InlineCreate Operation does not work for HasMany relationship in Laravel backpack 5

Question

I can't use InlineCreate Operation for the case of HasMany relationship in laravel backpack 5.

I've a page for creating new item group which will allow to add multiple attributes and multiple attribute values for each corresponding attribute.

ItemGroup model has following function

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

Attribute model has following function

public function attributeValues(): HasMany
{
    return $this->hasMany(AttributeValue::class);
}

Item group creation page: https://i.postimg.cc/zfdV7JhB/Screen-Shot-2023-03-06-at-1-47-20-PM.png

In ItemGroupCrudController, I tried to add the following code block to achieve inline creation of Attribute values. But this did nothing.

use InlineCreateOperation;
...
...

protected function setupCreateOperation(): void
{
...

$this->crud->addField([
    'name' => 'attributes',
    'type' => "relationship",
        'subfields' => [
            [
                'name' => 'name',
                'label' => "Attribute",
                'wrapper' => ['class' => 'form-group col-md-6']
            ],
            [
                'name'     => 'attributeValues',
                'label'    => "Values",
                'wrapper' => ['class' => 'form-group col-md-6']

                'type' => "relationship",
                'ajax' => true,
                'inline_create' => true,
            ]
        ],
]);

The reason I guess inline create operation does not work for HasMany relation.

Please suggest a solution.

score 0 · Answer 1 · answered Mar 15 '23 at 15:23

Hmm... difficult to know when there is no error message. But two things stand out to me:

(1) 'inline_create' => true only works for single relationships (1-1, 1-n). For multiple relationships (n-n) you have to define the entity. Take a look at Step 2 in the docs of InlineCreate - https://backpackforlaravel.com/docs/5.x/crud-operation-inline-create#how-to-use. In your case I believe it would be:

                'inline_create' => ['entity' => 'attributeValue'],

(2) Please make sure there is a CRUD for attributeValues. That is what InlineCreate does, it takes the Create screen from that CRUD... and uses it inside another CRUD.

InlineCreate Operation does not work for HasMany relationship in Laravel backpack 5

1 Answers1