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How to identify item_selector for Migrate API JSON imports

Trying to import articles from an external JSON feed of “members” with a structure like this: 

{
   "status":"OK",
   "results":[
      {
         "num_results": 10,
         "offset": 0,
         "articles": [
              {
                 "id": "1",
                 "title": "First article",
...

And I haven’t been able to isolate the correct values to use for item_selector to get it to point to the array of “articles”:

source:
  plugin: url
  data_fetcher_plugin: http
  data_parser_plugin: json
  urls: http://example.com/eample.json
  item_selector: /results/members/

The error I continually get in the console is:

[error] Could not retrieve source count from import_your node: Passed
variable is not an array or object

Would be grateful for an explanation of exactly how item_selector is defined or a pointer to documentation for the same.

This article was republished from its original source.
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How to identify item_selector for Migrate API JSON imports

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