Add custom filterable attribute

[madonzy]

Is it possible to add custom filterable attribute?

Preconditions

OS: Linux debian-8 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux
Magento Version: 2.1.4 CE
ElasticSuite Version: 2.3.3
Environment: developer

Steps to reproduce

1. In own module setup I use this configuration while adding the attribute:

[
                'type'                    => 'text',
                'backend'                 => 'Magento\Eav\Model\Entity\Attribute\Backend\ArrayBackend',
                'frontend'                => '',
                'label'                   => 'Brand',
                'input'                   => 'multiselect',
                'class'                   => '',
                'source'                  => 'XXX\YYY\Model\Source\Array',
                'global'                  => ScopedAttributeInterface::SCOPE_GLOBAL,
                'visible'                 => true,
                'required'                => false,
                'user_defined'            => true,
                'default'                 => '',
                'searchable'              => true,
                'filterable'              => true,
                'comparable'              => false,
                'visible_on_front'        => true,
                'used_in_product_listing' => true,
                'unique'                  => false,
                'apply_to'                => '',
            ]

2. Add this attribute to default set
3. I source model I override this method:

/**
     * {@inheritdoc}
     */
    public function getAllOptions()
    {
        if ($this->_options === null) {
            $this->_options = [
                [
                    'value' => 'nike',
                    'label' => 'Nike'
                ],
                [
                    'value' => 'adidas',
                    'label' => 'Adidas'
                ],
                [
                    'value' => 'puma',
                    'label' => 'Puma'
                ]
            ];

            // TODO: implement brand fetching
        }

        return $this->_options;
    }

4. Set one product to value Adidas, go to the category page...
5. Check the front

Expected result

1. My attribute will apply as filter in category page (the same as activity, style, features, etc. attributes)

Actual result

1. There's no filter added :D

[romainruaud]

Hello @madonzy and thank you for submitting this issue.

This should work as intended, are you sure the index is properly rebuilt ? You should also ensure that enough products among all those displayed are having values for this attribute, otherwise it could get skipped by the facet coverage rate (see https://github.com/Smile-SA/elasticsuite/wiki/Attribute-configuration#faceting-configuration)

Let me know,

Regards,

[madonzy]

@romainruaud Index rebuilt is "green" :)
Facet coverage rate is set to 0 (is it ok?), I have only one product with this attribute and I don't wand to set others yet.

[romainruaud]

Ok I found it.

You did not properly create your attribute.

For a multiselect one, you have to use "varchar" as the type.

If you set it to "text" as you did previously, Magento will autoritary change it to "varchar" when you save it from the backoffice, resulting as loading empty data for product when indexing to the search engine.

Please drop your attribute, recreate it properly (as a varchar) and set your product values again, then process a full reindex.

Feel free to reopen the issue if you are still encountering problem.