select_multiple works, select2_multiple don't

[f-liva]

When I try to use a select2_multiple field instead of a select_multiple field, I get this error:

ErrorException in b58d2ac85e3cfb89e50920aa215a69bd96d9acac.php line 25: Array to string conversion (View: D:\Progetti\instalmec.it\Instalmec\vendor\backpack\crud\src\resources\views\fields\select2_multiple.blade.php) (View: D:\Progetti\instalmec.it\Instalmec\vendor\backpack\crud\src\resources\views\fields\select2_multiple.blade.php) (View: D:\Progetti\instalmec.it\Instalmec\vendor\backpack\crud\src\resources\views\fields\select2_multiple.blade.php)

I changed nothing else the field type, from select_multiple to select2_multiple

[tabacitu]

That's very odd, I've just tested and it works perfectly for me. I've even used it in PageManager.

Here's my syntax:

$this->crud->addField([       // Select2Multiple = n-n relationship (with pivot table)
                                'label' => "Tags",
                                'type' => 'select2_multiple',
                                'name' => 'tags', // the method that defines the relationship in your Model
                                'entity' => 'tags', // the method that defines the relationship in your Model
                                'attribute' => 'name', // foreign key attribute that is shown to user
                                'model' => "Backpack\NewsCRUD\app\Models\Tag", // foreign key model
                                'pivot' => true, // on create&update, do you need to add/delete pivot table entries?
                            ]);

What's yours?

[tabacitu]

Also, have you defined your relationships on your models? That might be the issue.

[f-liva]

App\Http\Controllers\Admin\ProductCrudController

$this->crud->addField([
    'label'     => 'Tags',
    'type'      => 'select2_multiple',
    'name'      => 'tags',
    'entity'    => 'tags',
    'attribute' => 'name',
    'model'     => 'App\Models\Tag',
    'pivot'     => true,
]);

App\Models\Product

public function tags()
{
    return $this->belongsToMany('App\Models\Tag');
}

App\Models\Tag

public function products()
{
    return $this->belongsToMany('App\Models\Product');
}

The strange is that the normal select works, it is only the select2 that doesn't.

[crameep]

Same exact issue. I notice the Select2 Multiple works until I add tags, then it breaks with
ErrorException in d7929459cb7e413954346700e4814b9d913f1d39.php line 25:
Array to string conversion (View:

[f-liva]

Maybe some directive for tags is hard coded in the CRUD core and goes in conflict?

[tabacitu]

EUREKA! Who knew it was a mistake that small? :-)
You were testing on PHP 7, I was not.

[f-liva]

Magic happens switching to PHP 7! 😂