Filter posts by dynamic array

Developer help
1

For background, im using {{#get}} to fetch one post tagged as #primary-feature and then a second {{#get}} to fetch 4 posts tagged #secondary-feature.

I then want to show 20 latest posts but exclude the 5 that I have already shown on page.

I have nested the {{#get}} blocks so that the two feature calls wrap the “latest posts” call. However,I seem to come unstuck passing the ids into the filter.

Reading elsewhere on this forum, it seems I should be able to use [*]:

{{#get "posts" limit="1" filter="tag:hash-primary_feature" as |primary_posts|}}
  {{#get "posts" limit="4" filter="tag:hash-secondary_feature" as |secondary_posts|}}
    {{#get "posts" limit="20" filter="id:-[{{primary_posts[*].id}}]" as |posts|}}
    {{/get}}
  {{/get}}
{{/get}}

Or even accessing the array by index:

{{#get "posts" limit="1" filter="tag:hash-primary_feature" as |primary_posts|}}
  {{#get "posts" limit="4" filter="tag:hash-secondary_feature" as |secondary_posts|}}
    {{#get "posts" limit="20" filter="id:-[{{primary_posts.0.id}}]" as |posts|}}
    {{/get}}
  {{/get}}
{{/get}}

But neither work. Certainly, the index approach works to output to the page, but not inside the filter it seems.
Is there a way to pass in a dynamic array to the filter attribute?

Error is:

Error: Query Error: unexpected character in filter at char 6
    at Child.applyDefaultAndCustomFilters (/.../versions/5.32.0/node_modules/@tryghost/bookshelf-filter/lib/bookshelf-filter.js:66:23)
(id:-[])+
------^
Expecting 'NULL', 'TRUE', 'FALSE', 'NUMBER', 'NOW', 'LITERAL', 'STRING', got 'RBRACKET'

Using the latest v5.32.0

2

You can use {…/value}} to get the outer value, but I don’t think the filter will take that syntax. The workaround is to pass the {{…/value}} into a partial, which will make it acceptable to the filter.

3

Sorry Cathy, still struggling to get this to work. I have tried passing ids through a partial and still can’t get this to work.

Do you have a simple POC you could share of how this could be achieved?