added attchments

app/Models/Attachment.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+/**
+ * @property int $id
+ * @property int|null $thread_id
+ * @property int|null $post_id
+ * @property int|null $attachment_extension_id
+ * @property int|null $attachment_group_id
+ * @property int|null $user_id
+ * @property string $disk
+ * @property string $path
+ * @property string $original_name
+ * @property string|null $extension
+ * @property string $mime_type
+ * @property int $size_bytes
+ * @mixin \Eloquent
+ */
+class Attachment extends Model
+{
+    use SoftDeletes;
+
+    protected $fillable = [
+        'thread_id',
+        'post_id',
+        'attachment_extension_id',
+        'attachment_group_id',
+        'user_id',
+        'disk',
+        'path',
+        'original_name',
+        'extension',
+        'mime_type',
+        'size_bytes',
+    ];
+
+    protected $casts = [
+        'size_bytes' => 'int',
+    ];
+
+    public function thread(): BelongsTo
+    {
+        return $this->belongsTo(Thread::class);
+    }
+
+    public function post(): BelongsTo
+    {
+        return $this->belongsTo(Post::class);
+    }
+
+    public function extension(): BelongsTo
+    {
+        return $this->belongsTo(AttachmentExtension::class, 'attachment_extension_id');
+    }
+
+    public function group(): BelongsTo
+    {
+        return $this->belongsTo(AttachmentGroup::class, 'attachment_group_id');
+    }
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+}