first commit

app/Models/Contract.php

@@ -0,0 +1,29 @@
+<?php
+namespace App\Models;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Contract extends Model
+{
+    use SoftDeletes;
+    protected $fillable = ['unit_id', 'person_id', 'contract_type', 'contract_number', 'ejari_no', 'start_date', 'end_date', 'duration_months', 'total_amount', 'status', 'notes'];
+    protected $casts = ['start_date' => 'date', 'end_date' => 'date'];
+    
+    public function unit() { return $this->belongsTo(Unit::class); }
+    public function subunits() { return $this->belongsToMany(Subunit::class, 'contract_subunits'); }
+    public function payments() { return $this->hasMany(Payment::class); }
+    
+    public function person()
+    {
+        return $this->contract_type === 'owner' 
+            ? $this->belongsTo(Owner::class, 'person_id')
+            : $this->belongsTo(Tenant::class, 'person_id');
+    }
+    
+    protected static function boot()
+    {
+        parent::boot();
+        static::creating(fn($model) => $model->created_by = auth()->id());
+        static::updating(fn($model) => $model->updated_by = auth()->id());
+    }
+}