BookStack/app/Providers/AppServiceProvider.php

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<?php namespace BookStack\Providers;
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use Blade;
use BookStack\Entities\Book;
use BookStack\Entities\Bookshelf;
use BookStack\Entities\Chapter;
use BookStack\Entities\Page;
use BookStack\Settings\Setting;
use BookStack\Settings\SettingService;
use Illuminate\Database\Eloquent\Relations\Relation;
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use Illuminate\Support\ServiceProvider;
use Schema;
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use Validator;
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class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
{
// Custom validation methods
Validator::extend('is_image', function ($attribute, $value, $parameters, $validator) {
$imageMimes = ['image/png', 'image/bmp', 'image/gif', 'image/jpeg', 'image/jpg', 'image/tiff', 'image/webp'];
return in_array($value->getMimeType(), $imageMimes);
});
// Custom blade view directives
Blade::directive('icon', function ($expression) {
return "<?php echo icon($expression); ?>";
});
// Allow longer string lengths after upgrade to utf8mb4
Schema::defaultStringLength(191);
// Set morph-map due to namespace changes
Relation::morphMap([
'BookStack\\Bookshelf' => Bookshelf::class,
'BookStack\\Book' => Book::class,
'BookStack\\Chapter' => Chapter::class,
'BookStack\\Page' => Page::class,
]);
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}
/**
* Register any application services.
*
* @return void
*/
public function register()
{
$this->app->singleton(SettingService::class, function ($app) {
return new SettingService($app->make(Setting::class), $app->make('Illuminate\Contracts\Cache\Repository'));
});
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}
}