M1: 数据模型 + sablog:import 脚本（MySQL 8 验证通过，不迁移 trackback 等过时功能）

app/Models/Post.php

@@ -0,0 +1,111 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Spatie\MediaLibrary\HasMedia;
+use Spatie\MediaLibrary\InteractsWithMedia;
+use Spatie\MediaLibrary\MediaCollections\Models\Media;
+use Spatie\Tags\HasTags;
+
+class Post extends Model implements HasMedia
+{
+    use HasFactory;
+    use InteractsWithMedia;
+    use HasTags;
+
+    protected $fillable = [
+        'category_id',
+        'user_id',
+        'title',
+        'slug',
+        'excerpt',
+        'content',
+        'keywords',
+        'status',
+        'is_sticky',
+        'close_comment',
+        'read_password',
+        'views',
+        'comment_count',
+        'meta',
+        'published_at',
+    ];
+
+    protected $casts = [
+        'meta' => 'array',
+        'is_sticky' => 'boolean',
+        'close_comment' => 'boolean',
+        'published_at' => 'datetime',
+    ];
+
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(Category::class);
+    }
+
+    public function author(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+
+    public function comments(): HasMany
+    {
+        return $this->hasMany(Comment::class);
+    }
+
+    public function scopePublished(Builder $query): Builder
+    {
+        return $query->where('status', 'published')
+            ->whereNotNull('published_at')
+            ->where('published_at', '<=', now());
+    }
+
+    public function scopeSearch(Builder $query, ?string $keyword): Builder
+    {
+        if (! $keyword) {
+            return $query;
+        }
+
+        return $query->where(function (Builder $q) use ($keyword) {
+            $q->where('title', 'like', "%{$keyword}%")
+                ->orWhere('content', 'like', "%{$keyword}%")
+                ->orWhere('excerpt', 'like', "%{$keyword}%")
+                ->orWhere('keywords', 'like', "%{$keyword}%");
+        });
+    }
+
+    public function registerMediaCollections(): void
+    {
+        $this->addMediaCollection('attachments')->useDisk(\App\Support\MediaDisk::name());
+    }
+
+    public function registerMediaConversions(?Media $media = null): void
+    {
+        $this->addMediaConversion('thumb')
+            ->width(500)
+            ->height(500)
+            ->performOnCollections('attachments');
+    }
+
+    public function getUrlAttribute(): string
+    {
+        return route('posts.show', $this->slug ?? $this->id);
+    }
+
+    public function getExcerptOrFallbackAttribute(): string
+    {
+        if ($this->excerpt) {
+            return $this->excerpt;
+        }
+
+        $text = strip_tags($this->content);
+        $text = preg_replace('/\[[^\]]*\]/', '', $text);
+
+        return mb_substr($text, 0, 200);
+    }
+}