first commit

app/Models/Course.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Concerns\HasUuids;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Course extends Model
+{
+    use HasFactory, HasUuids, SoftDeletes;
+
+    protected $guarded = [];
+
+    protected $casts = [
+        'metadata' => 'array',
+        'is_published' => 'boolean',
+        'price' => 'decimal:2',
+    ];
+
+    public function level(): BelongsTo
+    {
+        return $this->belongsTo(Level::class);
+    }
+
+    public function enrollments(): HasMany
+    {
+        return $this->hasMany(Enrollment::class);
+    }
+
+    public function modules(): HasMany
+    {
+        return $this->hasMany(Module::class)->orderBy('order_index');
+    }
+
+    public function teacher(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'teacher_id');
+    }
+}