Magento 2.1.9 - Provided attribute can not be used with configurable product

Question

1. Created custom product attribute set Bag Size based on Default attribute set
2. Created custom attribute bag_size and added 4 custom swatches i.e. bag sizes
3. Created 4 simple products with different size and assigned to created attribute set
4. Created configurable product and under Configuration added those simple products manually

Getting below error and unable to create configurable product.

Following the same process of creating configurable product where simple products are created and assigned to one configurable product.

Attribute Properties

Attribute Advanced Properties

Answer 1

So that an attribute can be used for configurable products, it has to have the following properties:

• scope is set to global
• attribute is visible
• attribute is user defined
• attribute uses a source (which is e.g. the case for dropdown and multiselect attributes)

See \Magento\ConfigurableProduct\Model\Product\Type\Configurable::canUseAttribute.

Answer 2

this is the good code to create a product attribute that can be used for configurable product tested on Magento 2.3.

The required parameters are :

'source'=> \Magento\Eav\Model\Entity\Attribute\Source\Table::class
'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,
'user_defined' => true,
'visible' => true,

complete code

$eavSetup->addAttribute(
        \Magento\Catalog\Model\Product::ENTITY,
        'size',
        [
            'group' => 'Erp',
            'type' => 'int',
            'label' => 'Taille',
            'input' => 'select',
            'required' => false,
            'sort_order' => 20,
            'position'=> 0,
            'source'=> \Magento\Eav\Model\Entity\Attribute\Source\Table::class,
            'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,
            'user_defined' => true,
            'is_used_in_grid' => true,
            'is_visible_in_grid' => true,
            'is_filterable_in_grid' => true,
            'visible' => true,
            'is_html_allowed_on_front' => false,
            'visible_on_front' => false
        ]
    );

Answer 3

In my case I have to add around 3000 attribute values. For that reason I created attribute and its options progrmmatically. When I try to use this attributes in product level it was giving trouble.

I had the same problem when I try to edit the product. After some short of experiment, I created attribute manually and added its options progrmmatically that solved my problem. And ensure the scope of attribute to Global, Visible on Catalog Pages on Storefront to Yes.

Answer 4

In addition to @Simon's answer:

1. Text Swatches can be used for creating configurable products. If you're adding the attribute programmatically, just make sure you use

Magento\Eav\Model\Entity\Attribute\Source\Table

as source_model.

2. Also, if you're adding the attribute programmatically, make sure you don't add any value to the field "apply_to" (found in catalog_eav_attribute). Don't know why, didn't bother to find out.

Answer 5

In case where your get this error because attribute have been added programmatically and

$attribute->getIsUserDefined() equal false mean it's a system attribut then

you can run sql query :

UPDATE `dpx_eav_attribute` SET `is_user_defined` = '1' WHERE `dpx_eav_attribute`.`attribute_code` = "{your attribut code}";

Answer 6

Just been debugging this since the above did not help. Found another issue in the following file: \Magento\ConfigurableProduct\Model\ConfigurableAttributeHandler::isAttributeApplicable

We had this issue with migrated attributes from m1. The method above checks if attribute apply_to is empty or exactly matches

$types = [
            \Magento\Catalog\Model\Product\Type::TYPE_SIMPLE,
            \Magento\Catalog\Model\Product\Type::TYPE_VIRTUAL,
            \Magento\ConfigurableProduct\Model\Product\Type\Configurable::TYPE_CODE,
        ];

This was not the case for us. So, cases where attribute apply_to is set to simple,configurable for example won't show up in the configurable wizard.