Find layers by querying groupCategories through Portal

Question

Hi,  I would like to query our portal for group items by category.

After loading the portal and finding the group by id, I am giving the group to this function as group0:

const getLayers = async (group0: any) => {
  let queryParams = {
    query: `categories: ["/Categories/CDC Social Vulnerability Index/Theme 1: Socio-economic"]`,
  }
  const { results } = await group0.queryItems(queryParams )
  return results
}

I have tried several iterations of this search string.  If I am only searching one category level (/Categories/ALICE Households), it works , but if I go into a nested category (like Theme 1 here), it returns all of the layers in the group.

I have tried categories: and groupCategories:, with curly braces, with brackets, with no braces, just a string, with quotes and without.  Has anyone had any success fetching layers that have been categorized in a portal group in a nested category schema?

With gratitude,

Michelle

LaurenBoyd · Accepted Answer

Hi @MichelleStuart -

Instead of using the query property, have you tried using the PortalQueryParams categories property? This takes a string or an array of strings that can be formatted like so:

let queryParams = {
  categories: [
    ["/Categories/Trending/New and noteworthy", "/Categories/Basemaps/Reference maps/Test category"]
  ]
};

If attempting to get items in a subcategory, be sure to add those category folders the to full path.

Here's an example CodePen that queries two different categories that contain sub categories: https://codepen.io/laurenb14/pen/wvOYvWv?editors=1000

Hope this helps!