JeromeJ
Apify & Crawlee•2y ago•
9 replies
Jerome

Output schema

Hi, I'm having 2 issues with output schema definition:
- I can't make 
transformations.unwind
 work, the table only shows 
undefined
 values -> Is there a working example I can check somewhere?
- When instead using 
transformations.flatten
, it seems the table can't show fields with 
array
 or 
object
 format, it shows 
undefined
 instead. Am I missing something here?

For reference, my result is formatted like this, and i want to unwind/flatten the 
data
 part:
[
  {
    "metadata": {
      "timestamp": "2024-07-08T09:51:31.942Z",
      "run_id": "lWmckTaBAlbeKTM33"
    },
    "data": {
      "url": "some_url.com",
      "title": "some title",
      "attributes": ["a", "b"]
    }
  },
  {...}
]

And I'd like the table to show the columns:
- "metadata" as 
object
 (this works)
- "url" as 
link
 (works only when using 
flatten
, not 
unwind
)
- "title" as 
text
 (same)
- "attributes" as 
array
 (shows 
undefined
)

Here is the docs I've been using https://docs.apify.com/platform/actors/development/actor-definition/output-schema
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