Add pre_update_term filter hook

[kobi1]

Hi
In file:

wp-includes/taxonomy.php

In function:

wp_update_term

How can to validate a custom term before updated?
A filter needs here like pre_insert_term in wp_insert_term() functin.
I think this filter has been forgotten in here.

$term = apply_filters( 'pre_edit_term', $term, $taxonomy, $args );

[nihar007]

I added a filter hook before update a term called pre_update_term

Hi
In file:
wp-includes/taxonomy.php
In function:
wp_update_term
How can to validate a custom term before updated?
A filter needs here like pre_insert_term in wp_insert_term() functin.
I think this filter has been forgotten in here.
$term = apply_filters( 'pre_update_term', $term, $taxonomy, $args );

https://core.trac.wordpress.org/ticket/58404

Trac ticket:

[oglekler]

I am adding needs-testing to highlight that this patch is ready for testing, and also needs-unit-tests as a suggestion that we need to check that this filter will be fired correctly in the future. It shuld be a simple enought Unit test.

[azaozz]

Looking at 58404.patch, why is the filter before the if ( is_wp_error( $term ) )? I.e. should it be filtering erroneous updates for non-existing terms? Seems not?

[kirasong]

Thanks everyone for your work on this!

​This ticket was reviewed by a team of folks, including @oglekler and @chaion07 in a 6.3 ticket triage chat today, as enhancements need to be resolved or moved out of the 6.3 milestone before Beta 1, today.

As there's been recent feedback from @azaozz and @oglekler that hasn't yet been addressed/answered, I'm going to move this to the 6.4 milestone so that there is more time to work on the enhancement.

[nihar007]

Replying to azaozz:

Hi, I got the point. I added another patch.

[oglekler]

Hi @nihar007, this ticket was discussed during a bug scrub. It looks like PR has unexpected changes. And also this new filter needs to be covered by Unit tests (you can look existing tests for reference). And since 6.4 should be since 6.4.0.

Add props to @mukesh27

[nihar007]

I tested my last patch and saw, there was some unwanted code. I'm so sorry for this. I added the correct code and also wrote the right comment.

[nihar007]

Replying to oglekler:

Hi @oglekler,
I tested my last patch and saw, there was some unwanted code. I'm so sorry for this. I added the correct code and also wrote the right comment.

[oglekler]

Hi @nihar007, I assume this filter needs to be covered with Unit test to ensure that it will be present and working from now on. I suppose, it should be going into tests\phpunit\tests\term\wpUpdateTerm.php
and test_count_should_not_pass_through_main_get_terms_filter() function can be used as an example of a test or ​https://github.com/WordPress/wordpress-develop/pull/4717/files - this can be useful as well.

[oglekler]

This ticket was discussed during bug scrub.

@mukesh27 offered to take a closer look :)

Sorry for the mistaken review request. Looking at this, I'm unsure what the filter would provide that the current wp_update_term_data filter does not. Could you provide an example use case where this would be useful, @2mkabir?

[joemcgill]

Moving to future release and marking for a second opinion regarding my question on the PR.

[hellofromTonya]

Sorry for the mistaken review request. Looking at this, I'm unsure what the filter would provide that the current wp_update_term_data filter does not. Could you provide an example use case where this would be useful?

I agree with @joemcgill in that I'm not sure what the filter is accomplishing and the use case for it.

In the latest patch 58404-3.patch​, what happens if the filtered $term is no longer an object or instance of WP_Term? A safeguard check is needed to protect user sites.

Hi @joemcgill. I need pre_update_term filter like this:

$term = apply_filters( 'pre_update_term', $term, $taxonomy, $args );

if ( is_wp_error( $term ) ) {
     return $term;
}

By utilizing this filter, I can supply a custom WP_Error() object as the return value for $term. This is analogous to the behavior of the pre_insert_term filter.

It serves its purpose within the /wp-admin/edit-tags.php page, specifically in the validation process of the custom field within the "quick edit" form.

### About my use case

I have created a plugin for Woocommerce ​select-quantity-by-attribute-for-woocommerce
I have added a custom field to the configure terms page of the product attributes. A sample url of this page:
/wp-admin/edit-tags.php?taxonomy=pa_quantity&post_type=product
This custom field is require and also added to the quick edit form.
My problem is that there is no way for validation my custom require field.

My custom field (Quantity). I want to show the error message if the Quantity field be empty

Show error message for name field that is default of the Wordpress.
I want to do this work for the Quantity field.

This is my code that doing validation with pre_insert_term filter. Also I want to do like this with pre_update_term filter.
​https://github.com/2mkabir/select-quantity-by-attribute-for-woocommerce/blob/master/select-quantity-by-attribute-for-woocommerce.php#L99