I have a category input. The category group has two levels.

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When accessing the category input via Twig I am trying to only grab sub categories the user selected. However when I use

{% set firstCat = entry.categoryInput.first %}
{% set cats = firstCat.getDescendants() %}

or children it grabs all the descendants from Categories > Group not just from the structure that was selected from the input.

2 Answers 2


You could set the level parameter according to your requirements:

{% set cats = craft.categories({
    relatedTo: {
        sourceElement: entry,
        field: 'categoryInput'
    level: 2,
    limit: null
}) %}
  • Will this work if the input is part of a matrix?
    – a-am
    Oct 28, 2015 at 19:02
  • 1
    You would then need to set field to myMatrixField.myCategoriesField.
    – carlcs
    Oct 28, 2015 at 19:09
  • You pointed me in the correct direction. Using level(2) off of the input works.
    – a-am
    Oct 28, 2015 at 19:13
  • 1
    entry.myCategoriesField is actually just a shortcut for the full craft.categories criteria model I posted. So I'm surprised this solution doesn't work for you.
    – carlcs
    Oct 28, 2015 at 19:22
  • This does work but I figured there should be a quicker way than calling craft.categories. When you wrote "set the level" I thought I would try using level(2) off of the input which worked. As you said it is returning a criteria model, which confused me as to why using getDescendants or children didn't work.
    – a-am
    Oct 28, 2015 at 19:38

@carlcs helped me stumble upon a solution. Using the .level(2) method gave the desired result.

{% set cats = entry.categoryInput.level(2) %}

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