Display posts when both tags exists

Developer help
1

Hi! in ghost we can filter posts by multiple tags

{{#get "posts" include="tags,authors" filter="tags:[tag1, tag2]"}}
   ---
{{/get}}

but here I want to filter and display when both tags exists in that post…
Is it possible to filter by that way…?

2

Would it not work if you did something like the following?

{{#get "posts" include="tags,authors"}}
    {{#has tag="tag1"}}
        {{#has tag="tag2"}}
            ---
        {{/has}}
    {{/has}}
{{/get}}
3

The filtering should also let you do it with filter=“tag:tag1+tag:tag2”