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Arno.
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August 23, 2022 at 7:22 PM #37984
Arno
ParticipantHi,
I'm having an issue with creating a tax_query with Twig. My view gets posts using get_posts(args), and the tax_query within args should filter on multiple taxonomies. It works fine if hard coded like this:
{% set tax_query = [[{relation: 'OR'}], [{taxonomy: 'taxonomyslug1', terms: [336]}], [{taxonomy: 'taxonomyslug2', terms: [324]}] ] %}However, I need to check if the taxonomy of the current post actually has terms selected. If so, the taxonomy should be included in the tax_query. If not, it should not be included.
In the below code, I'm using the Twig merge function to compose the tax_query. I loop through an array of arrays with terms that I composed earlier, and I skip the empty arrays of terms. The array taxonomies_to_match contains the taxonomy slugs.
{% set tax_query = [{relation: 'OR'}] %} {% for taxonomy_terms_to_match_ids in taxonomies_terms_to_match_ids %} {% if taxonomy_terms_to_match_ids is not empty %} {% set tax_query = tax_query|merge([{taxonomy: taxonomies_to_match[loop.index0], terms: taxonomy_terms_to_match_ids}]) %} {% endif %} {% endfor %}This does return posts in some cases, but the results are not ok. I think the problem is that tax_query should be an array containing arrays. I think the merge messes things up and somehow forces everything into a one-dimensional array. Is there another way to dynamically create the tax_query?
August 23, 2022 at 10:48 PM #37992Long Nguyen
ModeratorHi Arno,
You can refer to this topic to create a tax_query parameter with multiple taxonomies https://support.metabox.io/topic/querying-terms-from-multiple-taxonomies/#post-36948
Then follow this topic to know how to update the object property in Twig https://stackoverflow.com/questions/7719838/updating-object-properties-in-twig
Let me know how it goes.
August 24, 2022 at 2:39 AM #38002ParticipantHi Long,
Thank you. Yes, your first example works. This is what I have and it works fine:
{% set args = { post_type: 'promotion', numberposts: 3, orderby: 'meta_value_num', meta_key: 'content_popularity', order: 'DESC', meta_query: [{ key: 'promotion_start_date', value: 'now'|date("Y-m-d H:i"), compare: '<=', }, { key: 'promotion_end_date', value: 'now'|date("Y-m-d H:i"), compare: '>=', }], tax_query: { "relation": "OR", 0: { taxonomy: "travel-tickets", terms: "336" }, 1: { taxonomy: "activities", terms: "324" } }However, whatever I try, creating the tax_query dynamically with "merge" fails (no results). And I don't understand the "do" example in your second link, to be honest.
August 24, 2022 at 2:07 PM #38008ParticipantI think what goes wrong with the Twig merge, is that it looks at the key-value pairs and overwrites the values already in the array. If this is in the array:
taxonomy: "travel-tickets"
and I want to add this:
taxonomy: "activities"
it will actually replace it. I think.August 24, 2022 at 3:48 PM #38012ParticipantI can't find a way to solve this in Twig. The merge filter does not seem to work for this scenario. It looks like there are/were Twig "add" and "push" filters too, but they're not recognized in the view code.
For others with this issue: I created a PHP function to compose the tax query. As arguments, it takes the relation (AND/OR), an array of taxonomy slugs, and an array containing an array of terms.
function get_tax_query($relation, $taxonomy_slugs = array(), $term_ids = array()) { $tax_query = array(); if (count($taxonomy_slugs) > 1) { $tax_query['relation'] = $relation; } foreach ($taxonomy_slugs as $key => $taxonomy_slug) { array_push($tax_query, array('taxonomy' => $taxonomy_slug, 'terms' => $term_ids[$key] )); } return $tax_query; }So far this seems to work well.
If you know a way to do this directly in Twig, please share.
August 25, 2022 at 12:19 PM #38032ModeratorHi,
To merge an object to an object in View with Twig code you can follow this example code:
{% set my_tax_query = { "relation": "OR" } %} {% set my_tax_query = my_tax_query|merge({ 0: { taxonomy: "category", field: "slug", terms: "aciform" } }) %} {% set my_tax_query = my_tax_query|merge({ 1: { taxonomy: "category", field: "slug", terms: "cat-a" } }) %} {% set args = { post_type: "post", posts_per_page: 5, tax_query: my_tax_query } %} {% set posts = mb.get_posts( args ) %} {% for post in posts %} {{ post.post_title }} {% endfor %}Hope that makes sense.
August 25, 2022 at 1:54 PM #38037ParticipantMuch appreciated, thank you. Will try it out later.
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