chore: initial commit of existing codebase

app/Models/PurchaseRequest.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PurchaseRequest extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'request_number', 'date', 'project_name', 'department',
+        'requested_by_name', 'required_date_text', 'location',
+        'remarks', 'status', 'stage', 'verified_by_name',
+        'requested_by', 'approved_by', 'approved_at',
+    ];
+
+    protected $casts = [
+        'date'        => 'date',
+        'approved_at' => 'datetime',
+    ];
+
+    public function items()
+    {
+        return $this->hasMany(PurchaseRequestItem::class);
+    }
+
+    public function requestedBy()
+    {
+        return $this->belongsTo(User::class, 'requested_by');
+    }
+
+    public function approvedBy()
+    {
+        return $this->belongsTo(User::class, 'approved_by');
+    }
+
+    public function purchaseOrders()
+    {
+        return $this->hasMany(PurchaseOrder::class);
+    }
+
+    public function signature()
+    {
+        return $this->hasOne(PurchaseSignature::class);
+    }
+
+    public function rfqInvitations()
+    {
+        return $this->hasMany(RfqInvitation::class);
+    }
+
+    public function supplierQuotes()
+    {
+        return $this->hasMany(SupplierQuote::class);
+    }
+
+    public function awardedQuote()
+    {
+        return $this->hasOne(SupplierQuote::class)->where('is_awarded', true);
+    }
+}