# Attribute

The Attributes are attached to the entity through relation.

public function attributes()
{
    return $this->hasMany(Attribute::class, 'entity_id');
}

# Add

To create a migration, use the eav:make:attribute

You can create using one of the below options.

# --attributes

$ php artisan eav:make:attribute [entity_code]  --attributes [attr1:type,attr:type,...]

If you have few attribute, you can use --attributes option where you can mention attribute with their type as comma separated values. Once created remember to update migration if necessary like backend_type, frontend_type for the attributes.

eg :-

$ php artisan eav:make:attribute product -A name:string,search:boolean,description:text 

# --source

If you have too many attibutes you can use a CSV file. Here is a sample file with the header that can be used.

$ php artisan eav:make:attribute [entity_code]  --source [path/to/the/attribute.csv]

It will fill all the details from the file and if needed you can update the migration.

eg :-

$ php artisan eav:make:attribute product -S storage/attribute.csv

Both the options will also map it to the given entity. If you check the migration file it will have code that is similar to the code given below.

Eav\Attribute::add([
    'attribute_code' => 'status',
    'entity_code' => 'product',
    'backend_class' => null,
    'backend_type' => 'int',
    'backend_table' =>  null,
    'frontend_class' =>  null,
    'frontend_type' => 'select',
    'frontend_label' => 'Status',
    'source_class' =>  Eav\Attribute\Source\Boolean::class,
    'default_value' => 0,
    'is_required' => 0,
    'is_filterable' => 0,
    'is_searchable' => 0,
    'required_validate_class' =>  null
]);

Eav\EntityAttribute::map([
    'attribute_code' => 'status',
    'entity_code' => 'product',
    'attribute_set' => 'Default',
    'attribute_group' => 'General'
]);

The Eav\Attribute::add add's the attribute to the system and Eav\EntityAttribute::map will map the attribute to the entity and also assign to a set and group.

# Retrieve

To retrieve the attributes related to a entity.

$entity = \Eav\Entity::findByCode('code');

$attributes = $entity->attributes;

To retrive single attribute

$sizeAttribute =  Eav\Attribute::findByCode('size', 'product')