Allow updating slug and only set it when not saved yet

Author: Baspa

src/Filament/RelationManagers/FieldsRelationManager.php

@@ -43,10 +43,19 @@ public function form(Form $form): Form
                                     ->required()
                                     ->placeholder(__('Name'))
                                     ->live(onBlur: true)
-                                    ->afterStateUpdated(fn (Set $set, ?string $state) => $set('slug', Str::slug($state))),
+                                    ->afterStateUpdated(function (Set $set, Get $get, ?string $state, ?string $old, ?Field $record) {
+                                        if (! $record || blank($get('slug'))) {
+                                            $set('slug', Str::slug($state));
+                                        }
+
+                                        $currentSlug = $get('slug');
+
+                                        if (! $record?->slug && (! $currentSlug || $currentSlug === Str::slug($old))) {
+                                            $set('slug', Str::slug($state));
+                                        }
+                                    }),
 
-                                TextInput::make('slug')
-                                    ->readonly(),
+                                TextInput::make('slug'),
 
                                 Select::make('field_type')
                                     ->searchable()
@@ -60,8 +69,8 @@ public function form(Form $form): Form
                                             ...FieldEnum::array(),
                                             ...$this->prepareCustomFieldOptions(Fields::getFields()),
                                         ])
-                                            ->sortBy(fn ($value) => $value)
-                                            ->mapWithKeys(fn ($value, $key) => [
+                                            ->sortBy(fn($value) => $value)
+                                            ->mapWithKeys(fn($value, $key) => [
                                                 $key => Str::headline($value),
                                             ])
                                             ->toArray();
@@ -79,10 +88,10 @@ public function form(Form $form): Form
                             ]),
                         Section::make('Configuration')
                             ->columns(3)
-                            ->schema(fn (Get $get) => $this->getFieldTypeFormSchema(
+                            ->schema(fn(Get $get) => $this->getFieldTypeFormSchema(
                                 $get('field_type')
                             ))
-                            ->visible(fn (Get $get) => filled($get('field_type'))),
+                            ->visible(fn(Get $get) => filled($get('field_type'))),
                     ]),
             ]);
     }
@@ -181,8 +190,8 @@ public function table(Table $table): Table
                     ->after(function (Component $livewire, array $data, Model $record, array $arguments) {
                         if (
                             isset($record->valueColumn) && $this->ownerRecord->getConnection()
-                                ->getSchemaBuilder()
-                                ->hasColumn($this->ownerRecord->getTable(), $record->valueColumn)
+                            ->getSchemaBuilder()
+                            ->hasColumn($this->ownerRecord->getTable(), $record->valueColumn)
                         ) {
 
                             $key = $this->ownerRecord->getKeyName() ?? 'id';