Hi uzair35

You can use either robots.txt or a firewall with wildcard settings to prevent crawlers from going beyond specific paths like  site.com/shop/, site.com/product-category/cars/, and so on. This way, bots will be blocked from crawling deeper into filtered pages. And normal users can use the filters without any issues.

Also, the development team is working on future updates that could potentially change this by removing links from filters. However, this is still in the planning stage, in coordination with SEO experts to determine the best approach.

Best Regards,
Victor

On the plugin’s side, perhaps a setting that limits the maximum number of filters that can be selected at once? I have implemented something along these lines using the functions.php action but that only works on the checkboxes in the front-end and doesn’t stop bots visiting the site with a pre-formed complex-query URL. Just wondering if the database query could be prevented from running entirely if the query exceeded a max filters limit? (My .htaccess rules work in this regard and the bots don’t even reach Wordpress, but there are the occasional false-positives and it’s not user-friendly receiving a 403 error)

I do appreciate the other attack vectors, etc.. and we run Wordfence which does protect against that kind of thing and I am also using mod_evasive, fail2ban, etc.. with aggressive settings.

The server slowing down due to complex queries isn’t a problem for me any more but I just wondered if part of the solution could be incorporated into FE-Pro because it looks to me from the log files that the plugin is trying to handle the brunt of these attacks.

Kind regards.

Hi Anthony

On the plugin’s side, perhaps a setting that limits the maximum number of filters that can be selected at once?

We will pass this suggestion on to the development team. We are always open to suggestions on what can be implemented on the plugin side.

Best Regards,
Victor

Thanks Victor, that’s great. I think it would be a good quality of life improvement for the plugin.

Hi juhishah

We simply installed this plugin: https://wordpress.org/plugins/code-snippets/

And created a new snippet with the next code:

define( 'FLRT_PERMALINKS_ENABLED', false );

After that, we go to the filter set and hit the update button.

Best Regards,
Victor

Is it possible that this code is coming from the default WordPress theme files, such as the functions.php file or other theme files? I have not installed any plugins for this, even for a single line of code. Please let me know if this is possible or not.

Yes, you can place that code in the functions.php file of your theme. Just keep in mind that if the theme is updated, it may remove that code.

Also, you can create your own mu-plugin if needed. It is a plugin that runs faster than a regular plugin, ensuring everything works correctly.

Basically, you can feed that small code snippet to the AI and ask it to create a mu-plugin, and it will generate a mu-plugin for you. With instructions on how to add it to your site. (thats if you are not familiar with the mu-plugins)

Best Regards,
Victor

Hi ilkerk

Thank you for choosing Filter Everything PRO.

Can you please provide more information about where you are getting this MySQL syntax error and include some logs?

Also, please provide additional information on this:

How can I fix the ordering configuration so that it always sets a valid ORDER BY field?

By which field? Is it connected to the sorting widget, or is it connected to the sorting filter terms?

Best Regards,
Victor

Hi Victor, thanks for your reply. I’m still getting MySQL syntax errors when Filter Everything PRO is active on my WooCommerce product archive / tag pages. Here are two examples from my debug.log: [26-Nov-2025 10:52:16 UTC] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘THEN 2 ELSE 6 END), wp_posts.post_date DESC’ at line 13 for query:

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts INNER JOIN wp_postmeta ON ( wp_posts.ID = wp_postmeta.post_id ) WHERE 1=1 AND ( wp_posts.ID NOT IN ( SELECT object_id FROM wp_term_relationships WHERE term_taxonomy_id IN (627,8) ) ) AND (((wp_posts.post_title NOT LIKE ‘ -6 ‘) AND (wp_posts.post_excerpt NOT LIKE ‘ -6 ‘) AND (wp_posts.post_content NOT LIKE ‘ -6 ‘))) AND (wp_posts.post_password = ’’) AND ( wp_postmeta.meta_key = ‘_stock_status’ AND wp_postmeta.meta_value IN (‘instock’) ) AND ((wp_posts.post_type = ‘product’ AND (wp_posts.post_status = ‘publish’))) GROUP BY wp_posts.ID ORDER BY (CASE WHEN THEN 2 ELSE 6 END), wp_posts.post_date DESC LIMIT 0, 44

And another one:

[27-Nov-2025 02:32:02 UTC] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘DESC, wp_posts.post_date DESC’ at line 13 for query:

