补充亿点内容，顺便立Flag

app/Models/Programs.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Programs extends Model
+{
+    public function appends(): \Illuminate\Database\Eloquent\Relations\HasMany
+    {
+        return $this->hasMany(ProgramAppends::class, "program_id", "id")->orderByDesc("is_original");
+    }
+
+    public function tags(): \Illuminate\Database\Eloquent\Relations\HasManyThrough
+    {
+        return $this->hasManyThrough(Tags::class, ProgramTags::class, "program_id", "id", "id", "tag_id");
+    }
+
+    public function video_pivots(): \Illuminate\Database\Eloquent\Relations\HasMany
+    {
+        return $this->hasMany(ProgramVideos::class, "program_id", "id");
+    }
+
+    public function videos(): \Illuminate\Database\Eloquent\Relations\HasManyThrough
+    {
+        return $this->hasManyThrough(Videos::class, ProgramVideos::class, "program_id", "bvid", "id", "video_bvid");
+    }
+}