### Install nova-flexible-content

Source: https://whitecube.github.io/nova-flexible-content

Install the package using Composer. This is the first step to using the Flexible content field in your Laravel Nova project.

```bash
composer require whitecube/nova-flexible-content
```

--------------------------------

### Implement custom field resolution

Source: https://whitecube.github.io/nova-flexible-content

The get method retrieves content and transforms it into a collection of hydrated Layout instances.

```php
/**
 * get the field's value
 *
 * @param  mixed  $resource
 * @param  string $attribute
 * @param  \Whitecube\NovaFlexibleContent\Layouts\Collection $layouts
 * @return \Illuminate\Support\Collection
 */
public function get($resource, $attribute, $layouts) {
    $blocks = $resource->blocks()->orderBy('order')->get();

    return $blocks->map(function($block) use ($layouts) {
        $layout = $layouts->find($block->name);

        if(!$layout) return;

        return $layout->duplicateAndHydrate($block->id, ['value' => $block->value]);
    })->filter();
}
```

--------------------------------

### Generate Layout via Artisan

Source: https://whitecube.github.io/nova-flexible-content

Use the artisan command to scaffold a new layout class.

```bash
php artisan flexible:layout {classname?} {name?}

// Ex: php artisan flexible:layout SimpleWysiwygLayout wysiwyg
```

--------------------------------

### Generate Preset via Artisan

Source: https://whitecube.github.io/nova-flexible-content

Use the artisan command to scaffold a new preset class.

```bash
php artisan flexible:preset {classname?}

// Ex: php artisan flexible:preset WysiwygPagePreset
```

--------------------------------

### Create custom layout for media library

Source: https://whitecube.github.io/nova-flexible-content

Custom layouts must implement HasMedia and use the HasMediaLibrary trait to enable media fields.

```php
use Spatie\MediaLibrary\HasMedia;
use Whitecube\NovaFlexibleContent\Layouts\Layout;
use Ebess\AdvancedNovaMediaLibrary\Fields\Images;
use Whitecube\NovaFlexibleContent\Concerns\HasMediaLibrary;

class SliderLayout extends Layout implements HasMedia
{
    use HasMediaLibrary;

    protected $name = 'sliderlayout';
    protected $title = 'SliderLayout';

    public function fields()
    {
        return [
            Images::make('Images', 'images')
        ];
    }

}
```

--------------------------------

### Create a Custom Flexible Cast

Source: https://whitecube.github.io/nova-flexible-content

Extend the default FlexibleCast to map specific keys to custom layout classes. This allows for more structured handling of different flexible content layouts.

```php
namespace App\Casts;

class MyFlexibleCast extends FlexibleCast
{
    protected $layouts = [
        'wysiwyg' => \App\Nova\Flexible\Layouts\WysiwygLayout::class,
        'video' => \App\Nova\Flexible\Layouts\VideoLayout::class,
    ];
}
```

--------------------------------

### Generate Resolver via Artisan

Source: https://whitecube.github.io/nova-flexible-content

Use the artisan command to scaffold a new resolver class for custom data storage.

```bash
php artisan flexible:resolver {classname?}

// Ex: php artisan flexible:resolver WysiwygPageResolver
```

--------------------------------

### Define a Preset Class

Source: https://whitecube.github.io/nova-flexible-content

Create a Preset class to encapsulate complex Flexible field configurations and dynamic layouts.

```php
namespace App\Nova\Flexible\Presets;

use App\PageBlocks;
use Whitecube\NovaFlexibleContent\Flexible;
use Whitecube\NovaFlexibleContent\Layouts\Preset;

class WysiwygPagePreset extends Preset
{

    /**
     * The available blocks
     *
     * @var Illuminate\Support\Collection
     */
    protected $blocks;

    /**
     * Create a new preset instance
     *
     * @return void
     */
    public function __construct()
    {
        $this->blocks = PageBlocks::orderBy('label')->get();
    }

    /**
     * Execute the preset configuration
     *
     * @return void
     */
    public function handle(Flexible $field)
    {
        $field->button('Add new block');
        $field->resolver(\App\Nova\Flexible\Resolvers\WysiwygPageResolver::class);
        $field->help('Go to the "<strong>Page blocks</strong>" Resource in order to add new WYSIWYG block types.');

        $this->blocks->each(function($block) use ($field) {
            $field->addLayout($block->title, $block->id, $block->getLayoutFields());
        });
    }
}
```