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts INNER JOIN wp_postmeta ON ( wp_posts.ID = wp_postmeta.post_id ) WHERE 1=1 AND ( wp_posts.ID NOT IN ( SELECT object_id FROM wp_term_relationships WHERE term_taxonomy_id IN (627,8) ) ) AND (((wp_posts.post_title NOT LIKE ‘ =1234567890-=1234567890-= ‘) AND (wp_posts.post_excerpt NOT LIKE ‘ =1234567890-=1234567890-= ‘) AND (wp_posts.post_content NOT LIKE ‘ =1234567890-=1234567890-= ‘))) AND (wp_posts.post_password = ’’) AND ( wp_postmeta.meta_key = ‘_stock_status’ AND wp_postmeta.meta_value IN (‘instock’) ) AND ((wp_posts.post_type = ‘product’ AND (wp_posts.post_status = ‘publish’))) GROUP BY wp_posts.ID ORDER BY DESC, wp_posts.post_date DESC LIMIT 0, 44

So there are two problems with the generated ORDER BY:

ORDER BY (CASE WHEN THEN 2 ELSE 6 END), wp_posts.post_date DESC

– the CASE WHEN expression is empty → invalid SQL.

ORDER BY DESC, wp_posts.post_date DESC

– again, the first ORDER BY expression is empty.

I am not using any special sorting filter terms in the Filter Set and I am not using a custom sorting widget from the plugin. I just use the standard WooCommerce sorting and your filters on the product archive pages.

Let me know what kind of configuration screenshot or additional info you need (Filter Set settings, WordPress/WooCommerce/Plugin version, etc.) and I will send it.

Best regards, Ilker

Hi Ilker

Thank you for the log data.

Can you please send the credentials to the wp-admin dashboard following this document so we can check it?

Our development team needs to check this on the site in order to find the root of the issue. Also, please attach the page where this error is happening so it can be checked directly, which will help test whether the issue has been resolved.

Best Regards,
Victor

Hi teknovision

We have checked the site. Placing the filter set on the “Pages + your shop page” displayed the filters.

However, there is one thing about your page: you are using dozens of different product widgets to display all of your products separately. A filter set can work with only one query at a time; it cannot work with multiple separate queries simultaneously. You need to display all of your products together with a single product widget in order to filter all of those products.

Best Regards,
Victor

Thank you that worked, I am sorry I did not see the Pages + Shop, thank you for your help!!!

Hi teknovision

We are glad to hear that everything is working.

Best Regards,
Victor

After checking the shop page, we have found a couple of things:

You are currently using #primary for AJAX filtering: https://prnt.sc/1ONL01xg04pd this also covers the filter container. You can try using the products class instead to filter only the products, as described on this page: https://filtereverything.pro/resources/ajax-instructions-only/ this should fix the issue with the mobile filtering.

There is also an explanation on the page about AJAX filtering about what to do if some features stop working, and how you can reinitialize the JS code on filtered pages.

Best Regards,
Victor

Both worked thank you! For the translation is there a way i could provide you the translation?

If you are referring to creating a full localization file via Loco Translate for the Greek language and want to share it with us so we can add it to the plugin, you can send your email via PM here: https://codecanyon.net/user/fe_support

We will contact you, and you can share the localization files. After the development team reviews them, they could be included in future updates.

Best Regards,
Victor

We have checked the site and the page. To filter works now, you simply need to choose the required post list in the filter set settings under “And what for filter”: https://prnt.sc/xOPcGal461k4

Best Regards,
Victor

I am a bit surprised, because I couldn’t select anything there… but if it works then… thank you!

Maybe some type of site caching, but we simply chose the one and hit the update button. In any case, we are happy to hear that everything is working.

Best Regards,
Victor

Hi Elodie

In general, when using WPML or any other translation plugin, translations are created as separate pages. This means a language filter is typically not needed, because switching languages automatically loads the corresponding page versions for EN, UA, KA, and so on. A language filter isn’t necessary in this case, as it won’t actually switch languages.

However, if for some reason all translated products are displayed on the same page, you could add a custom checkbox field with predefined values like EN, UA, KA, and assign the appropriate language code to each product. This would simulate filtering products based on language.

Best Regards,
Victor

Thank you I am going to investigate further in this way.

Hi getgotgems

You just need to go to the comments sections: https://codecanyon.net/item/filter-everything-wordpress-woocommerce-filter/31634508/comments find the required comment and write a reply, also it could be at the bottom of the page in some cases.

