Magento 2.3 Advanced search giving 404

Question

I would like to use the advanced search on my home page, it works fine if I click the advanced search link in the footer at the bottom. But if I add

{{block class="Magento\CatalogSearch\Block\Advanced\Form" template="Magento_CatalogSearch::advanced/form.phtml"}}

to my home page, the search results are all 404?

Answer 1

You cannot achieve your request like this way

You get the issue like 404 because of the form post URL of home page advanced search is : www.example.com/cms/index/result which is a 404 page at Magento.

And form Post URL defined at getSearchPostUrl()

 public function getSearchPostUrl()
    {
        return $this->getUrl('*/*/result');
    }

So you have to change it to full URL

 public function getSearchPostUrl()
    {
        return $this->getUrl('catalogsearch/advanced/result');
    }

So, you have to create a plugin at on this method which change url to $this->getUrl('catalogsearch/advanced/result');

Create a custom module and define plugin at di.xml app/code/{Vendor}/{Modulename}/etc/frontend.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
   <type name="Magento\CatalogSearch\Block\Advanced\Form">
        <plugin name="change_post_url" sortOrder="1"
                type="{Vendor}\{Modulename}\Plugin\FormPlugin" />
    </type>
</config>

Plugin class located at FormPlugin.php app/code/{Vendor}/{Modulename}/Plugin/

<?php
namespace {Vendor}\{Modulename}\Plugin;

class FormPlugin
{

    public function afterGetSearchPostUrl(\Magento\CatalogSearch\Block\Advanced\Form $subject, $result)
    {
        return $subject->getUrl('catalogsearch/advanced/result');
    }
} 

Also, this module should have:

1. app/code/{Vendor}/{Modulename}/etc/module.xml.
2. app/code/{Vendor}/{Modulename}/composer.json
3. . app/code/{Vendor}/{Modulename}/registration.php.

After do module enabled and setup upgrade, Di compile, Static content deploy After adding the event you should flush the cache.

The Module structure will like