LIST=(True,) which make the downstream nodes process the items sequentially. Here I had to manually prepare the string to make it work, by removing the tokens [ ] " and then separate the string into an output list.

If you want to know more about output lists see: https://github.com/geroldmeisinger/ComfyUI-outputlists-combiner

[wawahuy]

• I think we should create a new node (HTTPJSONToList) whose purpose is to convert a JSON array into a real Python list, so ComfyUI can process it using OUTPUT_IS_LIST.
  This new node would simply take a JSON string like ["a","b","c"] and output an actual list, allowing downstream nodes to iterate through each item without manually removing [ ] " and splitting the string.

• Regarding multiple_results:
  its current role is only to collect all matched JSONPath results and return them as a JSON array string.
  It does not return a real Python list, so ComfyUI cannot recognize it as a list and cannot loop through each item.
  Therefore, multiple_results only helps “fetch multiple values”, but it does not support sequential item processing in a workflow.

[geroldmeisinger]

I made one here now:
https://github.com/geroldmeisinger/ComfyUI-outputlists-combiner/blob/560af081a2404d35af00208a6d03991ac6684d47/src/outputlists_combiner/nodes.py#L101