upgrade to filament v4

app/Filament/Resources/Branches/RelationManagers/AccountsRelationManager.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace App\Filament\Resources\BranchResource\RelationManagers;
+
+use App\Models\Account;
+use Filament\Forms;
+use Filament\Forms\Form;
+use Filament\Resources\RelationManagers\RelationManager;
+use Filament\Tables;
+use Filament\Tables\Table;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+class AccountsRelationManager extends RelationManager
+{
+    protected static string $relationship = 'accounts';
+
+    public function getTableQuery(): Builder|Relation|null
+    {
+        return Account::query()->whereHas('balances', function (Builder $query) {
+            $query->where('branch_id', $this->getOwnerRecord()->id);
+        });
+    }
+
+    public function form(Form $form): Form
+    {
+        return $form
+            ->schema([
+                Forms\Components\TextInput::make('branch_id')
+                    ->required()
+                    ->maxLength(255),
+            ]);
+    }
+
+    public function table(Table $table): Table
+    {
+        return $table
+            ->recordTitleAttribute('branch_id')
+            ->columns([
+                Tables\Columns\TextColumn::make('account'),
+                Tables\Columns\TextColumn::make('branch_id'),
+                Tables\Columns\TextColumn::make('normal_balance'),
+                Tables\Columns\TextColumn::make('starting_balance'),
+                Tables\Columns\TextColumn::make('current_balance'),
+            ])
+            ->filters([
+                //
+            ])
+            ->headerActions([
+                Tables\Actions\CreateAction::make(),
+            ])
+            ->actions([
+                Tables\Actions\EditAction::make(),
+                Tables\Actions\DeleteAction::make(),
+            ])
+            ->bulkActions([
+                Tables\Actions\BulkActionGroup::make([
+                    Tables\Actions\DeleteBulkAction::make(),
+                ]),
+            ]);
+    }
+}