Initial commit

app/Models/ChartOfAccount.php

@@ -0,0 +1,84 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class ChartOfAccount extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'account_code',
+        'account_name_zh',
+        'account_name_en',
+        'account_type',
+        'category',
+        'parent_account_id',
+        'is_active',
+        'display_order',
+        'description',
+    ];
+
+    protected $casts = [
+        'is_active' => 'boolean',
+        'display_order' => 'integer',
+    ];
+
+    // Relationships
+
+    public function parentAccount(): BelongsTo
+    {
+        return $this->belongsTo(ChartOfAccount::class, 'parent_account_id');
+    }
+
+    public function childAccounts(): HasMany
+    {
+        return $this->hasMany(ChartOfAccount::class, 'parent_account_id')->orderBy('display_order');
+    }
+
+    public function budgetItems(): HasMany
+    {
+        return $this->hasMany(BudgetItem::class);
+    }
+
+    public function transactions(): HasMany
+    {
+        return $this->hasMany(Transaction::class);
+    }
+
+    // Helper methods
+
+    public function getFullNameAttribute(): string
+    {
+        return "{$this->account_code} - {$this->account_name_zh}";
+    }
+
+    public function isIncome(): bool
+    {
+        return $this->account_type === 'income';
+    }
+
+    public function isExpense(): bool
+    {
+        return $this->account_type === 'expense';
+    }
+
+    public function isAsset(): bool
+    {
+        return $this->account_type === 'asset';
+    }
+
+    public function isLiability(): bool
+    {
+        return $this->account_type === 'liability';
+    }
+
+    public function isNetAsset(): bool
+    {
+        return $this->account_type === 'net_asset';
+    }
+}