Update default post status to published and enforce unique group names

app/Filament/Resources/EducationalGroupResource.php

@@ -40,6 +40,7 @@ class EducationalGroupResource extends Resource
                                     ->required()
                                     ->maxLength(50)
                                     ->placeholder('Например: ИВТ-21-1')
+                                    ->unique()
                                     ->helperText('Введите краткое название группы в принятом формате'),
 
                                 Select::make('faculty_id')

app/Filament/Resources/SliderResource/RelationManagers/SlidesRelationManager.php

@@ -96,7 +96,7 @@ class SlidesRelationManager extends RelationManager
                                     })
                                     ->options(function (Forms\Get $get) {
                                         if ($get('model_select') === 'Post') {
-                                            return Post::where('status', 'published')->pluck('title', 'id');
+                                            return Post::where('status', 'published')->orderBy('created_at', 'desc')->pluck('title', 'id');
                                         }
                                         if ($get('model_select') === 'Page') {
                                             return Page::whereNotNull('title')->pluck('title', 'id');