Getting entries related to current entries categories

Question

Trying to get 10 entries related to the current entry categories excluding a category called featured. I don't have the category name(s) in the url.

This currently what I tried but this does not work, confused about how to do this.

{# Fetch all of the categories related to this entry excluding the featured category#}
{% set categories = craft.categories.relatedTo(entry) %}

{# Output them #}
{% set thecategory = [] %}

{% for category in categories %}
    {% set thecategory = craft.categories.group('resource').slug(category.slug) %}
{% endfor %}

{# Set featured category name to exclude #}
{% set category = craft.categories.group('resource').title('featured') %}
{# Set featured ID's we dont want to show... #}
{% set featuredArticleIds = craft.entries.section('articles').relatedTo(category).ids() %}
{% set featuredArticleIdsString = featuredArticleIds | join(', not ') %}

{% set entries = craft.entries.section(articles).relatedTo('and', thecategory|join(',')).id('and, not '~featuredArticleIdsString).limit(10) %}

Answer 1

This solution should also remove your "featured" category entries:

{% set categories = craft.categories.relatedTo(entry) %}
{% set featuredCategory = craft.categories.slug('featured').first() %}

{% set allIds = [] %}
{% for id in categories.ids() if id != featuredCategory.id %}
    {% set allIds = allIds|merge([id]) %}
{% endfor %}

{% set entries = craft.entries.relatedTo(allIds) %}