Taxonomy term name as contextual filter for view

Question

In D7 I was able to filter a view according to a taxonomy term name taken from the URL. An example would be this URL

http://www.gbyte.co/tags/drupal-planet/rss.xml

"drupal-planet" would be converted to the taxonomy term ID which then would filter the view results accordingly.

Now I have set up a corresponding D8 view with a contextual filter "Content: Tags (field_tags)", field_tags being the taxonomy field. However the D8 view will only show results when I pass the actual term ID into the URL like this:

http://www.gbyte.co/tags/9/rss.xml

I would like it to also work with the term name like D7 did. Is the functionality missing, or do I need to configure the view differently?

Answer 1

The Term name converted to Term ID filter looks to be missing for D8 Views.

One site-builder workaround, is to add a Relationship, Taxonomy terms on node then to add a Taxonomy Term: Name filter to Contextual Filters using the aforementioned relationship. Checking the Specify validation criteria checkbox, set your Validator to Taxonomy term name & check the appropriate Taxonomy to filter on.

Answer 2

To expand on Shawn Conn's answer:

• Within the view config, under Advanced -> Relationships click 'Add'
• Now select 'Taxonomy terms on node'
• On the next screen choose the 'tags' vocabulary and require the relationship.
• Now under Advanced -> Contextual Filters click 'Add'
• Under 'When Filter is NOT available', choose 'Provide default value', 'Raw value from URL'. Select any other options appropriate to your needs.
• Under 'When Filter IS available or a default value is provided' choose 'Specify Validation Criteria' and select 'Taxonomy Term Name' for the validator. Choose the 'tags' vocabulary and then click apply.

Hope that helps!

Answer 3

Just for the sake of completion, at the time of writing the question I've managed to get around this issue by converting the taxonomy term name from the URL to a term ID in views_hook_pre_view() and then using it as input for the contextual filter which accepts taxonomy IDs.

Here is the code for the views hook:

/**
 * Implements hook_views_pre_view().
 */
function my_module_views_pre_view(\Drupal\views\ViewExecutable $view, $display_id, array &$args) {
  if ($view->id() == 'blog' && $display_id == 'feed') {
    if (isset($args[0])) {
      $term = taxonomy_term_load_multiple_by_name($args[0], 'tags');
      if (empty($term)) {
        $term = taxonomy_term_load_multiple_by_name(str_replace("-", " ", $args[0]), 'tags');
      }
      if (!empty($term)) {
        $tid = key($term);
        $args[0] = $tid;
      }
    }
  }
}

Answer 4

@kiethm Has provided the correct way to approach this - Under the Contextual Filters you need to select 'Name' and not 'Taxonomy Term ID' then set your validation criteria to use 'Taxonomy Term Name'.

Answer 5

I don't know if you still have this problem but I was able to create a relationship for "Taxonomy terms on node" using the desired taxonomy vocabulary and then create a contextual filter using that relationship for "Taxonomy term: Name" which allows you to validate based on name rather than TID.

Answer 6

I wrote a tiny module to restore the missing functionality and get this working properly again:

https://www.drupal.org/project/views_taxonomy_term_name_into_id

It re-adds the 'Convert term name into ID' argument validator for taxonomy terms used in 'contextual filters' in Views. See the project page for more info and instructions.

Enjoy, -Derek (dww)

Answer 7

Hey I have been looking for this answer for a while. For anyone else like me looking for how to make it work, I Gumped my way into my into success partly from here and drupal.org's results and then also from following: http://redcrackle.com/blog/adding-contextual-filter-view-drupal-8

I'm using Drupal 8 and Zircon. I'm brand new so I may use the wrong terms. I wanted to make contextual image links in "Panel first col 1" based on the Category of the page that someone is on. What I did was go to Structure > Views > Carousel (the view that has the pictures in that block region) > Advanced > Add by Contextual Filters > Has taxonomy term ID > select in Provide default value: Taxonomy term ID from URL (which made no sense to me but whatever) > then I checked all three boxes: Load default filter from term page, Load default filter from node page, that's good for related taxonomy blocks, Limit terms by vocabulary. Then for Vocabularies I checked Categories.

PHEW! Finally! Thanks to you all on here for pointing me in the right direction! I could not explain why it works, totally, but whatever, it does and I will keep being employed.

Answer 8

I have achieved this in Drupal-8 by taking contextual filter: of "Taxonomy term: Name"

Then Provide default value Type Taxonomy Term ID From Url

Then specifying the following validation criteria: