first commit

app/Models/SubmissionStatusHistory.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class SubmissionStatusHistory extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'submission_id',
+        'from_status',
+        'to_status',
+        'changed_by',
+        'notes',
+    ];
+
+    public function submission(): BelongsTo
+    {
+        return $this->belongsTo(Submission::class);
+    }
+
+    public function changedBy(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'changed_by');
+    }
+}