You can write a reply in those comments that you have started.

Best Regards,
Victor

I had to confirm my email address with Envato – DONE.

That’s good news.

Can you please provide a short description of what you are trying to achieve so we can give you the relevant information?

Best Regards,
Victor

Hi adroas

Thank you for choosing Filter Everything PRO.

Can you please send the credentials to the wp-admin dashboard following this document so we can check it?

Also, please attach the link to the exact page where you expect the filters to appear, so we can test it.

Best Regards,
Victor

I sent credentials

Hi adroas

We have checked the site. The attribute you used for the filter “product kolor” is absolutely empty and not applied to any of your products. You can check it yourself; here is a screenshot: https://prnt.sc/iquwnDaI4O2Z

Also, you have multiple attributes with the same name; we’re not sure why, but this is what we noticed. In general, you can go to Products > Attributes and check whether any of your attribute terms are applied to at least one product.

Best Regards,
Victor

Hi marikov1

Thank you for choosing Filter Everything PRO.

Please use this option in a filter set for that: https://prnt.sc/sPLBRxE3BIZr

Best Regards,
Victor

So this is an even more complicated setup. To be honest, it is actually a bit overcomplicated in general when it comes to filtering.

However, a couple of things to mention: there is no exclusion functionality in the filtering. It can only display posts based on the chosen filter terms; it cannot work with an exclusion method, as this feature is not yet implemented in the plugin.

So the yes/no option to change logic between include and exclude will not work.

Other than that, filtering will work. Also, if you have any reference site with such a complicated filtering system, you can send a link to that site with the example, so we can study it.

Best Regards,
Victor

It’s actually very simple.

step #1: select category.

step #2: posts of the category + “related” appear in post list.

step #3: click “NO”.

step #4: posts of the category appear in post list.

Step #3 is not an exclusion … it’s an extra filter (stacked filter).

Can your filter query a list within ACF? If the selected category is in the list, then display in post list?

Can filter #1 pass the category selection + post list to filter #2 to do it’s own filtering?

Can filter #2 take that category text and use it to search in a different ACF field, filtering it a second time? By clicking “NO” it will execute the filter?

You need to have posts already displayed on the page. You can create custom functionality to hide them before choosing any filter, but that is not available out of the box.

To simulate the normal behavior, you have all of your posts displayed via WP_Query on the page, and you apply filters to that page. When you choose any category filter term, the posts that have that category applied will be displayed. Another filter (yes/no) will further refine the results. When you click yes or no, it will display posts that have both the chosen category and the corresponding boolean value.

In other words, it displays posts from the Cars category that also have the boolean field set to on.

The filter simply checks the applied data in the database for the posts and returns posts that have both the taxonomy and the custom field applied. This is how it is working, it is not returning any type of lists from ACF and so on. It works directly with the database, displaying only the posts that have the selected filter terms applied.

You can use the Query Monitor plugin on the filtered page to see the database query and understand what type of query is used to display filtered products.

Best Regards,
Victor

Hi kvandenbrule

We have checked the site. If you wanted to create a filter from the product category taxonomy, then everything is displayed correctly. You chose a category taxonomy that is not related to the products. We have created a filter from the product category taxonomy below it.

Best Regards,
Victor

Hi Philipp

Thank you for choosing Filter Everything PRO.

By description, it sounds like you have an AJAX “load more” pagination. After filtering, when clicking on “load more/show more,” it displays posts that were already shown. The issue is that the load-more pagination is completely ignoring the filtered query and continues working with the original query, essentially loading posts as they would appear on the second page without filtering, which causes the duplicated posts.

In such cases, you can use the default numerical WordPress pagination. The problem with load-more/infinite-scroll paginations is that they are all unique; there’s no universal way to make them work with every setup. Each one requires case-specific handling. There used to be a plugin called “Load More Everything” (or something close to that name), which provided compatible load-more paginations, but you need to have the default numerical WordPress pagination available in order to keep working with that plugin.

Best Regards,
Victor

We have checked the site, and the issue is related to the product slider itself. At the moment, we turned off caching in the product slider settings: https://prnt.sc/32M_ZE9lthKt and it seems everything is working correctly. Most likely, users were seeing the cached version, which is why filtering didn’t apply any changes. After turning caching off, everything appears to be filtering properly both in the admin and for users who are not logged in.

You might want to experiment with those caching settings and check the official documentation, because if the query is fully cached, the filtering will not work with it.