--------------------------------

### Configure Post model for media library

Source: https://whitecube.github.io/nova-flexible-content

The parent model must implement HasMedia and use the InteractsWithMedia trait to support media library integration.

```php
use Spatie\MediaLibrary\HasMedia;
use Illuminate\Database\Eloquent\Model;
use Spatie\MediaLibrary\InteractsWithMedia;
use Whitecube\NovaFlexibleContent\Concerns\HasFlexible;

class Post extends Model implements HasMedia
{
    use HasFlexible;
    use InteractsWithMedia;
}
```

--------------------------------

### Define a Custom Layout Class

Source: https://whitecube.github.io/nova-flexible-content

Create a reusable layout by extending the Layout class and defining its fields.

```php
namespace App\Nova\Flexible\Layouts;

use Laravel\Nova\Fields\Text;
use Laravel\Nova\Fields\Markdown;
use Whitecube\NovaFlexibleContent\Layouts\Layout;

class SimpleWysiwygLayout extends Layout
{
    /**
     * The layout's unique identifier
     *
     * @var string
     */
    protected $name = 'wysiwyg';

    /**
     * The displayed title
     *
     * @var string
     */
    protected $title = 'Simple content section';

    /**
     * Get the fields displayed by the layout.
     *
     * @return array
     */
    public function fields()
    {
        return [
            Text::make('Title'),
            Markdown::make('Content')
        ];
    }
}
```

--------------------------------

### Apply a Preset to a Field

Source: https://whitecube.github.io/nova-flexible-content

Reference the preset class within the Flexible field definition.

```php
Flexible::make('Content')
    ->preset(\App\Nova\Flexible\Presets\WysiwygPagePreset::class);
```

--------------------------------

### Register a Custom Layout

Source: https://whitecube.github.io/nova-flexible-content

Use the class name to add the custom layout to a Flexible field.

```php
Flexible::make('Content')
    ->addLayout(\App\Nova\Flexible\Layouts\SimpleWysiwygLayout::class);
```

--------------------------------

### Implement custom field persistence

Source: https://whitecube.github.io/nova-flexible-content

The set method saves Flexible content to a storage location, such as a database table, for later retrieval.

```php
/**
 * Set the field's value
 *
 * @param  mixed  $model
 * @param  string $attribute
 * @param  \Illuminate\Support\Collection $groups
 * @return void
 */
public function set($model, $attribute, $groups)
{
    $class = get_class($model);

    $class::saved(function ($model) use ($groups) {
        $blocks = $groups->map(function($group, $index) {
            return [
                'name' => $group->name(),
                'value' => json_encode($group->getAttributes()),
                'order' => $index
            ];
        });

        // This is a quick & dirty example, syncing the models is probably a better idea.
        $model->blocks()->delete();
        $model->blocks()->createMany($blocks);
    });
}
```

--------------------------------

### Limit Layout Instances

Source: https://whitecube.github.io/nova-flexible-content

Restrict the number of times a specific layout can be added by setting the $limit property.

```php
/**
 * The maximum amount of this layout type that can be added
 */
protected $limit = 1;
```

--------------------------------

### Customize Layout Selection Menu

Source: https://whitecube.github.io/nova-flexible-content

Change the component used for selecting layouts. Options include 'flexible-drop-menu' (default) and 'flexible-search-menu'. Custom components can also be used.

```php
// Default, simple list of all layouts
Flexible::make('Content')->menu('flexible-drop-menu');

// searchable select field
Flexible::make('Content')->menu('flexible-search-menu');

// customized searchable select field
Flexible::make('Content')
    ->menu(
        'flexible-search-menu',
        [
            'selectLabel' => 'Press enter to select',
            // the property on the layout entry
            'label' => 'title',
            // 'top', 'bottom', 'auto'
            'openDirection' => 'bottom',
        ]
    );
```

