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I'm trying to use two taxonomy items to build a button on my template. The logic is:

If this node is exactly equal to taxonomyTermFromVocabularyA
Print a button on the page with a URL built out of taxonomyTermFromVocabularyB

I thought I was doing well when a simple test proved that my terms were available. In the template, I tested by adding:

<h3>{{ content.field_taxonomy_resource_type }}</h3>
<h3>{{ content.field_taxonomy_topic }}</h3>

And out came the expected values on the page:

Topic Page

Oral Health

However, once I tried to actually use the terms I captured it never worked. The first part of the logic, where the button will eventually be built, I wrote as:

{% if content.field_taxonomy_resource_type == "Topic Page" %}
  <p> hello, it's working! </p>
{% endif %}

produces no content at all. I expected to see my test paragraph sentence "hello, it's working!" appear on the page.

My best google-foo hasn't helped me at all and, alas, my soul is being crushed. I fear it's something completely obvious that I am just ignorant about.

Can anyone point me to the error of my ways? Why doesn't my twig if statement work?

@clive was absolutely right in the suggestion below that I was naming the array and not the particular item I needed when constructing my if statement. His correction to my code:

{% if node.field_taxonomy_resource_type.entity.label == "Topic Page" %}

is not working though, and the best I can tell is that the variable is unavailable to me. When I dump the variable using {{ dump(node.field_taxonomy_resource_type.entity) }}, I just get NULL.

Clive's answer worked as soon as I changed out node to paragraph. Thanks!

{% if paragraph.field_taxonomy_resource_type.entity.label == "Topic Page" %}

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content.field_taxonomy_resource_type is a render array, which you're comparing against a string. Instead, you need to get access to the label, and extract the term name.

Try this instead (if in a node template):

{% if node.field_taxonomy_resource_type.entity.label == "Topic Page" %}

Or, as we know it's a paragraph template:

{% if paragraph.field_taxonomy_resource_type.entity.label == "Topic Page" %}
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  • thank you for the suggestion. It didn't work: {% if content.field_taxonomy_resource_type.entity.name == "Topic Page" %} <p> clive's suggestion </p> {% endif %} didn't produce anything on the page – Leraa Jun 5 '17 at 14:16
  • oo, i was using your earlier suggestion. I'll retry it with "label" instead – Leraa Jun 5 '17 at 14:17
  • Yeah sorry, that's why I commented instead of answering to start with - needed to check – Clive♦ Jun 5 '17 at 14:18
  • still doesn't work on my case. {% if content.field_taxonomy_resource_type.entity.label == "Topic Page" %} <p> clive's suggestion </p> {% endif %} produced nothing on the page. I wonder what I can do to convert an array object to a string that can be compared. Or make my comparison NOT a string? There will only ever be one term from this vocabulary that will be applicable. Can I grab a machine name or an array index or something? – Leraa Jun 5 '17 at 14:20
  • Strange, that's exactly the method core uses (see core/modules/system/themes/test_theme/node.html.twig for example). Have you tried dumping content.field_taxonomy_resource_type.entity.label to see what it contains? – Clive♦ Jun 5 '17 at 14:23
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I've been looking for something like this as well. I just tested

{% if node.field_taxonomy_resource_type.entity.label == "Topic Page" %}

and it worked for me after a couple of cache refreshes though - I also got null dumps initially when testing.

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  • Thank you, I'll try refreshing the cache several times and see if it comes around... What template are you using to test? – Leraa Jun 5 '17 at 16:24
  • My terminal has about 60 lines of nothing but cache clears from all these tests already. I've also done a few rounds of cache clearing from the admin tool bar too, just to shake things up. I see dumps regularly change according to what test I put in them, so I guess it's working. But I really can't explain my NULLS either – Leraa Jun 5 '17 at 16:37
  • It's a custom one, using Zurb Foundation, but not the the contrib theme. – flamesquirrel Jun 5 '17 at 17:03
  • I'm using a node template if that makes a difference. – flamesquirrel Jun 5 '17 at 17:05
  • here's my code {% if node.field_tester.entity.label == 'testing' %} <h2>{{ label }}</h2> {% endif %} – flamesquirrel Jun 5 '17 at 17:11

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