Custom Categories Question

Hi,
the query should be corrected a little.

In your case you want to display any published post that is not under back-issue term of taxonomy. First of all: what’s the name of this taxonomy? For example, “category” is the name of a taxonomy, like post-tag is the name of another taxonomy. In the code you entered, the name of the taxonomy is missing:

[taxonomy] => back-issue <<<=== This should be the name of the taxonomy
...
[0] => back-issue

So, let’s see an example.

In my site I want to display posts from the custom post type product. I do not want to display products that have an HD display.

In this case:
– display is the name of a taxonomy
– hd is a term of the taxonomy display.

The query will be:

$pis_query = Array
(
    [post_type] => product
    [tax_query] => Array
        (
            [0] => Array
                (
                    [taxonomy] => display
                    [field] => slug
                    [terms] => Array
                        (
                            [0] => hd
                        )

                    [operator] => NOT IN
                )

        )

    [posts_per_page] => 6
    [orderby] => date
    [order] => DESC
    [post_status] => publish
)

The following are two screenshots​ of the widget panel:

Let me know, please.

• This reply was modified 9 years, 1 month ago by Aldo Latino.

In the query, this line

[taxonomy] => issue, supplement

must contain the name of the taxonomy, not the terms of the taxonomy.
Knowing that:

– issue and supplement are categories;
– back-issue is a tag;
– you want to display any product (a custom post type), regardless of the category;
– you want to hide posts tagged with back-issue

here is the correct query:

$pis_query = Array
(
    [post_type] => product
    [tax_query] => Array
        (
            [0] => Array
                (
                    [taxonomy] => post_tag
                    [field] => slug
                    [terms] => Array
                        (
                            [0] => back-issue
                        )

                    [operator] => NOT IN
                )

        )

    [posts_per_page] => 2
    [orderby] => date
    [order] => DESC
    [post_status] => publish
)

This query will show the most recent two posts published as product, excluding those tagged with back-issue.

Here is the updated screenshot:

Let me know, please.

P.S. After solving this step, I will tell you how to get posts with certain categories and exclude posts tagged with certain tags.

Yes, you’re right.

Let’s say that we have a custom post type “product”. We have already published products under many categories and tags. We want to display products published under the “aciform” category, excluding those tagged with “habergeon”.

Since you have already understood the solution, an image should be enough:

This is the resulting query:

$pis_query = Array
(
    [post_type] => product
    [tax_query] => Array
        (
            [relation] => AND
            [0] => Array
                (
                    [taxonomy] => category
                    [field] => slug
                    [terms] => Array
                        (
                            [0] => aciform
                        )

                    [operator] => IN
                )

            [1] => Array
                (
                    [taxonomy] => post_tag
                    [field] => slug
                    [terms] => Array
                        (
                            [0] => habergeon
                        )

                    [operator] => NOT IN
                )

        )

    [posts_per_page] => 6
    [orderby] => date
    [order] => DESC
    [post_status] => publish
)

Obviously you can enter more comma-separated categories and/or tags.

In case of custom taxonomies, enter the taxonomy name instead of category and the term name instead of post_tag.

Have fun!