Best Regards,
Victor

Wow. Thank you so much you are the best support

You can also adjust the CSS on your site so there is less sidebar movement during page loading by adding the necessary styles, ensuring the sidebar doesn’t shift depending on whether products are present or not.

Best Regards,
Victor

Hi Parametrix1

Thank you for choosing Filter Everything PRO.

Please send via PM at https://codecanyon.net/user/fe_support the email address we can use to contact you, so we can request the required data in order to try generating the license key for you.

Best Regards,
Victor

Hi harry553

Thank you for choosing Filter Everything PRO.

Yes, you can activate the plugin on two sites, which is usually one staging site and one production site.

How to get a license key:

Please use incognito mode in your browser!

In order to set the License key for the Filter Everything PRO plugin, simply head to Filters -> Settings -> License and click the “Get your License Key” button.

It will take you to a new page where you have to log in with your Envato credentials (with an account where you have purchased the plugin) and obtain your License key.

This is the license key that is used for activation of the plugin.

Best Regards,
Victor

Hi cas25

We are not even sure what to recommend here. In general, when there are 0 products, it displays the WP_Query message for when no products are found. Instead of that message, you can use your own custom functionality to display your recommended products. However, please note that this message is not from our plugin; it originates from the page builder or theme templates.

Best Regards,
Victor

Hi Victor,

Thanks for your response. What I am actually trying to achieve is an extra grid below the existing grid of products, with some kind of “related products”. So, actually not a message for not found products, but an extra query with related products which is in turn filtered.

Best, Cas

Hi Cas

Then you need to experiment with different approaches, and you can use the function to retrieve the chosen filter and pass it to your second query in order to display relative products or something close to that.

Best Regards,
Victor

Hi marketrix23

Thank you for choosing Filter Everything PRO.

Please check this page: https://filtereverything.pro/resources/ajax-instructions-only/#ajax_related_problems

Especially this part:

jQuery(document).on('ready', function(e){
    /* Plugin function to re-init, e.g. jQuery("[data-fancybox]").fancybox(); */
});

Where can you place the function to reinitialize the required JS functionality.

Best Regards,
Victor

Hi weareboylen

We do not have access to the admin panel to check how the filter sets are configured, but we can more or less understand what the issue is.

Most likely, you created one filter set and placed it on “Products + Any product,” and now you want the filters to work on all of your singular product pages.

However, instead of working on each product page, it is only working correctly on the first product in the list (those are the counters that you see). When you place a filter set on “any product pages”, it takes the query from the first product page and assumes that the query is the same on every other page, but in your case, it is not using the main query. It uses unique queries on each product page, so you need a separate filter set for each product page in order to make it work as you expect it to work.

To sum your case up. You have 10 singular product pages = 10 unique queries, which requires 10 separate filter sets for each product page, so each filter set will work on the exact product page with its exact query. If the product pages somehow used one main query across all of them, then it could work with one filter set just like on the default archive pages.

Best Regards,
Victor

Yes, the filter does work if set only to one Post.

Can I not get the ID of the current post and use that variable with the shortcode? `$postID = get_the_id()`?

We have many Posts and it is ungainly to create a filter for each, and also will not account for new Posts. And edits will have to be done to each filter individually if we want to make any changes.

Hi weareboylen

For such a setup, you need a separate filter set. It is not an issue with the post ID; each page has its own unique query, so if there is no filter set that works with that specific query, it will not filter anything.

If, instead of singular product pages, you used category pages that rely on the main query, then one filter set would be enough. But with the setup you currently have, you need a separate filter set for each product page.

Why is it not possible to place one filter set and scan each product page and save all of those queries to work with each of them? Because it would require scanning many pages, and the more you have, the longer it will take, 1k or 10k product pages. Basically, all script-running timers on the server would stop this process. Besides, opening each page and looping through a huge list to make sure it is working with that exact unique query would add another layer of functionality that would slow down the filtering and the page loading itself. And this list should be regenerated every time with new products added or removed.

The general approach is to have filters on the main pages, like shop pages and archive pages, such as categories, cars, laptops, and so on. But since you want to go even further by having a filter set on each product, this requires a separate filter set for each product page, as each page comes with its own unique query. Is it recommended to add filters to product pages as well? Not really, as it would require more server resources for functionality that is not very useful. However, if you want to go with this approach, you need a separate filter set for each page.

Best Regards,
Victor