Display entries which share tags (2 or more)

Question

I need to be able to display entries (within one section) that share keywords. I don't care what the keywords are, just want to display the entries based on 2 or more shared keywords.

Anyone know how to go about this?

Answer 1

After chatting on Discord a bit more, here's a solution in case it helps somebody:

{# Base query #}
{% set baseQuery = craft
    .entries
    .section('stories')
    .orderBy('RAND()')
    .with(['storyKeywords']) %}

{# Fetch one story at random #}
{% set baseStory = baseQuery.one() %}

Base random story: {{ baseStory.title }}<br>

{# Fetch a second story related to `baseStory` at random #}
{% set relatedStory = clone(baseQuery)
    .relatedTo({
        targetElement: baseStory.storyKeywords,
        field: 'storyKeywords'
    })
    .id('not ' ~ baseStory.id)
    .one() %}

Related Story: {{ relatedStory.title }}<br>

{% set baseKeywords = baseStory.storyKeywords %}
{% set relatedKeywords = relatedStory.storyKeywords %}

<hr>
All tags in common: {{ baseKeywords | filter((tag) => tag.title in relatedKeywords) | join(', ') }} <br>
Number of tags in common: {{ baseKeywords | filter((tag) => tag.title in relatedKeywords) | length }}

Answer 2

You could do the following:

{# Fetch tags from your current entry's tag field #}
{% set tags = entry.tagFieldHandle.ids() %}

{# Query entries related to your tags #}
{% set entries = craft.entries.relatedTo(tags).all() %}