--------------------------------

### Enable Layout Removal Confirmation

Source: https://whitecube.github.io/nova-flexible-content

Add a confirmation prompt before a layout is deleted. You can also customize the confirmation dialog's button labels.

```php
Flexible::make('Content')->confirmRemove();

// You can override the text as well
Flexible::make('Content')->confirmRemove($label = '', $yes = 'Delete', $no = 'Cancel');
```

--------------------------------

### Limit Number of Layouts

Source: https://whitecube.github.io/nova-flexible-content

Restrict the maximum number of layouts that can be added to the Flexible field. Defaults to 1 if no integer is provided.

```php
Flexible::make('Content')->limit(2);
```

--------------------------------

### Add Layouts to Flexible Field

Source: https://whitecube.github.io/nova-flexible-content

Define repeatable groups of fields within the Flexible field. Use this to structure content with different types of sections.

```php
use Whitecube\NovaFlexibleContent\Flexible;

// ...

Flexible::make('Content')
    ->addLayout('Simple content section', 'wysiwyg', [
        Text::make('Title'),
        Markdown::make('Content')
    ])
    ->addLayout('Video section', 'video', [
        Text::make('Title'),
        Image::make('Video Thumbnail', 'thumbnail'),
        Text::make('Video ID (YouTube)', 'video'),
        Text::make('Video Caption', 'caption')
    ])
```

--------------------------------

### Customize Add Layout Button Label

Source: https://whitecube.github.io/nova-flexible-content

Change the default text of the button used to add new layouts. This can be used for more descriptive or branded button text.

```php
Flexible::make('Content')
    ->button('Add something amazing!');
```

--------------------------------

### Specify Layout Mappings with HasFlexible Trait

Source: https://whitecube.github.io/nova-flexible-content

When using the HasFlexible trait, you can provide an array of layout mappings as the second argument to the flexible() method to map keys to custom layout classes.

```php
public function getFlexibleContentAttribute()
{
    return $this->flexible('flexible-content', [
        'wysiwyg' => \App\Nova\Flexible\Layouts\WysiwygLayout::class,
        'video' => \App\Nova\Flexible\Layouts\VideoLayout::class,
    ]);
}
```

--------------------------------

### Cast Flexible Content with FlexibleCast

Source: https://whitecube.github.io/nova-flexible-content

Use the FlexibleCast class to automatically parse JSON string values from the flexible content field into usable objects. This is typically defined in your Eloquent model's $casts property.

```php
namespace App;

use Illuminate\Database\Eloquent\Model;
use Whitecube\NovaFlexibleContent\Value\FlexibleCast;

class MyModel extends Model
{
    protected $casts = [
        'flexible-content' => FlexibleCast::class
    ];
}
```

--------------------------------

### Override Layout Mappings in Custom Cast

Source: https://whitecube.github.io/nova-flexible-content

Override the getLayoutMappings method in your custom flexible cast to programmatically define layout mappings, allowing for conditional or complex mapping logic.

```php
namespace App\Casts;

class MyFlexibleCast extends FlexibleCast
{
    protected function getLayoutMappings()
    {
        $mappings = [];
        
        // Conditionally add mappings however you want
        
        return $mappings;
    }
}
```

--------------------------------

### Make Flexible Field Full Width

Source: https://whitecube.github.io/nova-flexible-content

Configure the Flexible field to occupy the full width of the form. This also moves the field's label above the input area.

```php
Flexible::make('Content')
    ->fullWidth()
```

--------------------------------

### Use HasFlexible Trait for Flexible Content

Source: https://whitecube.github.io/nova-flexible-content

Implement the HasFlexible trait in your Eloquent model to easily access flexible content attributes using the flexible() method. This method transforms the attribute's value into a Collection of layouts.

```php
namespace App;

use Illuminate\Database\Eloquent\Model;
use Whitecube\NovaFlexibleContent\Concerns\HasFlexible;

class MyModel extends Model
{
    use HasFlexible;

    public function getFlexibleContentAttribute()
    {
        return $this->flexible('flexible-content');
    }
}
```

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